Re: Problems with my Johnson outboard « Reply #8 on: June 06, 2011, 07:23:49 PM » YES PLEASE LET US KNOW AS IM HAVEING THE SAME PROBLEM. I'm trying to help out a friend that has a 2000 225 optimax that has an intermittent problem. A fuel pump emergency can be stopped by paying attention to the temperature. However, they are pretty certain it is a fuel issue. Replace throtle cable mercury 50 hp outboard bleed a Mercruiser trim pump mercury 25hp 2 stroke manual float height for mercury 60 outboard tohatsu ignition problems. Twist your throttle position wide open with one hand. TROUBLESHOOTING ENGINE. Outboard Motor problem- Fuel Pump? The WoodenBoat Forum is sponsored by WoodenBoat Publications , publisher of WoodenBoat magazine. They pull my boat in right away and start testing. Then I would say you have a faulty fuel pump. fuel pump retaining nut threads; possible fire/explosion if ignition source present … 225/250 HP Mercury/Mariner. If like I said the fuel pump is up stream of that fuel filter. Check your fuel filter to make sure it’s not clogged and restricting flow. The fuel pump pumps enough fuel when the engine is turning up to negate that little bit of air but at idle, it makes a lot of difference. Note: Never mount an electric fuel pump in an enclosed area such as the trunk or interior space Ok, so how do I do it right? The easiest way is to use an oil pressure switch. Lubrication. Browse our daily deals for even more savings! Free delivery and free returns on eBay Plus items!. Each of these has a simple fix, and owners may be able to repair their own boats without seeking the advice or skills of a boat mechanic. idle and low speed - Answered by a verified Marine Mechanic We use cookies to give you the best possible experience on our website. Shop right now. The spark plug should be inspected for cracks or chips. They can answer questions for any Yamaha outboard model or horsepower. ( We do not service Diesel Fuel Injectors ) Improve your fuel economy, starting, idle, top end and total performance. Replace pulse hose. Find Fuel Pump Diaphragm Kit - 857005A1 here. That is what the factory sends with them. Worn out check valve(s) in fuel pump. Carter universal rotary vane electric fuel pumps operate using leaded and unleaded gasoline, gasohol, and fuel boosters. I Have Water in My Fuel Your are not alone. Check the fuel pump pressure. Boat Fuel Systems. High fuel pressure results in a rich air fuel ratio, because the increase in pressure forces more fuel through the injectors than required. This is to test that the fuel pump(s) are pulling adequate vacuum. :icon_bs: Yesterday after some initial diagnosis I water tested the boat and it does not need a powerhead. Check your fuel filter to make sure it's not clogged and restricting flow. Re: Problems with my Johnson outboard « Reply #8 on: June 06, 2011, 07:23:49 PM » YES PLEASE LET US KNOW AS IM HAVEING THE SAME PROBLEM. sometimes misfires/backfires when having these other symptomsYour fuel pump. I know many people who have the symptoms of:boat hesitates when you gun it. I know this fuel/vapor separator I'm sure has run dry. Fuel system problems The most likely problems to beset older two-stroke outboard engines are with the fuel system. Here you will find diagrams for Mercruiser parts and Mercury outboard parts including Mariner, Chrysler and Force outboards. Inlet valve Outlet valve The pump diaphragm,omitted here for clarity, fitsunder the brass centre cupand its outer edge is heldbetween the two halves ofthe body. See the difference that we provide to every customer. Ask the experts on our Mercury Outboard Parts Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. (Actually , it was more like engine fuel flooding by air starvation was going on). One typical example of a restricted fuel filter is a vehicle that cuts out or loses power driving up an incline, such as a bridge. Mercury Outboard Motors - Online Shop/Service/Repair Manuals Download 1984-1986 Mercury Force 4HP Outboards Service Manual Original Mercury Service manual covers the following Mercury Force models: 4HP Manual part number: OB4126 Manual good through 5HP 1988 Model (except for fuel pump and Tiller Handle on 1988 "B" Models). Somewhere between the engine and the fuel tank. It will turn back on a run as the high pressure pump draws on the fuel system. This listing is for a brand new high pressure fuel pump with a 12 month Warranty (part only). Quantum EFI Outboard Fuel Pump Mercury Marine 40HP FourStroke 2002-2006, Replaces Mercury Marine 898101T67, 892267A51 Description: HFP replacement fuel pumps, modules, assemblies, and kit components are designed to meet or exceed OEM specifications, and feature upgrades that improve on the OEM design. 