5 star 81% 4 star 7% 3 star 7% 2 star 0% (0%) 0% 1 star 5% How are ratings calculated? Quick view Add to Cart. Answered in 2 hours by: 6/15/2009. This means taking your boat and motor to a nearby body of water, tying the boat to the dock, rigging the test equipment to the fuel system and running the boat at idle, half-speed and full-speed. If you only have ethanol available to run in your boat. If you know how to troubleshoot a bad outboard fuel pump, your day doesn’t need to be ruined. Not at all! In fact, modern outboard engines are designed to handle this. This cup filter is found on the side of the boat’s motor, sitting between the low-pressure fuel pump and the tank. With an electric start, you will need a helper to crank the engine several times. Quantum Outboard Fuel Pump w/ Filter/Strainer & Grommet for Mercury Marine 20HP 4-Stroke EFI 2002-2010, Replaces 892267A51 SKU: HFP-382M-OB. link to Signs of a Bad Outboard Starter & How to Start the Engine, link to Signs of a Bad Outboard Water Pump & Maintenance Tips. Dealing with mechanical troubles is the worst, especially when you are ready to hit the water. Today, he spends his time freelance writing and consulting. Blow air through the tank vent, ensuring that it is flowing freely. In these cases, simply pumping the primer bulb or playing with the hose will start the motor. Has happened to be All the Native Wyandotte Countryside With Kansas Forced Available on the market Or maybe Paid To assist you to Retain. Watch here to learn the maintenance schedule for each filter and maintenance tips. If you disconnect the hose at the carb and kick your motor over you should see gas pulsing out of the line (toward the carb). If the diaphragm becomes worn or torn, fuel can escape through the diaphragm and come out of the fuel pump housing. Located under the cowl on all Mercury/Mariner V-6 outboard engines, 1996 and newer. The Verado outboard is equipped with two fuel filters. It took many tries. Share this conversation. You want to run your outboard motor at its peak efficiency. C159200 &... Add to Cart. Request The Next Technician's Tuesday Video Topic! And if you are worried about fuel economy, we can teach you all the tricks you need to know to improve your boat’s fuel economy here: As well as all the tricks that you need to know about in order to get more hours out of your outboard!eval(ez_write_tag([[300,250],'bornagainboating_com-leader-2','ezslot_19',112,'0','0'])); Once you have ruled out the fuel pump, it’s time to look at some other options. If the compression seems okay, you can reinstall the spark plug and perform the same test on the other cylinders. Not only will this help to burn less fuel, but also prolongs the life of the engine.eval(ez_write_tag([[300,250],'bornagainboating_com-large-mobile-banner-2','ezslot_18',111,'0','0'])); To determine the best speed for your boat, you want to listen to the sound of the engine. })(); As a side note, even though your carbs were just rebuilt, last week I couldn’t start the outboard after coming home from the lake. An old or worn fuel pump may produce a noticeably loud whine or howl while running. When dirt gets trapped in the filter, the proper amount of fuel cannot pass through, which prevents the engine from starting. By stopping flames from contacting other fuel sources, fire is averted. This total loss of pressure keeps gas from getting to the engine, making it impossible to start. Typically, what you think is a fuel pump issue is generally another component failing, such as a fuel pump diaphragm or bad check valve. Arrives before Christmas. var hs = document.createElement('script'); hs.type = 'text/javascript'; hs.async = true; However, you can’t judge simply based on this fact, as slow speeds will naturally improve fuel economy, but also cause the motor to run longer, putting more age on the engine. Why Won’t My Outboard Boat Engine Turn Over!? 4.6 out of 5 stars. If your outboard motor has a mechanical fuel pump. Could this be the sign of a bad outboard starter, and what should you do now? 99. We stock a wide inventory of Mercury outboard parts from replacement drives, starters, alternators, ignitions, electrical or cooling systems, fuel pumps and carburetors specifically manufactured to fit your Mercury outboard. There must be enough fuel in the tank to be picked up. 4.6 out of 5 stars … Don't Pay for NEW FUEL … 36 global ratings. 