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FLuxuating Fuel pressure??

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Old

Oct 12, 2003 | 01:54 AM

#1

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Junior Member

Joined: Jun 2001

Posts: 32

Likes: 0

From: Orwigsburg, PA US

FLuxuating Fuel pressure??

I put a HSr on my GTA and Ford #24 injectors...I fire her up and the fuel pressure is at like 38 at idle...and when I rev it it goes up and down....shouldn't it be steady?? and why would it move?? possible vacuum problem?

Old

Oct 12, 2003 | 01:56 PM

#2

Supreme Member

Joined: May 2000

Posts: 2,963

Likes: 3

Car: 1982 Z28

Engine: LS1

Transmission: T56

If you have vacuum plumbed to the fuel pressure regulator, this is normal behavior. Disconnect and plug the vacuum hose and the fuel pressure should be rock steady.

Old

Oct 14, 2003 | 10:50 PM

#3

Junior Member

Joined: Feb 2002

Posts: 59

Likes: 0

From: Brooksville

Car: 1987 Formula

Engine: 383

Transmission: T56

Some adjustable fuel pressure regulators can cause the same sysmptom as well. If you have one, pop the old one on and see if it still moves.

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