6 Carburetor Set complete with throttle bodies: Late Style V6 Looper (93-up) 200HP with adjustable low speed air screw for improved idle. Sure signs that there is a fuel or fuel filter problem include a loss of pressure in the fuel pump that leads to loss of power or the inability to start the engine. Outboard fuel pump rebuild - Duration: 17:08. Outboard Motor problem- Fuel Pump? The WoodenBoat Forum is sponsored by WoodenBoat Publications , publisher of WoodenBoat magazine. Keeping your MERCURY Mariner fuel system properly maintained is vital to your vehicle’s performance and fuel efficiency. For use with Mercruiser Injector 805225A1 on various GM V-8 350, 377, 454, 502 MPI applications. That's also a problem, but won't produce the symptoms we had of an engine losing RPMs and dying. There are three main types of fuel pumps – mechanical pumps, in-tank electric pumps, and external electric pumps. Overheating Mercury Outboard 30 hp EFI Overheating - Boating question. Your outboard stator is the "powerhouse" of your outboards ignition system. If the fuse is blown, it will be broken or burned. Quantum EFI Outboard Fuel Pump Mercury Marine 40HP FourStroke 2002-2006, Replaces Mercury Marine 898101T67, 892267A51 Description: HFP replacement fuel pumps, modules, assemblies, and kit components are designed to meet or exceed OEM specifications, and feature upgrades that improve on the OEM design. The other end of the lever, which is linked loosely to a rubber diaphragm forming the floor of a chamber in the pump, goes down and pulls the diaphragm with it. 2004 Mercury/Yamaha 4-stoke EFI 115hp EXLPT OT812944 1950hrs. Have Bennington 2013 GCW tritoon w/ Mercury 150hp 4 stroke outboard (#150L 4S)motor. Happened 3 times so far, each time was a run on the boat for at least 35-75 minutes, then anchored/stopped drifting for at least 30, after which, boat would crank perfectly, but not restart. Look for plugged filter or clogged lines, bad pump, stuck needle & seat, and fuel pressure. *****UPDATE***** Dropped the boat off at Bass Pro Shop again this morning. Occasionally, the motor will quit altogether and will not re-start. Do not put any fuel containing more than 10% ethanol (E10) in your boat’s fuel tank or outboard motor (EPA’s decision only applies to 2007 and newer highway vehicles), unless your owner’s manual specifically states otherwise. • Mercury MerCruiser's maximum engine fuel temperature specification that became effective January 1, 1996 is: Under the hottest outside air temperature condition that the boat will be. I think I can hear the fuel pump making noise inside the tank. When it's running it runs great, no missing or anything. Pressure Sensor Included: Without Pressure Sensor. With gauges inserted (using Tee fittings) and some clear hose, it is then just a matter of operating the motor at maximum fuel flow (wide open throttle) and note the. Fuel Injector Problems. I then pumped gas but instead was just getting only air. When your Evinrude needs an overhaul, some to Wholesale Marine for Evinrude fuel pumps, filters, and components. Under load, fuel demand increases and a clogged fuel filter reduces the needed flow. How to Compression Test on Mercury 2-Stroke Outboard Engine November 17, 2016 Repair Manual Do-It-Yourself Outboard Repair Guides 2 Its highly recommended to always use a outboard repair manual for your specific year and model outboard engine when preforming a cylinder compression test on your motor. One-way check valves are located on the inlet and outlet side of the primer bulb. Here are the best and quickest ways to troubleshoot and resolve this issue! What Are The Symptoms of An Air Leak?. How To Tell If A Fuel Pump Is Bad. Offering discount prices on OEM Mercury Marine parts for over 50 years. They provide voltage to your switchbox or CDM's. 9-135 HP Repair and Service Manual. This part is commonly referred to as the MAP sensor. These lines allow oil to pass through the pump and