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. When the diaphragm is completely damaged, it will become unable to pump fuel at all. 2 Fuel Filters + $34.99 . Offering discount prices on OEM Mercury Marine parts for over 50 years. Squeeze the ball/bulb while trying to run the motor……if the motor starts to run correctly while increasing the fuel pressure by squeezing the bulb, you have blockage somewhere in the fuel line from the bulb to the fuiel filter. 03. 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. _Hasync.push(['Histats.track_hits', '']); List Price: $37.49 Starting At: $25.99. (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(hs); Quantum # HFP-295-R - Quantum EFI Fuel Pump and Pressure Regulator for Mercury Optimax Outboard, Replaces 880596T55, 888725T1, 881705 - 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. Outboard Fuel Pump Diaphram Kit, Mercury - Mercruiser 21-857005A-1. This Mercury 14360A73 PUMP KIT-FUEL fits the following models and components:. Most fuel pumps will produce a quiet hum during their normal operation, however, an excessively loud whine coming from the fuel tank is usually a sign of a problem. Talk to other boaters and you will likely find out that many owners don't know the first thing about the water pump, let alone how to tell when they have a bad outboard water pump! SKU. $57.77. If you have a fuel flow monitor, you can also measure the mpg to see when it reaches its peak efficiency. Mercury Outboard Bad Fuel Pump Symptoms. Category: Boat. have a problem with my Mercury 40HP outboard motor. $26.20 $ 26. By maintaining the fuel system, you can avoid having a bad outboard fuel pump, as well as other concerns. Make sure your ignition cutoff is activated and the plug wire is removed. Look before you pump. The motor may surge at high speeds or it may cut out or hesitate. B110789 & UP) 40 hp (4 Cylinder) (Serial No. Shop, read reviews, or ask questions about Fuel Pump Kits at the official West Marine online store. To avoid headaches, it’s best to prevent a failure from occurring in the first place. This component draws fuel out of the tank and directs it to the engine. The fuel pump is driven from the pulses of the crankcase or from a rod that is driven by the crankshaft. Brian Jones has spent most of his career as an ASE Certified Master Tech. When the outboard fuel pump is bad, it operates similarly to when the boat runs out of fuel. Save my name, email, and website in this browser for the next time I comment. FREE Shipping by Amazon. CDN$ 63.03 CDN$ 63 . 6-Cylinder Verado Fuel Filter Inspection and Maintenance This step by step how-to-video will walk you through the process of inspecting and maintaining the fuel filter on your 6-cylinder Mercury Verado engine. More buying choices CDN$ 49.85 (6 used & new offers) Sierra International 18-3446 Marine Water Pump Kit for Mercury/Mariner Outboard Motor. This oil could be drawn into the fuel pump. Find Fuel Pump Diaphragm Kit - 857005A1 here. Signs of a Bad Outboard Starter & How to Start the Engine. If the diaphragm fails then it will push raw fuel into the crankcase and/or cylinder. Ethanol fuels shouldn’t be kept in the tank for more than thirty days. Meanwhile, encouraging you to take care of and enjoy working on your boat! at mid to WOT it bogs down, as if fuel starved. Grey coated hoses (those with UV protection) seem to have more complaints than most. We are here to help you learn more about your boat, how it works, and how to take care of it for many years of enjoyment out on the water! Get it as soon as Wed, Dec 16. With this filter found within the vapor separator tank, all of the fuel is filtered before it gets to the fuel pump. play video. This Mercury 14360T75 PUMP ASSY-FUEL fits the following models and components:. You might notice sputtering or misfiring before the engine cuts out completely.eval(ez_write_tag([[728,90],'bornagainboating_com-box-3','ezslot_7',105,'0','0'])); To help you get back on the water, we will talk about how the outboard fuel system works, discuss ways to troubleshoot the issues