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Old 08-07-2009, 05:58 AM   #74
ApS
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Talking Change Boats, not Fuel Pumps

Quote:
Originally Posted by bigdog View Post
"...The list is getting shorter..."
It really is, and I applaud your efforts to "DIY".

I haven't read where you've changed the fuel line from the pump to the carburetor. I've had even a braided stainless steel brake line "squish itself shut"! (And a brake pedal's pressure is some pressure to overcome. )

Electric fuel pumps in the range of 3-5 psi can be tested by using your thumb to halt its pressure. They should also put out enough pressure to squirt gas strongly as you release your thumb. At only 3-5 psi, I'd expect a simple gravity-feed from an alternative tank would run your engine—even under a load.

The diaphragm inside can develop a leak. It may be a relatively easy fix, and a kit may be available from NAPA stores. You could even make a decent diaphragm by cutting one out of a suitable material, like material from a "close-enough" repair kit. How's that for "DIY"?




Quote:
Originally Posted by bigdog View Post
"...One way or another, I will be using my boat this vacation, even if it means sitting in my boat..." )
Hey, I believe we have the makings of a "lake sailor" here!
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