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Mechanical Fuel Pump 1994 7.4

M

mybago

Member
Good Morning,

I have a 1990 7.4/454 VP that is raw water cooled. She starts and will rev up when it is not under load. Under load she sputters and will not push the boat up to plane - feels like she is starving for fuel. What are the signs that a mechanical fuel pump has failed?

My oil has a gas smell to it and at the end of last year I had some gas in my bildge. No visable signs of leaking fuel at all - but there was gas in the bildge.

Your thoughts please. Thank you.
 
Re: Mechanical Fuel Pump

Mechanical fuel pumps do have a clear plastic hose attached to the tell-tale and diverting the fuel to the carb spark arrestor. If you see fuel in that hose, then the pump diaphraghm is leaking.

Please, delete the other post you made about this same topic so that all the responses you get about this porblem appear in the same thread. Thank you.
 
Re: Mechanical Fuel Pump

yeah im with el pescador, obviously check the fuel filter,but if thats a known good one then yeah id say the diaphram is bad in it
 
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