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

fuel pressure at 35 psi??????? i need help

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Old May 13, 2003 | 10:50 PM
  #16  
norcalstreet's Avatar
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From: Northern California
It's normal. Don't worry yourself.
Old May 14, 2003 | 05:59 AM
  #17  
Brent94Z's Avatar
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Re: correct update

Originally posted by ram air camaro
alright guys i checked the fuel pressure the correct way here it is:

at idle 36 psi
at idle without vac is at 46 psi

at full throttle in park 46 psi

slightly pressing the gas drops 2 psi, 35 0r 34 psi
By Fred's post above, looks normal to me.
Old May 14, 2003 | 02:28 PM
  #18  
ram air camaro's Avatar
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thanks guys, let the sprayin begin.
Old May 14, 2003 | 02:57 PM
  #19  
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Idle pressures look good with and without vacuum. But you can't check the WOT pressure in park.... The engine needs to be under max load, consuming the max fuel.... like 5,000+rpm at WOT on the road, not in your driveway in park.

Also, drive the car and jiggle the throttle... pressure should rise slightly as you move the throttle down.
Old May 14, 2003 | 08:16 PM
  #20  
ram air camaro's Avatar
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hey injunner let me check it with load at wide open throttle, and slightly moving the throttle. i'll be back with the results in a few minutes.
Old May 14, 2003 | 08:58 PM
  #21  
ram air camaro's Avatar
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alright here it goes

at full throttle went up to 43-46 psi (at 5,000 rpm)

slightly stepping on throttle actually stays the same like if it was on idle (36-7 psi)

at cruising speed 50 mph on drive which is at around 1800 rpm is at 37 psi.

also checked dropping down to 1st (on my A-4) and slightly stepping on the gas untill it went to 5,000 rpm it was at 37 psi.

so what do you think? thats as many ways i could think of checking.
Old May 14, 2003 | 09:00 PM
  #22  
ram air camaro's Avatar
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oh forgot to mention all of those tests up above was down on the road.
Old May 14, 2003 | 09:28 PM
  #23  
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From: Albuquerque,NM--5,600 feet above you sea-level cats
Like mentioned above, looks normal.
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