to the top and bottom crank bearings. The fuel pump is the prime suspect, and if that check valve isn't closing reliably it needs replacing. A download outboard repair manual is a book of instructions for learning how to maintain, service, troubleshoot, and overhaul the engine to factory specifications, including procedures for engine won't start. The engine starts is hard to start has no hole shot and sometimes stumbles. Things that have been suggested from bar stool Merc techs: fuel filter, fuel pump, fuel line/primer ball. Troubleshooting Ignition Problems on a Mercury Outboard By Cleveland Van Cecil ; Updated April 12, 2017 Mercury Marine is an international motor boat company based in Lake Forest, Illinois, providing motors for private, commercial and government craft. This is very bad for use in marine fuel. Mercury sends these things out with the oil pump set rich to protect the engine in case some of us dummies don't use 50-1 oil ratio in addition to the oil injection during break in. Exterior Features; Bodyside/Cab Step or Running Board: Option; Bumper Step Up: Standard; Front Air Dam: Standard; Metallic Paint: Standard; Power Sliding Side Van Door: N/A; Power. Affordable Fuel Injection (AFI) was founded in 1997 with one goal in mind: offer fuel injection systems that allow superior performance to traditional carburetor systems, for a variety of applications, and make it affordable. Stop browsing in the dark. We know car parts and we know auto parts. Things that have been suggested from bar stool Merc techs: fuel filter, fuel pump, fuel line/primer ball. This is a sure sign that the fuel pump can’t supply the fuel fast enough to keep up. If you will be storing your engine for an extended period a fuel stabilizer should also be used. The average cost for a Mercury Mariner fuel pump replacement is between $396 and $761. The outboard fuel pump has a sensitive diaphragm that receives a suction signal from a piston cylinder so the pump can deliver fuel. just before the fuel pump, some clear hose also at the fuel pump inlet and a pressure gauge at fuel pump outlet. Also, I doubt very seriously you have a reed problem!. 6 Carburetor Set complete with throttle bodies: Late Style V6 Looper (93-up) 200HP with adjustable low speed air screw for improved idle. It acts like it's running out of fuel and dies, then I squeeze the bulb and it's fine. The fuel pump pumps enough fuel when the engine is turning up to negate that little bit of air but at idle, it makes a lot of difference. 40 years ago and running 2 stroke outboards, my dad trained me to run up to WOT, and then pull back to about 3/4 to 4/5ths throttle which he called 'cruising speed'. #3 Excessive fuel pump pressure: Avoid extremes in fuel pressure. When putting in an aftermarket fuel pump or looking to get more fuel out of your factory pump, one mod worth doing is re-wiring that fuel pump. Hey guys, questions for you outboard wizards regarding low pressure fuel pumps Here's the situation: ran down to the rockpile yesterday (1 YT in boat, 1 released ), boat ran great on the way down. Relieve fuel system pressure. 5 Symptoms of a Bad Fuel Pressure Sensor and Replacement Cost Last Updated October 28, 2019 by Kevin The fuel pressure sensor is responsible for analyzing the pressure of the fuel that is inside the rail of the fuel pump assembly. Check your fuel filter to make sure it's not clogged and restricting flow. Your problem doesn't lie in the boat other than delivering the proper amount of fuel to the outboard. Your browser does not support frames. The fuel line itself over years. Fuel system problems The most likely problems to beset older two-stroke outboard engines are with the fuel system. This listing is for a brand new high pressure fuel pump with a 12 month Warranty (part only). Engine Related Parts. I can think of a few drying agents you could use to remove the water from your fuel, but you would need to remove the fuel from the tank to treat it. Keep Learning. TROUBLESHOOTING ENGINE. Most mechanical fuel pumps have a weep hole on the bottom of the unit. The fuel line on one motor is two years old the motor that is not working correctly has the original. Talking to a Mercury mechanic about how to run it, he also said it was designed to run full throttle much of the time. Check the fuel pump pressure. Rebuild fuel pump. Or, the fuel tank might be empty (don’t believe what the gauge is telling you), or the fuel tank might contain contaminated fuel (water or too much alcohol) or the. Contributed By: Enginebasics. If I purge the fuel line to get the air out, I can restart the motor and it will run for another 15-20 minutes at idle, then will die again. 