TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
Sponsored by:
Sponsored by:

release fuel pressure

Thread Tools
 
Search this Thread
 
Old May 18, 2005 | 09:09 PM
  #1  
formula forever's Avatar
Thread Starter
Supreme Member
 
Joined: Dec 2004
Posts: 1,204
Likes: 0
From: chicago IL
Car: 91 formula
Engine: 350 tuned port. bolt ons
Transmission: 700r4
Axle/Gears: 3.73
release fuel pressure

If I release the fuel pressure on my TPI by pressing the valve down won't it shoot gas all over. I want to replace fuel filter. What would you do?
Reply
Old May 19, 2005 | 09:45 AM
  #2  
Tibo's Avatar
Supreme Member
20 Year Member
iTrader: (15)
 
Joined: Jun 2003
Posts: 5,028
Likes: 78
From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Best way is to take the gas cap off to relieve some pressure. Then just put a bucket under the car and work fast. I can do it in like 2-3 min.
Reply
Old May 19, 2005 | 11:42 AM
  #3  
firebirdjones's Avatar
Senior Member
 
Joined: Mar 2005
Posts: 519
Likes: 2
pressure

Yep, I just dove under there and removed the filter, and let the pressure bleed off there as I loosened the nut, no big deal. Gas in the arm pit feels pretty good too just turn your head so you don't get any in the face. Larry.
Reply
Old May 19, 2005 | 12:34 PM
  #4  
TheGreatJ's Avatar
Senior Member
 
Joined: Jun 2000
Posts: 998
Likes: 0
From: Tuscaloosa, AL
Car: 91Z, 91RS, '84 Jimmy
Engine: L98, 355, L98
Transmission: 700R, T56, 700R4
The easiest way to relieve fuel pressure is to pull the fuel pump fuse and then start the engine. It will run until 90% of the pressure is gone, then it will stall. You'll get a dribble when you loosen the filter but it won't spray in your eyes.
Reply
Old May 19, 2005 | 03:22 PM
  #5  
bm87ta's Avatar
Member
20 Year Member
iTrader: (5)
 
Joined: Jun 2003
Posts: 254
Likes: 0
From: menasha wi
Car: 87 TA
Engine: 305 tpi
Transmission: auto
yes, pull the fuse and the gas cap, and let it run till it dies, then try starting it up a couple of times, and your good to go. just remeber to use flare nut wrenches($7 about at harbor feight) and put lots of anti-sieze and the threads and about a 1/2inch after the threads on the pipe itself.

by the way i tried taking off the cap on the fuel rail and the thing was seized, anyone know where to get a replacement cap and valve?


and for the orignal Q no it shouldnt shoot everywhere, just make sure you leave the engine sit for a couple of minutes,chances are your injectors are old and leaky and that should bleed most of the pressure off

have fun!
BM

Last edited by bm87ta; May 19, 2005 at 03:24 PM.
Reply
Old May 19, 2005 | 03:28 PM
  #6  
formula forever's Avatar
Thread Starter
Supreme Member
 
Joined: Dec 2004
Posts: 1,204
Likes: 0
From: chicago IL
Car: 91 formula
Engine: 350 tuned port. bolt ons
Transmission: 700r4
Axle/Gears: 3.73
i hope it will losen because it is alittle rusted so i need flare wrenches. no problem
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
92camaroJoe
TBI
32
Jul 29, 2023 07:57 PM
R3500
Engine/Drivetrain/Suspension Wanted
1
Aug 17, 2015 12:16 PM
wayshegoes
Tech / General Engine
8
Aug 17, 2015 12:00 PM
92camaroJoe
Tech / General Engine
6
Aug 13, 2015 06:07 AM
Kaweh
TBI
3
Aug 9, 2015 02:54 PM




All times are GMT -5. The time now is 01:48 PM.