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Old 05-07-2012, 07:04 PM
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fuel psi

what should a normal fuel psi be on these trucks min and max
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Old 05-07-2012, 07:16 PM
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I'd say 45 is a min, max maybe 70-75
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Old 05-08-2012, 06:50 AM
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so if mine is running but only pulling 15 psi, its a pretty safe bet its a bad fuel pump , right?
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Old 05-08-2012, 07:46 AM
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Quote:
Originally Posted by TOW RIG View Post
so if mine is running but only pulling 15 psi, its a pretty safe bet its a bad fuel pump , right?
Or fpr, or fpr screen, or fuel pick up assembly

I made my Samsung SGH-I997 send this.
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Old 05-08-2012, 09:04 AM
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With it that low I personally would not drive it until you found the issue or you'll be replacing injectors soon. When was the last time both fuel filters were replaced?
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Old 05-08-2012, 05:39 PM
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both? filters i feel stupid asking but where is the other one.
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Old 05-08-2012, 05:42 PM
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there's only one fuel filter on OBS. It's the in the engine valley.
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Old 05-08-2012, 05:43 PM
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also what cause it to differ on start up by 10 to 25 psi
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Old 05-08-2012, 05:44 PM
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i thought so but thought i was missing something
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Old 05-08-2012, 05:51 PM
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it's mechaincally driven pump off the cam so things can be sort of low when it's going off starter speed, also if your pump is bad it can give really lower pressures
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