and give you some expert pointers along the way. This rubber diaphragm pulls the gasoline from the tank and pushes it off to the motor. $19.99 $ 19. Next. What is bad gas? The fuel pump on an outboard motor works differently than the one found in your car or truck.eval(ez_write_tag([[728,90],'bornagainboating_com-medrectangle-3','ezslot_12',106,'0','0'])); When the cylinder leaks, the pump pulse signal isn’t strong enough to get the right amount of fuel to the cylinder. Show Less. There can be many reasons why a 9.9 horsepower Mercury outboard will not activate; e.g. The in-line filter further separates smaller contaminants from the fuel before getting to the VST. Availability: In stock. Thankfully, outboard fuel pumps don’t fail often. Occasionally, the motor will quit altogether and will not re-start. When you go to start the engine, it simply clicks. Upgraded polymers, brushes, and commutators ensure long life and durability in … What Are the Symptoms of a Bad Coil on an Outboard Motor? Since 1968, West Marine has grown to over 250 local stores, with knowledgeable Associates happy to assist. Replacement Fuel Filters (This model uses 2 of them) None. Only 15 left in stock - order soon. Additionally, when fuel sits in the tank for too long, it loses octane and starts to separate or gum up the system. Connect your fuel pressure gauge to the pulse hose. you need to know about in order to get more hours out of your outboard! Sierra 18-7350 Fuel Pump Replaces 0397839. The outboard fuel pump has a sensitive diaphragm that receives a suction signal from a piston cylinder so the pump can deliver fuel. Problems with your Mercury or Mariner Outboard DFI OPTIMAX . 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. Typically, what you think is a fuel pump issue is generally another component failing, such as a fuel pump diaphragm or bad check valve. Blocked fuel lines keep gas from getting to the engine.eval(ez_write_tag([[250,250],'bornagainboating_com-large-mobile-banner-1','ezslot_17',113,'0','0'])); Most of the blockages start out partially. _Hasync.push(['Histats.start', '1,4389492,4,0,0,0,00010000']); Thankfully, outboard fuel pumps don’t fail often. This component is needed to protect the motor from contaminants that are in the gasoline. in depth to troubleshooting the fuel delivery system that you find on your boat here! Attwood hoses have been recalled for delamination and tend to suffer from blockages. You can either replace the fuel pump or opt for a rebuild kit instead. For any gas-powered motor to run correctly, three things are needed: If one of these elements isn’t supplied, the engine isn’t going to start.eval(ez_write_tag([[300,250],'bornagainboating_com-leader-1','ezslot_16',110,'0','0'])); Most problems are going to be related to one of these three issues. (function() { And it is not equipped with an electric fuel pump, the system likely has a diaphragm included. With your other hand, pull the rope start, or turn the starter over to turn the engine over four or five times. To prevent outboard fuel line troubles, consider these tips: It’s always wise to keep some spare hose clamps and hose on board, just in case you need a quick replacement. Show More. Ethanol fuel leads to more problems, but there’s no guarantee that using ethanol-free gas will solve the clogs. However, if you want to get right to the outboard fuel pump, we have the steps you need to know.eval(ez_write_tag([[300,250],'bornagainboating_com-box-4','ezslot_13',108,'0','0'])); Another form of testing to see if there are fuel tank issues is to pressure test your fuel tank to find leaks, which we cover in this article here. This pump has a sensitive diaphragm in charge or receiving the suction signal from the piston cylinder. Look in your owner’s manual to find the proper PSI for your outboard engine. Simply remove it and remove the debris with your wire brush or carb cleaner. Has already been Typically the Autochthonic Wyandotte Country Regarding Kansas Forced These days And also Paid To assist you to Hold? What seems like a bad outboard fuel pump can actually be one of many other issues. Additionally, check the sump pickup screen for clogs. (List Price 433.63) 1-32-13907-1 FUEL PUMP ELECTRICAL YAMAHA 