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newer fuel pump retrofit for '71 1800e 1800 1971

uid 4846's pic
posted by  JohnMc on  Tue May 3 01:45 CST 2005
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last visit: Thu Oct 23 07:42 CST 2014
[RELATED]

Hook a pressure gauge up on the cold start valve hose. See what it says. The original pump was constantly pumping a large volume of gas, the regulator just diverted most of it back down the return line and back to the tank. On the other side of the regulator you should always see a steady 28 - 32 psi (I've seen various numbers for that, perhaps it varies per car, and it is a way to fine tune the mixture over the entire rpm range). If you are having pressure spikes, it is vaguely possible that the regulator can't handle the flow, but I doubt that. I'd suspect a sticky regulator, or perhaps a plugged return line. Even the tiniest amount of grit can make a regulator not work properly.
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I'm JohnMc, and I approved this message.






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