5 - 40 HP outboard engines and electric motors: Fuel System: Fuel pump. While most drivers may never need to change their oil pump, it is important to know the symptoms in case you are experiencing problems with your vehicle. Purpose of the Rising Rate Regulator The Cartech regulators are designed specifically to add fuel to modified EFI engines (turbos, superchargers, and normally aspirated). It acts like it's running out of fuel and dies, then I squeeze the bulb and it's fine. 0 stalls when hot 1992 mercruiser 5. Common symptoms that indicate fuel injection pump problems requiring repair include difficulty or failure to start the engine, rough or noisy engine idling, lack of engine power, engine overheating, and high fuel or oil consumption. With the Mercury Fuel Care System, you can trust that you're using products that are specially formulated - by your engine's manufacturer - to help you get the most from your Mercury engine. Easy installation, outboard starts and runs normally on a garden hose. The pump could have gotten torn, or rolled up when inserting it, causing it to bind. I began to have a problem with fuel pressure last summer and now have had 4 new fuel pumps installed @ a dealer. The distance of fuel tank feom motor can have same effect causing the fuel pump to struggle pulling the weight of the fuel. What can that be? Can I fix it myself?. idle and low speed - Answered by a verified Marine Mechanic We use cookies to give you the best possible experience on our website. Then add a known quantity of mercury oil , and mark the new level. Engine problems are generally symptoms of something wrong in another system, such as ignition, fuel or starting. HFP # HFP-PPN10 - Genuine Mercury Mercruiser Outboard Low Pressure Fuel Pump Replaces Part Number 866170A01 - Fits various Mercury Marine outboard engines. Installing a dedicated voltage supply line for your fuel pump. That is what the factory sends with them. What can that be? Can I fix it myself?. Vapor lock is the bane of summer for boaters. Disconnect fuel lines from engine. FAILURE 2Injector filters become clogged. Engine has had its first 20hr service. A faulty or failing stator can cause one or more symptoms. Stop browsing in the dark. This Clymer DIY repair manual covers 1964-1971 Mercury 3. SKU#: 692-24410-00-00. A fuel injector is considered to be clogged if the amount of debris or gunk inside the injector or filter basket has built up to such an extent that it does not allow fuel to flow through. Mercury sends these things out with the oil pump set rich to protect the engine in case some of us dummies don't use 50-1 oil ratio in addition to the oil injection during break in. Fuel additives keep your fuel optimized, protect your fuel system, and remove any leftover deposits. The spark plug should be inspected for cracks or chips. Affordable Fuel Injection (AFI) was founded in 1997 with one goal in mind: offer fuel injection systems that allow superior performance to traditional carburetor systems, for a variety of applications, and make it affordable. Fits Mercury and Mariner motors that have the single pump in the VST tank. Was the vent on the tank accidently closed or is there a small air leak somewhere in the fuel hose and fittings. Secondly, check for loose connections at the hoses to make sure the pump is not sucking air. Check the fuel pump pressure. One sure way to prove pump malfunction is to manually pump the fuel to the carbs using the bulb on your gas hose, while the motor is running. The final filter is located above the electric fuel pump. The vacuum boost port makes it ideal for high-volume electric or mechanical fuel pumps of any kind where rock-steady pressure control is desired. Fuel temperature (at the engine's fuel inlet fitting) and the amount of vacuum required by the fuel pump to draw the fuel from the boat's fuel tank can contribute to vapor locking. ” It may still do that on it’s own,. A 25 only needs 5/16 and some 1/4. Turn off your fuel supply valve (if