MrMagic
04.05.2021 20:58:53
Depends on what year of engine. Usually need to drop the lower starboard part of the cowling and then remove the small 3/8? bolts, disconnect the hose. Some have round covers, other the figure 8 style.
See full version: Mercury V6 Poppet valve Replacement
Depends on what year of engine. Usually need to drop the lower starboard part of the cowling and then remove the small 3/8? bolts, disconnect the hose. Some have round covers, other the figure 8 style.
Re: Mercury V6 Poppet valve Replacement
Re: Mercury V6 Poppet valve Replacement more
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Your Outboard Optimax will run like NEW! [links]
Have us Repair your DIAPHRAM. We will replace the Rubber Diaphram on your Fuel Regulator or Air Regulator at less than 1/4 the price Mercury will charge you for a NEW RAIL. [links]
The OPTIMAX is the most MIS-DIAGNOSED engine out there.
Symtoms caused by leaking REGULATOR DIAPHRAMS point to:
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Rubber Regulator Diaphrams dry and crack because of today's fuel content. Also, low engine use tends to dry out the Diaphrams. here
Fuel pumps on outboard motors work a little bit differently than they do on automobile engines. The outboard fuel pump has a sensitive diaphragm that receives a suction signal from a piston cylinder so the pump can deliver fuel. 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. 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. A process of elimination will narrow down a bad fuel pump.
Refer to your owner's manual for the correct psi your engine needs. If the compression falls below 30 psi, per specifications, your fuel pump will not function adequately due to low pulse pressure. Repair the compression problem first. Unscrew the compression gauge hose and install the spark plug. Tighten the spark plug with a socket and install the plug wire back on the plug tip. Perform this test for multiple cylinder engines. more
Screw a compression gauge hose into the spark plug hole. Twist your throttle position wide open with one hand. Pull your rope start with the other hand so the engine turns over at least four or five times. Check the compression reading in psi (pounds per square inch) on the gauge. If you have an electric start motor, have an assistant crank the engine over while pushing the throttle wide open. more