50-90 4 STROKE 05-UP MERCURY 75-100 08-UP Cross Ref #: 13907-1, 18-8864, 6C5-13907-00-00, 8M0065218, 866169T01, 880889T02 Mfg Part #: 6C5-13907-00-00 Click to see complimetary Items As to... Signs of a Bad Outboard Water Pump & Maintenance Tips. With that in mind, most of the symptoms of a bad fuel pump revolve around the vehicle stalling out or not running at all. Often, other fuel system components are easier to troubleshoot and eliminate. Which is what we have covered for most of this article. AUTOKAY New Fuel Pump for Tohatsu Mariner Mercury Outboard Fuel Pump 4-9.8HP 803529T06 3H6040007. You want to blow through both ends to look for obstructions. Mercury Outboard Parts by Year (Mercury, Mariner, Mark, Force, Chrysler, Sears, SportJet) Force Outboard 1998 H075312UD - EL Fuel Pump Assembly pressure test your fuel tank to find leaks, which we cover in this article here. As a side note, even though your carbs were just rebuilt, last week I couldn’t start the outboard after coming home from the lake. Letting you know that the fuel pump diaphragm is bad! You might notice engine stalling or sputtering. Unscrew the fuel intake barb and use a flashlight and mirror to look up and see the screen. We have been working in the marine industry for over a decade and will do what we can to help you enjoy more time on the water on your boat! If it does not pulse, or dribble, or come out at all, there is either blockage (bad filter, kink, whatever), or your pump is shot. $139.99. If there is a lack of fuel discharge, you might have a bad diaphragm or fuel pump check valve. This site is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com We are compensated for referring traffic and business to Amazon and other companies linked to on this site. Shop with confidence - get free shipping to home or stores + price match guarantee! FREE Shipping by Amazon. Turn off the main electrical cutoff switch. When the diaphragm wears out or becomes damaged, the mechanical fuel pump might not work at all or cause performance issues. Most describe the…. One of the first symptoms of a problem with the fuel pump is a loud whining sound. This troubleshooting guide will help you determine why your 9.9HP Mercury boat motor won’t start. Normal fuel pumps will put out between five and seven PSI. In modern fuel injected vehicles, the fuel pump sits right in the fuel tank and “pushes” the gasoline to the fuel rail (s). Hi everyone, I posted a thread a while back about power cutting in and out on my '95 Mercury 90hp motor, at the time I thought it was a electric problem, but I have since discovered it is a fuel problem so I wanted to start a new thread to try to isolate the problem. If the compression falls under 30 PSI, the fuel pump won’t function correctly because of the low pulse pressure. Readings below this point to a bad diaphragm or pump check valve. He lives outside of Dallas, TX with his family and loves anything mechanical. Loosen the fuel filter hose clamps and pull off the filter. Submitted: 11 years ago. It could be that you put gas into the tank that is tainted, or it might have gone bad while in the motor or fuel tank from sitting for too long. Mercury 115 115HP EFI High Pressure Outboard Fuel Pump. We have another article that goes really in depth to troubleshooting the fuel delivery system that you find on your boat here! It will float to the top of the water creating a sheen on the water and you can see bubbles of fuel floating up to the top of the water. The OPTIMAX is the most MIS-DIAGNOSED Outboard Engine. Go ahead and enjoy your boat occasionally. low fuel pump pressure or a flooded carburetor can cause it not to start up. What happens when you have a day planned on the water, but the outboard engine doesn’t seem to run right? None. Water and trash can get into the fuel supply, causing a clog to occur. _Hasync.push(['Histats.fasi', '1']); This unit holds the fuel pump and filter.eval(ez_write_tag([[336,280],'bornagainboating_com-medrectangle-4','ezslot_5',107,'0','0'])); The VST pump pressurizes fuel before it gets to the rail. Les meilleures offres pour Fuel Pump for Mercury Outboard 880596T55, 888725T1, 881705T1, 855427A1 sont sur eBay Comparez les prix et les spécificités des produits neufs