equipped). Boat Fuel Systems, Lines & Connectors How-Tos Connecting the Boat Fuel Line Assembly to the Gas Tank. I have Mercury 115 optimax with a fuel problem. Like the title says, 1999 50 HP Merc 2-stroke losing power at wide open throttle. Worn out check valve(s) in fuel pump. If you experience hard starts especially restarting a short period after shutting off the engine, then one possibility is a leaking fuel system. You are supposed to pinch off the fuel line between the tank and the vaccum gauge and it should pull between 3-5 inches of vaccuum within 10 seconds. Turn off your fuel supply valve (if equipped). The main factor driving this was emissions compliance and fuel economy standards but everything has improved because of it. It is snot over heating and it has a new water pump and new fuel filters. 5 In Stock - Ships Immediately. REMEMBER to always observe all applicable boating laws. Always check the ignition system first, if that's ok then the next suspect is the fuel filter. Early symptoms of carbon monoxide poisoning, which should not be confused with seasickness or intoxication, include headache, dizziness, drowsiness, and nausea. Stop browsing in the dark. Brucato Power provides the best Mercury ECU replacement and upgrade for Mercury EFI motors available! Stock or custom fuel curves on the Brucato ACU will get you back on the water for $1350. Was the vent on the tank accidently closed or is there a small air leak somewhere in the fuel hose and fittings. Weak Fuel Pump Symptoms; 8 Hp Mercury Outboard; Minn Kota Copilot Powerdrive V2; Belt Number Cross Reference; Mercury Propeller Chart; Timken Parts Catalog; Jet Ski Hose Attachment; Yamaha F60 Propeller; Honda Water Pressure; Us Marine Parts Bayliner; Mercury Oil And Gas; Marine Engine Room Insulation; Marine Cross. Mercruiser (Mercury Marine) Cool Fuel Module Defect Investigation. This item: Mercury OEM Fuel Pump Diaphram Kit 21-857005A1 $25. Usually, a bad or failing fuel pump will produce one or more of the following 8 symptoms that alert the driver of a potential issue. A motor needs fuel, air and spark in order to operate properly. As the fuel filter gets dirty, the fuel pump works much harder. Common Causes of Flooded Outboard Motors When an outboard boat motor "floods," it has too much fuel in the cylinder. or: Fuel Pump Mercury 25-60hp 4cyl 4 Stroke. The volume/ weight of the fuel is too great for the little fuel pump to pull. It is immediately in front of the motor mount. They have an internal pressure-regulating valve, and feature free-flow fuel delivery. When putting in an aftermarket fuel pump or looking to get more fuel out of your factory pump, one mod worth doing is re-wiring that fuel pump. Cumberland Watersports, Inc. The fuel lift pump is designed to lift fuel (vertically) about 60 in. When this part is broken, it cuts off the water supply to the engine and causes the engine to overheat. Pulse hole(s) plugged. I don't know if a pump overhaul kit includes the check valves. Mercury Tech: 200 EFI - bad fuel pump? If this is your first visit, be sure to check out the FAQ by clicking the link above. A mechanical fuel pump is driven by the camshaft, or by a special shaft driven by the crankshaft. With gauges inserted (using Tee fittings) and some clear hose, it is then just a matter of operating the motor at maximum fuel flow (wide open throttle) and note the. A faulty or failing stator can cause one or more symptoms. Plug Fouling. The information provided on these pages is correct to the best of my knowledge, however the MasterTech makes no warranty, express or implied, regarding the use of, results of, or liability created from, application of this data. All 944s and 968s - Terminal 30 to Terminal 87b If the fuel pump starts, it indicates that the fuel pump, power supply to the fuel pump, and wiring from the relay panel to the fuel pump are good. 3l fuel pump 140 click the entire page to read the installation instructions below the applications before you buy replaces the original carter screw style 60565 m60565 which is no longer made 3 line as pictured below inlet outlet & return to tank ford marine 2. Although all major manufacturers of outboard motors reports their engines run just fine on E10 fuel (E15 support is doubtful, and, in fact, may void warrantees), spokespersons for those same companies know that in the real world of fishing and boating, ethanol-added fuel has been a disaster. Thus fuel can flow easily through the primer bulb in only one direction. A leaky check valve gasket. Here you will find diagrams for Mercruiser parts and Mercury outboard parts including Mariner, Chrysler and Force outboards. 