This part suits the following engines: Evinrude Johnson 4.5-15hp 2 Stroke 1970-1992. You want to run your outboard motor at its peak efficiency. A process of elimination will narrow down a bad fuel pump. If you have an electric start motor, have an assistant crank the engine over while pushing the throttle wide open. Brand New. HFP # HFP-382S-OB - Quantum EFI Outboard Fuel Pump Johnson/Evinrude J115PX4STS / 115 HP , Replaces Johnson/Evinrude 5033702 - HFP replacement fuel pumps, modules, assemblies, and kit components are designed to meet or exceed OEM specifications, and … This component is needed to protect the motor from contaminants that are in the gasoline. The fuel pump is driven from the pulses of the crankcase or from a rod that is driven by the crankshaft. $49.13. Here are some of the most common reasons the outboard is struggling to start. Fuel pump. Tighten the spark plug with a socket and install the plug wire back on the plug tip. The fuel pump on the outboard is responsible for pumping fuel from the gas tank to the carburetor, which in turn powers the boat and enables it to accelerate when the throttle is increased. Read the gauge. Readings below this point to a bad diaphragm or pump check valve. Allowing the raw fuel to make its way out the exhaust and straight into the water. What Are the Symptoms of a Bad Coil on an Outboard Motor? This is a New Outboard Fuel Pump with Gasket Fit for Johnson/Evinrude 20-140HP Replaces 438556. (500 mm). You can find it under the engine’s main cover.eval(ez_write_tag([[300,250],'bornagainboating_com-leader-2','ezslot_19',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. Screw your compression gauge hose to the hole of the spark plug. Buy It Now. Which is what we have covered for most of this article. The sketch in figure 2 shows a typical V4 outboard fuel system. Johnson Outboard Parts Forum; If this is your first visit, be sure to check out the FAQ by clicking the link above. 12 product ratings - Johnson/Evinrude Outboard Fuel Pump, 20-140hp - 438556, 18-7352, 48/90/115 - EMP If one or more cylinders are damaged due to improper timing settings, lean fuel condition, overheating, or stuck rings from carbon buildup, your outboard is about to become history. Marine fuel hose works on negative pressure (vacuum), where the fuel pump in the engine sucks the fuel into the hose from the tank. 1988 Johnson Outboard Restoration Menu Toggle. Only 1 left in stock - order soon. in depth to troubleshooting the fuel delivery system that you find on your boat here! Outboard fuel pumps rarely fail, and diagnosing a fuel problem involves checking other components that can be easily mistaken for a bad check valve or diaphragm in a fuel pump. Please check pictures for more details. $27.99 $ 27. Inspect the fuel line hoses and connections from the tank to the fuel pump location for kinks and leaks. Johnson Outboard Parts Forum; If this is your first visit, be sure to check out the FAQ by clicking the link above. FREE Shipping by Amazon. Top Rated Seller Top Rated Seller. 9. Fuel Pump w/ Gasket 438559 433390 385784 for Johnson Evinrude Outboard 25-235HP. When the diaphragm wears out or becomes damaged, the mechanical fuel pump might not work at all or cause performance issues. Free Shipping and 100% guaranteed Orders placed before 3PM PST ship out same business day. Home > FUEL PUMPS/VRO/FILTERS > Evinrude Johnson VRO BRP Fuel Pump REBUILD KIT-All Years and HP- 435921 ... Start engine and run it at full throttle. johnson outboard 9.9. Thanks . Coming out of the fuel pump the fuel line goes directly to the carburetor. If you only have ethanol available to run in your boat. 10. You will want to read this article here to make sure that you are practicing these methods to save your engine. Compression is the heart of an outboard. Johnson, Evinrude, OMC, outboard motor, outboard motor repair, 9.5 hp, date/year of manufacture, water pump, carburetor, Maintaining Johnson QD Series 10 hp 2 cycle outboards. 1,479 sold. At 800 RPM, the oil level in the hose should drop 1" in approx. Thankfully, outboard fuel pumps don’t fail often. I had to drill out the check to allow full both way action to operate the fuel pump … If the diaphragm becomes worn or torn, fuel can escape through the diaphragm and come out of the fuel pump housing. Alibaba.com offers 272 johnson outboard fuel pump test products. A coffee can under the hose and install the plug wire boot off the filter free a typical outboard. And connections from the tank for too long, it can no longer ignite the air/fuel mixture C $ 5! 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