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What is an acceptable fuel pressure

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Old 04-21-2006, 12:27 AM
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What is an acceptable fuel pressure

My fuel pressure gauge shows 11-12 psi at idle and 6-7 at full throttle.
Stock LP.
What does everyone think?
Old 04-21-2006, 12:58 AM
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With my FASS system, I get 16-17 lbs of fuel pressure at idle. Not sure what it was before as I did gauges at the same time.
Old 04-21-2006, 06:00 AM
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Originally Posted by abbeyinc
My fuel pressure gauge shows 11-12 psi at idle and 6-7 at full throttle.
Stock LP.
What does everyone think?
Sounds like a stock system, mine runs 12-14 psi at idle, with a smarty and injectors I can drag mine down to 4 psi at WOT.
Old 04-21-2006, 06:32 AM
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Sounds like it's a little on the low side.
Borderline for now, but keep a careful eye on it, and start shopping for a replacement.

I see 15-16 @ idle & 9-10 at WOT.
Stock lift pump w/ Scotty's Smart Fuel System.
Old 04-21-2006, 08:35 AM
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Mine is about the same, can drop it down to 5psi at WOT, stock lift pump. ordered a Scotty fuel kit yesterday.
Old 04-21-2006, 09:52 AM
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Scotty's fuel kit will help a lot.

If you have 8psi @ wot, I'd say you're fine. A little below that is OK, just don't like it drop to 1 or 2 for any considerable amount of time.

jh
Old 04-22-2006, 02:00 PM
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fp

Originally Posted by abbeyinc
My fuel pressure gauge shows 11-12 psi at idle and 6-7 at full throttle.
Stock LP.
What does everyone think?
looks good to me
Old 04-22-2006, 02:21 PM
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When it gets to 4-5 lbs. it is time for action. OK till then.
Old 04-22-2006, 03:26 PM
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I know where you live! And I wouldn't hesitate to replace it asap!
Old 04-22-2006, 03:45 PM
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Yep,

Most FP gauges that you will find rated for diesel start showing the little red warning line right around 5psi. With that said 5psi was the limit a couple years ago, but I hear more and more folks saying that anything under 8psi will require attention rather soon.
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