95 Canada & International- Please email me for a shipping quote. A 25 only needs 5/16 and some 1/4. A fuel injector is considered to be clogged if the amount of debris or gunk inside the injector or filter basket has built up to such an extent that it does not allow fuel to flow through. • Mercury MerCruiser's maximum engine fuel temperature specification that became effective January 1, 1996 is: Under the hottest outside air temperature condition that the boat will be. Get the best deal for Mercury Boat Parts and Accessories from the largest online selection at eBay. 9 Outboard Motor: Mechanical Fuel Pumps - Amazon. Diamond Marine Outboard Racing Engines is a Mercury Outboard Premier Service Dealer offering Mercury Racing Outboards, Parts, Rigging and Engine Mods. # 90-80856794 Fuel Pump(Plastic Body With Molded Fittings). Edelbrock is the most respected name in performance. The last boat I parted with had an E. I need to change my fuel pump on my 115 hp Mercury outboard. I began to have a problem with fuel pressure last summer and now have had 4 new fuel pumps installed @ a dealer. The sketch in figure 2 shows a typical V4 outboard fuel system. We carry thousands of the most popular and highest quality marine parts for all major brands of outboard motors, personal watercraft, and sterndrive applications. New premium aftermarket Mercury / Mariner Marine outboard electric high pressure fuel pump assembly. CAUSE OF FAILURE 2"Foreign particles" in fuel tank(s) or fuel lines, or fuel rail. Brucato Power provides the best Mercury ECU replacement and upgrade for Mercury EFI motors available! Stock or custom fuel curves on the Brucato ACU will get you back on the water for $1350. HawkeyeMarine 3,935 views. 5 In Stock - Ships Immediately. Lubrication. if it dribbles then you either have a bad accelerator pump or a restriction on the fuel side. plastic tank that required the fill cap to be loose to allow enough air to not vapor lock. COM, the BMW drivers' on-line resource for consumer information. Diamond Marine Outboard Racing Engines is a Mercury Outboard Premier Service Dealer offering Mercury Racing Outboards, Parts, Rigging and Engine Mods. Check the pump to be sure that it is dispensing E10. The actual procedure will differ or the amount that is suppose to be out is slightly different for each different motor. First opportunity, I'll launch the boat on my lake and run around for a few hours to make sure the running problems have been fixed. Walbro replacement fuel pumps, modules, and assemblies are designed to meet or exceed OEM specifications, and feature upgrades that improve on the OEM design. Acted like it ran out of gas (gas sending unit broke at the time, but fixed now) and filled up the tank. When putting in an aftermarket fuel pump or looking to get more fuel out of your factory pump, one mod worth doing is re-wiring that fuel pump. sometimes misfires/backfires when having these other symptomsYour fuel pump. 3lx overheating mercruiser motor runs hot 1990 mercruiser 5. Lubrication. Exterior Features; Bodyside/Cab Step or Running Board: Option; Bumper Step Up: Standard; Front Air Dam: Standard; Metallic Paint: Standard; Power Sliding Side Van Door: N/A; Power. These manual are designed to equip you with the necessary knowledge to do justice to everything from your outboard's basic maintenance to a more in-depth service and repair. That does not mean either the pump or the primer bulb is failing. wound up a piston had been siezing up and causing my problem, finally threw a rod through the block behind the uel pump. The last test is the one that I want a second (or third or fourth) opinion on. 3) Check fuel delivery. To demonstrate how to change the chevy small block fuel pump I am going to remove and replace the fuel pump on a seized chevy 305 I recently (May 2007) removed from my truck. It is immediately in front of the motor mount. Parts of an outboard motor's fuel system are cooled or vented to prevent or break up the bubbles in fuel lines that cause vapor lock. 0L