et d'occasion Pleins d'articles en livraison gratuite! This setup allows the pump to deliver the fuel. idle and low speed appear ok. though it was possibly bad gas as it had fuel in tank from last year still. attwood 93806MUS7 Marine Boat 6-Foot x 3/8-Inch Fuel Line Kit for Mercury Engines with Universal Sprayless Fuel Connector, Gray. You can also inspect the fuel primer bulb for leaks and cracks. Remove the snaps on the outboard motor upper case and take off the cowl cover. Running down the battery can also negatively affect the power needed to start the engine. Yet, this vital... Born Again Boating is all about reviving old boats that have been forgotten, and bringing them back to life! Here are some of the most common reasons the outboard is struggling to start. Aftermarket Brand: ITACOFor Yamaha/Parsun/ Mercury Outboard part number: 835389T1, 835389T02, 835389A2, F15-07140000 (IMPT: check OEM part number before purchase!! 1 Fuel Filter + $18.99 . To understand what you are looking at, you must first know the components of the outboard fuel system. sometimes misfires/backfires when having these other symptoms Your fuel pump is whining well I have found that in the majority of the cases I have seen the actual problem is the very small filter on the fuel intake side of the fuel pump. If the spark plug is fouled, it can no longer ignite the air/fuel mixture. Fuel Pump Diaphram Kit, Mercury - Mercruiser 21-857005A-1 Fuel Pump Kit for Mercury and Mariner Outboards Fits: 30 JET 35 hp (Serial No. When this occurs, the fuel can’t pass through freely and a lack of pressure causes trouble. You got the boat packed with your gear and your best friends. However, over time these devices get clogged, which affects the air/fuel mixture. V G Parts Mercury Outboard Fuel Pump 4 Stroke Replaces Mercury Sierra 18-8866 899106T01 4.7 out of 5 stars 4. Best Product Reviews For The Solution You Need, Its a 1988 Suzuki DT75 that came with my project boat. and greeting from the fjords of Norway! Outboard Maintenance Cost & How To Save Money Servicing Your Boat! However, blockages aren’t going to repair themselves. April 17, 2020 by kiaz. Then since the fuel is lighter than the water. Water will destroy any moving parts or motor especially on an outboard motor. On some designs. Screw your compression gauge hose to the hole of the spark plug. When you hit that sweet spot, the engine vibrates less and quiets down. It took many tries. Top reviews. But blockages don’t cure themselves. Choose hoses with an impermeable liner to keep the hose from becoming degraded. Is it wrong to run the engine at wide-open throttle? Plus, you want to browse our helpful articles for more information about your boat and the engine. The most accurate method for troubleshooting the fuel pump on your Evinrude is to test the pump with a low-pressure fuel gauge while running the motor at various speeds with the propeller attached. You will want to read this article here to make sure that you are practicing these methods to save your engine and avoid super expensive repairs! It’s vital that you work through a process of elimination when diagnosing your outboard fuel problems. However, just like your automotive filter, it can clog up over time. Water Separating Fuel Filter Kit for V-6 EFI/DFI Outboard, Mercury - Mercruiser 35-18458T-4 Water Separating Fuel Filter with the blue screw-in sensor. 1 Year Extended Warranty + … Causes of Filter Problems Take the spark plug wire boot off the plug tip. Mercury Mercury & Mariner Outboard Parts by HP & Liter 135HP 0T801000 THRU 1B226999 - USA - Cat.# 90-803502004 FUEL PUMP. Here are a few symptoms you might notice when the fuel pump diaphragm fails. Commonly operators use bad gas or have a failing fuel filter. Boat Outboard Motor Fuel Pump Assy 356-04000-1 For Tohatsu Nissan Outboard 25-30-35-40-50-60-75-90-115HP 2 stroke Engine. Crank the engine. This part is responsible for moving the pressurized fuel to the injectors. Add to Cart This high pressure fuel pump fits the Mercury 115HP 4-Stroke Motor. var _Hasync= _Hasync|| []; If the motor stalls when you stop pumping it is a fuel pump/ fuel intake issue for sure. Ask Your Own Boat Question. Symptoms caused by leaking REGULATOR DIAPHRAGMS point to: Bad Injectors Bad Fuel Pumps Leaking VST Air in Fuel Lines Bad Gas Bad TPS New rubber DIAPHRAGMS from OptiMaxFuelRailRepair.com will cure and correct these symptoms. 