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Topic: ISM fuel pressure (Read 1527 times) previous topic - next topic

ISM fuel pressure

At idle my fuel pressure is 150 psi.
I think 25 psi is better.

The fuel pressure @ 150 is not stable, it fluctuates rapidly, plus or minus a 25 psi swing.

Fuel pump pressure regulator?
Fuel pump check valve?

Any suggestions?

Thx

Tim

 

Re: ISM fuel pressure

Reply #1
Cranking   25 psi
1200 RPM   120 psi
2100 RPM   150-180 psi