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Help with a 1973 P1800ES rough running engine/no power 1800 1973

posted by  Chris Mullet on  Wed Sep 30 07:10 CST 2020
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last visit: Fri Oct 24 09:08 CST 2014
[RELATED]

Whale,
It sounds like somebody cranked the fuel pressure down in an attempt to correct an over-rich condition. My first suspect would be a failed manifold pressure sensor. Disconnect it’s hose from the intake manifold and suck on it to see if the MAP sensor diaphragm is leaking and not holding a vacuum. You have to suck, suck, suck on the hose to pull the diaphragm down. When you release the hose from your mouth you should be able to hear the diaphragm slide back home.






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New 1 Help with a 1973 P1800ES rough running engine/no power [1800][1973]
posted by  LBC P1800ES  on Sun Aug 16 14:27 CST 2020 >


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