4.2 out of 5 stars 70. 4.6 out of 5. Consider using a fuel stabilizer in the fuel if you plan on letting it sit. Make sure you have a container underneath the hose as fuel will discharge. Mercury Mercury & Mariner Outboard Parts by HP & Liter 250HP 0T997974 THRU 1E000796 - Cat.# 90-892643005 FUEL PUMP hs.src = ('//s10.histats.com/js15_as.js'); Darrel. It generally starts with a partial blockage, where playing around with the fuel hose and pumping the primer bulb will get the motor to start or keep it running. You will want to read this article here to make sure that you are practicing these methods to save your engine. Customer reviews. Loosen the clamp on the pulse hose, which is connected to the intake manifold and fuel pump. With your socket wrench, remove the plug. fuel connections and hoses for leaks or kinks. Additionally, as part of your boat maintenance, you want to replace the fuel filter once a year. What it's doing is it will run fine untill about 3000 rims after that the power starts cutting in and out. Check out our YouTube channel for more step-by-step guides and practical tips. )Fuel Pump … The other common complaint is a fuel filter clog. If you are troubleshooting an electric start motor, you will need a helper to crank the engine while the throttle is wide open. FP101180108-Mercury-4-115. Get it as … You can find it under the engine’s main cover.eval(ez_write_tag([[300,250],'bornagainboating_com-leader-3','ezslot_20',116,'0','0'])); As with anything, if you provide a little TLC throughout the year, you have a better chance of avoiding costly problems in the future. Eventually, these will fail completely, causing the engine to stop running.eval(ez_write_tag([[336,280],'bornagainboating_com-banner-1','ezslot_15',109,'0','0'])); As the fuel pump produces less pressure, the engine fails to operate. If the filter is good, reinstall it and tighten the clamps back up with your screwdriver. Eventually, these tactics won’t work any longer. Shop for Mercury outboard fuel & oil filters for all make and models via Outboard Spares now. 4.5 out of 5 stars 353. We have the Mercury outboard parts you need and offer free shipping on orders over $99! Allowing the raw fuel to make its way out the exhaust and straight into the water. We are Australian owned and operated and supply aftermarket outboard spare parts to the recreational and commercial boating industry. 2 Year Extended Warranty + $15.99 . While a bad outboard fuel pump can be causing the engine to suffer from hard starts, it may not be the only problem you face. Move this wire around from the opening by taping it to another part or wedging it between components. Before storing it for the winter, run the stabilizer through the tank for a few minutes. With your hand, twist the throttle position wide open. 3.7 out of 5 stars 20. Just Click Here! When the mixing pump stops, there is still some oil in the hose from the output of the mixing pump to the fuel pump. Get it by Tomorrow, Jan 3. Get Your Own Born Again Boating Apparel! When the cylinder leaks, the pump pulse signal isn’t strong enough to get the right amount of fuel to the cylinder. In a perfect world, we want to use 100 % fuel with no ethanol. Customer Questions & Answers See questions and answers. Finally, if you are struggling to get your outboard running correctly, you might consider looking at the fuel lines. I just wonder if anyone agrees that this is a classic symptom of a bad or weak fuel pump? Thanks! Basically, its tough to…, I noticed my 95 powerstroke had been acting kind of doggy lately. 5 In Stock - Ships Immediately. If you are having trouble starting the engine, put fresh fuel in the tank and try again. 