Whats normal fuel pressure?
Thread Starter
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From: Apple Valley - So Cal
Whats normal fuel pressure? My car is showing around 38 when idling and under full throttle it shows about 44. Stays steady doesn't drop or go back and forth. I thought this sounded kind of low and so did the techs at work so I figured I would ask here. Any help is appreciated. Thanks
then 43.5 once you fire it up. Are you measuing with a mechanical gauge at
the fuel rail?
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Well, I guess relatively speaking... K... just, NM haha Trending Topics
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Still is going to be what the regulator regulates it to 
So unless it's adjustable and has been messed with, it'll still be the same. Now, if you tested the pressure PRE-regulator, you'd get whatever the pump puts out for PSI. That's not what you do though.
So unless it's adjustable and has been messed with, it'll still be the same. Now, if you tested the pressure PRE-regulator, you'd get whatever the pump puts out for PSI. That's not what you do though. LS1 Tech Stories
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Verdad Gallardo TECH Senior Member
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Thread Starter
Joined: Aug 2006
Posts: 1,458
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From: Apple Valley - So Cal
Ok, good. I thought it was low but since its normal i'm happy. Its on my 95 Z28. I was using a mechanical gauge and hooking it up to the fitting behind the intake manifold.
