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Fuel Pressure Longevity 1800 1973

posted by  jrk on  Tue Feb 26 18:47 CST 2002
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last visit: Fri Jun 29 16:17 CST 2001
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I have had trouble starting my car lately. In trouble shooting it,
I have found that the fuel pressue at the rail pops up to about 30PSI
when the fuel pump initially runs before cranking the engine and then immediately drops back to near zero when the pump stops. It pops back up to about 30PSI while the engine cranks and stays there when the engine is running.

Let's assume the 30PSI is normal (may be an inaccurate guage or I may need to adjust it a bit).

1. Should the pressure regulator maintain the pressure in the rail at about 28 PSI even when the pump is not running or is my regulator bad?

2. I have checked all the sensors and checked the function of the intake air bypass valve (controlled by the engine heat). They seem fine. I have to crank it 3-4 times to get it to start and even then, it does not run at the higher cold start RPM it used to (where-in as it warmed up, it dropped in speed as the by-pass valve closed down). Ideas?

jrk





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New Fuel Pressure Longevity [1800][1973]
posted by  jrk  on Tue Feb 26 18:47 CST 2002 >


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