What can cause the fuel pressure to go down when accelerating?

Reply Subscribe

Thread Tools

Search this Thread

Oct 10, 2002 | 11:23 PM

86Tra/maro

Thread Starter

Member

Joined: Feb 2001

Posts: 406

Likes: 0

From: Newark,NJ The state where racing on I 78 rules.

What can cause the fuel pressure to go down when accelerating?

Whats up everyone?
I have a problem with my fuel pressure going down while reving the engine at idle! Any ideas on what would cause this?
njdaewoo

Oct 11, 2002 | 02:14 AM

Redliner

Member

Joined: Nov 2001

Posts: 149

Likes: 0

From: Shreveport, LA, USA

Car: Tahoe

Engine: 350

Transmission: T56

yeah, the injectors are letting off the built up pressure when you rev your engine

Oct 11, 2002 | 02:18 AM

9OFirebirdV6

Junior Member

Joined: Oct 2002

Posts: 46

Likes: 0

How many PSI is it dropping? In my chilton it says a 8-10psi drop during accelleration is normal. but it could be a weak fuel pump, or dirty fuel filter.

Oct 11, 2002 | 08:08 PM

86Tra/maro

Thread Starter

Member

Joined: Feb 2001

Posts: 406

Likes: 0

From: Newark,NJ The state where racing on I 78 rules.

Its dropping down in the 25-30 lbs range. When it goes down in the 25lbs range the motor starts to run rough. The rough running motor starts at aroung 3000 rpm & continues all the way to redline. I have another post that goes into this further, please read !!
njdaewoo