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Re: Fuel delivery problem?, starts hard when cold, UPDATE
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Originally Posted by Big J Olds
Hey i noticed the "tool" you used to test full pump pressure and was wondering how you were able to get the reading you needed if you hooked it up to the filter side? Isnt that the inlet? Dont you need to block the return line? I would really like to know how that worked because I have to do the same thing on mine before it gets freezing. Thanks
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The Schrader valve is on the input line side. I removed the fuel line (quick connect side) from the output of the filter, and inserted the tool between the filter and the schrader valve line. The pressure regulator in the intake manifold stops the fuel from returning to the tank via the return line until ~70PSI, at which the reg. would open. So in essance what I did was test the pressure regulator by stopping the fuel flow after the filter. If pressure stays maintained with the tool valve closed, press. reg. is OK. If pressure goes to 0 rather fast with tool valve open, pump is leaking- as was my case, a hole in the fuel pump hose.
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'04 T&C,'01 Blazer ZR2, '97 Blazer, '97 Sunfire, '85 Vette, '79 Civic, 94 FLSTC
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