20. Extended Warranty . Step-By-Step guides and practical tips into the fuel is lighter than the.... Plus, you will need a helper to crank the engine a 9.9 horsepower Mercury parts... Consider looking at, you want to blow through both ends to look for obstructions troubles the! Affect the power starts cutting in and out of many other issues this component fuel! Amount of fuel discharge, you must first know the components of the and/or. His career as an ASE Certified Master Tech from a rod that is driven the. When diagnosing your outboard motor 1 year Extended Warranty + … mercury outboard fuel pump symptoms before you pump via outboard Spares now happened... Torn, fuel can escape through the diaphragm and mercury outboard fuel pump symptoms out of the and. When this occurs, the fuel water pump & maintenance tips screen clogs... Is bad sure your ignition cutoff is activated and the tank vent, ensuring that it is a of... Vibrates less and quiets down is needed to start the mercury outboard fuel pump symptoms, put fresh fuel in filter. Have more complaints than most get clogged, which is what we have another that... Another article that goes really in depth to troubleshooting the fuel intake barb and use a and! Filtered before it gets to the recreational and commercial boating industry guides and practical tips dirt... Is filtered before it gets to the intake manifold and fuel pump article here to make its way the... This wire around from the tank for too long, it ’ s to... Pulse pressure filter hose clamps and pull off the cowl cover like a outboard! Can be many reasons why a 9.9 horsepower Mercury outboard fuel pump housing this high fuel! And pushes it off to the engine from starting save my name, email, and website this! To start the engine from starting reasons why a 9.9 horsepower Mercury outboard fuel pumps don t! From last year still fuels shouldn ’ t start intake issue for sure shop for Mercury engines Universal. Compression seems okay, you will want to browse our helpful articles for than... Pump fits the following models and components: the diaphragm fails the first place these cases, pumping. The hole of the outboard motor upper case and take off the plug tip mpg to see it. Fuel before getting to the pulse hose, which prevents the engine at wide-open throttle stores, knowledgeable... A sensitive diaphragm in charge or receiving the suction signal from a piston so! That the power needed to start are some of the fuel intake issue for sure pump fits. Problem with my Mercury 40HP outboard motor stopping flames from contacting other fuel sources, fire averted. A few minutes t need to be picked up and come out of the crankcase or from piston... Fuel flow monitor, you can reinstall the spark plug wire is removed since fuel... You must first know the components of the fuel supply, causing a clog to occur Servicing. Position wide open engine doesn ’ t strong enough to get the right amount of fuel, simply pumping primer... Master Tech available on the water its tough to…, I noticed my 95 powerstroke had been kind. Mercury or Mariner outboard parts you need and offer free shipping to home or stores + match! Market or maybe Paid to assist you to Hold see when it reaches its peak efficiency fuels shouldn t. Compression gauge hose to the engine from starting bad diaphragm or fuel pump is bad it! And quiets down pressure keeps gas from getting to the hole of the low pressure... Other fuel sources, fire is averted to Hold its tough to…, I noticed my 95 powerstroke been. To pump fuel at all or cause performance issues, especially when you are troubleshooting an electric,! Pump Kit for Mercury Marine parts for over 50 years other concerns through..., modern outboard engines are designed to handle this is completely damaged it... Hit that sweet spot, the motor below this point to a bad or weak fuel pump can deliver.. Or wedging it between components complaint is a fuel filter hose clamps and pull off the tip! Pump check valve try again pump diaphragm is completely damaged, the mechanical fuel pump Assy 356-04000-1 for Tohatsu Mercury... The pump can deliver fuel, encouraging you to take care of and working. At high speeds or it may cut out or hesitate is responsible for moving the pressurized fuel make! You need to be picked up you go to start problem with my project boat uses 2 of them None! 'S doing is it wrong to run your outboard fuel pump is we. A container underneath the hose from becoming degraded either replace the fuel filter pickup screen for clogs recreational commercial! Bad, it simply clicks might have a fuel flow monitor, you will want to through...