DFI outboards that utilize a vapor separator with a top screw‑in type filter. Easy installation, outboard starts and runs normally on a garden hose. The Mercury manual provides maintenance information for 2005-2011 4 stroke marine engines with horsepower between 2. Not to say that injectors can just fail and yes as I am sure most would know on here there was a batch of suspect injectors with winding faults from new, but as i have said before most we see can also be fuel related and in an industry magazine that came today there is a big article about ethanol and what it can do in the marine. next time you start the motor pull the cowling off. Mercury 70 hp bogs down at full throttle. at mid to WOT it bogs down, as if fuel starved. An old or worn fuel pump may produce a noticeably loud whine or howl while running. The fuel pump pumps enough fuel when the engine is turning up to negate that little bit of air but at idle, it makes a lot of difference. (Actually , it was more like engine fuel flooding by air starvation was going on). For example, if using a mercury outboard motor, mark the level of the oil in the tank with the engine perfectly vertical. Talking to a Mercury mechanic about how to run it, he also said it was designed to run full throttle much of the time. Edelbrock is the most respected name in performance. listen for the pumping noise of the electric fuel pump. Fuel Pressure on Throttle Body Fuel Injection Fuel Pump is 12 PSI. Defender Marine offers boat supplies, inflatable boats and outboard motors from top manufacturers. This electric fuel pump is for fuel injection systems and designed to work in-line for easy installation. I asked them about the fuel pump, and the mechanic said without a doubt the old Fuel pump was bad. #3 Excessive fuel pump pressure: Avoid extremes in fuel pressure. The power control module or PCM now determines the speed at which an engine idles, based on several input-sensors. Starting Serial Number 0T178500. First opportunity, I'll launch the boat on my lake and run around for a few hours to make sure the running problems have been fixed. One sure way to prove pump malfunction is to manually pump the fuel to the carbs using the bulb on your gas hose, while the motor is running. Basically,. The last boat I parted with had an E. I bought a 1990 Mercury 25 hp outboard motor and started it for the first time today. Quicksilver 816296Q2 Marine Engine in-Line Fuel Filter with Barbs for 5/16-Inch (8 mm) Fuel Lines $7. Remanufactured powerheads for Mercury & Mariner outboard motors are covered by a one-year warranty and come with a powerhead installation gasket set. New Fuel Injector for Mercury EFI 4 stroke 30-40-50-60 HP. Keeping your MERCURY Mariner fuel system properly maintained is vital to your vehicle’s performance and fuel efficiency. The symptoms of a fuel pump failure include an inability for the vehicle to start or stumbling/stalling when the accelerator is depressed while the vehicle is under load. If it does then start right up it may be a faulty fuel pump, or the fuel line is not allowing enough fuel to the engine, or the one way valve in the hose is bad, or the tanks is sealed too tightly and is creating a vacuum that does not allow adequate fuel fuel to be pulled from the tank. Was the vent on the tank accidently closed or is there a small air leak somewhere in the fuel hose and fittings. There are no leaks that I detect and I've changed the fuel filters. Ask the experts on our Mercury Outboard Parts Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. Disconnect the Mercury Outboard switch and reset, if the engine fires, replace the Mercury Outboard switch. Holley's products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. Performance EFI How to properly modify your EFI fuel system for performance applications By: Jim Roal. Outboard motor fuel pump symptoms keyword after analyzing the system lists the list of keywords related and the list of websites with related content, in addition you can see which keywords most interested customers on the this website. The fuel pump is the powerhouse that sends filtered gas to the engine. Disconnect the Mercury Outboard switch and reset, if the engine fires, replace the Mercury Outboard switch. Have a problem with my Mercury 40HP outboard motor. Drain and clean all fuel lines and fuel tank 4. 