Tech / General Engine Is your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!

Help! Leaking gas from fuel rail.

Thread Tools
 
Search this Thread
 
Old 05-10-2010, 09:02 PM
  #1  
Junior Member
Thread Starter
 
IROC-Z 383 TPI's Avatar
 
Join Date: Nov 2007
Location: Manhattan IL
Posts: 18
Likes: 0
Received 0 Likes on 0 Posts
Car: 1988 Iroc/ 84 Z28
Engine: 383 TPI/ 5.0 H.0.
Transmission: 700r4
Axle/Gears: Strange 3.73/ stock 3.73
Help! Leaking gas from fuel rail.

Im leaking gas from the passenger fuel rail toward the rear. Theres a threaded cap with a hole in it and when I start the car it sprays gas. Alot of gas. The thing that I cant figure out is why it doesnt happen every time. I took the cap off and theres an aluminum plug in there. I dont really know what to do. Any ideas??
Old 05-10-2010, 09:07 PM
  #2  
On Probation
 
Atilla the Fun's Avatar
 
Join Date: Oct 2008
Location: Northern Utah
Posts: 6,319
Likes: 0
Received 17 Likes on 17 Posts
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none
Re: Help! Leaking gas from fuel rail.

J.B. Weld
Old 05-10-2010, 09:08 PM
  #3  
Member
 
racethesunlive's Avatar
 
Join Date: Apr 2009
Location: Central NJ
Posts: 126
Likes: 0
Received 0 Likes on 0 Posts
Car: '92 Camaro
Engine: 350 TPI
Re: Help! Leaking gas from fuel rail.

At the end of the aluminum plug is a rubber o-ring that seals that end off, most likely the o-rings worn out and you have some gas getting by.
Old 05-10-2010, 09:11 PM
  #4  
Junior Member
Thread Starter
 
IROC-Z 383 TPI's Avatar
 
Join Date: Nov 2007
Location: Manhattan IL
Posts: 18
Likes: 0
Received 0 Likes on 0 Posts
Car: 1988 Iroc/ 84 Z28
Engine: 383 TPI/ 5.0 H.0.
Transmission: 700r4
Axle/Gears: Strange 3.73/ stock 3.73
Re: Help! Leaking gas from fuel rail.

Theres an o-ring that the aluminum plug sits on. I cant really see it because the fuel rail is still on the car. Any chance that could be bad? Can a replacement be found? I dont wanna just booger it up. If the o ring was bad wouldnt it leak all the time? When it leaks its like a supersoaker but then ill start it up later and it will be dry as a bone. Seems unlikely to go from those extremes
Old 05-10-2010, 09:19 PM
  #5  
Member
 
racethesunlive's Avatar
 
Join Date: Apr 2009
Location: Central NJ
Posts: 126
Likes: 0
Received 0 Likes on 0 Posts
Car: '92 Camaro
Engine: 350 TPI
Re: Help! Leaking gas from fuel rail.

I would depressurize the rail then check the o-ring and replace it if necessary, but I wouldn't use jbweld etc as if that doesn't work, then you've got a trashed fuel rail. I know because I tried jb weld after having a similar issue, although mine would ALWAYS leak fuel under pressure, and all i had to show for it was some jbwelded rail and an even higher pressure fuel leak...
Old 05-11-2010, 09:05 PM
  #6  
Junior Member
 
Hesstrck26's Avatar
 
Join Date: Mar 2010
Location: Anchorage AK
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Car: 1988 iroc z hard top/04 fast cummin
Engine: 5.7 350
Transmission: built 700r4
Axle/Gears: 2.77
Re: Help! Leaking gas from fuel rail.

buy a fuel rail or ing kit and rebuild it thats what i had to do
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
bryan623
TPI
7
03-22-2021 06:43 PM
Infested
Tech / General Engine
3
05-22-2018 11:56 PM
Andrew6.688
TPI
10
12-13-2015 10:59 AM
wayshegoes
Tech / General Engine
8
08-17-2015 12:00 PM



Quick Reply: Help! Leaking gas from fuel rail.



All times are GMT -5. The time now is 12:04 PM.