LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

fuel pressure leakdown question

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Old Dec 16, 2004 | 01:20 PM
  #1  
old93z's Avatar
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From: waco,tx
fuel pressure leakdown question

i turned car to on position with pressure gauge on it. What is a reasonable amount of time to see a drop in fuel pressure. 5 psi in an hour??? or 10 psi in 15 minutes? Just need an idea

P.s. rail and injectors are up out of intake where i can see them and several to leak a little

This is the second time i've had gas in the oil and ate up bearings. i want this to be last rebuild
Old Dec 16, 2004 | 01:40 PM
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LPEdave's Avatar
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Joined: Oct 2001
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From: Folsom, CA, USA
Re: fuel pressure leakdown question

My car used to bleed off pressure at something like 10psi/day. I can't imagine that injectors that drip would be a good thing, but I can't say that I have watched my fuel rail at pressure with all the injectors exposed.

Dave
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