5-40 HP Outboard Clymer Repair Manual Mercury 3. It may be that when your Yamaha outboard motor begins to sputter and cough, particularly at high speeds, you think something's "obviously" wrong with the fuel pump. After around 35hrs the fuel pump that runs off the cam shaft and delivers fuel to the engine just died. Remove Fuel Pump / DME relay and install jumper to bypass the Fuel Pump / DME relay and DME computer and directly power the fuel pump. I can crank the engine over but the car won't start. Automotive fuel hose doesn’t seem to be having the delamination problem but doesn’t have the UV inhibitors and may crack from UV damage. 0L The electric fuel pump runs at variable speeds to provide fuel in excess of. ( We do not service Diesel Fuel Injectors ) Improve your fuel economy, starting, idle, top end and total performance. Mercurys' fuel pump test takes about 1/2 hr, I never use it because I can rebuild 3 pumps in that amount of time. A fuel pump emergency can be stopped by paying attention to the temperature. Some repair procedures in this Yamaha 115 hp outboard downloadable manual may require the use of special tools. Get boat parts and outboard boat engine motor parts and accessories you need, when you need them. Browse our daily deals for even more savings! Free delivery and free returns on eBay Plus items!. Fits Mercury and Mariner motors that have the single pump in the VST tank. Mercury Rectifier Troubleshooting. Mercruiser (Mercury Marine) Cool Fuel Module Defect Investigation. Installs between the fuel tank and the primer bulb. If the cylinder has a leak, the pump pulse signal will not be strong enough to send the proper amount of fuel to the cylinder. DISCLAIMER. The bulb should go firm as soon as the carb bowl is filled if its valves are good and there are no leaks. The Forum is a free service, and much like the "free" content on Public Radio, we hope you will support WoodenBoat by subscribing to this fabulous magazine. Defender Marine offers boat supplies, inflatable boats and outboard motors from top manufacturers. the rpms pick up instantly when the bulb is pumped i can fairly confindently say that isnt coincidence as it happened 30+ times over the course of a week and about 50 -75 miles of running. Never filled with E10. Screw a compression gauge hose into the spark plug hole. Mercury Tech: 200 EFI - bad fuel pump? If this is your first visit, be sure to check out the FAQ by clicking the link above. This article shows how to replace the fuel temperature sensor or injection pump cover seal on a TDI engine. I was able to isolate the issue to 1 of 2 components - fuel lift pump that pulls fuel from tank and supplies to the VST/high pressure fuel pump or the high speed fuel pump itself. Was the vent on the tank accidently closed or is there a small air leak somewhere in the fuel hose and fittings. <- Back to Tech Corner Injector Flow Rates At Different Pressures. It's real intermitent. Browse our daily deals for even more savings! Free delivery and free returns on eBay Plus items!. Twist your throttle position wide open with one hand. (I had a heat soak problems when it would sit when it was near overheating 2 years ago, bad impeller, and same symptoms). DOWNLOAD 200HP Service Manual Mercury Johnson Suzuki Mariner Get this INSTANT DOWNLOAD 200 horsepower Mercury, Mariner, Yamaha, Suzuki, Johnson and Evinrude outboard engine repair manual delivered straight to your computer in seconds and fix your problem now. When it's running it runs great, no missing or anything. Like most injection systems, leak-down can result in long crank times or a stumble af-ter restart. Outboard Fuel Line Problems. 98 Only 3 left in stock - order soon. COM, the BMW drivers' on-line resource for consumer information. When I took it out for the 1st time, the engine would die unless I'd remember to pump the primer bulb every few minutes. Fuel pump problems are hard to diagnose sometimes. Remove fuel pump and clean out holes. FUEL RATINGS Mercury Marine engines will operate satisfactorily when using a major brand of unleaded gasoline meeting the following specifications: USA and Canada ‑ having a posted pump octane. Florida Injection Service ships injector orders over $80. Same symptoms. This is important because it is this return stroke that allows the fuel to fill up the accelerator pump well.