fuel injector leak - Third Generation F-Body Message Boards


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

fuel injector leak

Reply
 
Thread Tools Search this Thread
Old 03-17-2017, 03:19 PM   #1
Member
Thread Starter
 
Join Date: Oct 2016
Posts: 104

fuel injector leak

i just noticed some gas coming out of the space where the injector and intake touch.

what should i do?
truckguy is offline vBGarage Page   Reply With Quote
Old 03-17-2017, 03:41 PM   #2
Moderator
 
Abubaca's Avatar
 
Join Date: Feb 2001
Location: JAMESTOWN, NC
Posts: 5,657
Car: 1989 Iroc
Engine: 383 TPI
Transmission: TKO600
Axle/Gears: 3.27


Re: fuel injector leak

It's very possible if they're original injectors that the O-Rings are worn out. Are they aftermarket? Do you swap em recently? Maybe the fuel rails aren't quite tightened down all the way?
Abubaca is offline vBGarage Page   Reply With Quote
Old 03-17-2017, 03:47 PM   #3
Member
Thread Starter
 
Join Date: Oct 2016
Posts: 104

Re: fuel injector leak

Quote:
Originally Posted by Abubaca View Post
It's very possible if they're original injectors that the O-Rings are worn out. Are they aftermarket? Do you swap em recently? Maybe the fuel rails aren't quite tightened down all the way?

hey

pretty sure they are original, i have not put aftermarket ones the last guy put the motor in so i wouldnt know ...but they look stock.

im going to do a fuel pressure test soon. heres a picture to show where its leaking from theres two injectors. it was hard to take a picture of where its leaking from it looks like the whole thing is just wet.

can these leaky injectors cause gas to get into the block ,
the motor oil smells like gas and its making me worried... why would gas be in the block ?
Attached Thumbnails
fuel injector leak-dscn2067.jpg   fuel injector leak-dscn2068.jpg  
truckguy is offline vBGarage Page   Reply With Quote
Old 03-18-2017, 03:34 PM   #4
Sponsor
 
southbay08's Avatar
 
Join Date: Nov 2008
Location: Rockville Centre, NY
Posts: 1,216

Re: fuel injector leak

are you sure it's not leaking from the top orings and leaking down?
southbay08 is offline vBGarage Page   Reply With Quote
Old 03-18-2017, 09:40 PM   #5
Senior Member
iTrader: (2)
 
Join Date: May 2013
Location: Milford, CT
Posts: 878
Car: 86 Trans Am
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 2.77 9 bolt

Re: fuel injector leak

one of the o rings has failed.

no matter which side of the injector its coming from, you're gonna have to remove the fuel rail+injectors to fix the issue with either new o rings or new injectors from southbay(highly recommend).
TylerSteez is offline vBGarage Page   Reply With Quote
Old 03-18-2017, 11:43 PM   #6
Member
Thread Starter
 
Join Date: Oct 2016
Posts: 104

Re: fuel injector leak

Quote:
Originally Posted by TylerSteez View Post
one of the o rings has failed.

no matter which side of the injector its coming from, you're gonna have to remove the fuel rail+injectors to fix the issue with either new o rings or new injectors from southbay(highly recommend).


ughh.. more money i have to spend.
im trying to sell the vehicle anyways so ill go with ...Orings and fuel injector cleaner.

what are your thoughts on injector cleaner?
also i NEED this question answered, could leaky O-rings cause fuel to get into the block?

theres gas smell in the motor oil im scared to even run the motor i dont want the gasoline to wash the oil off the block walls
...my theory is the injector's "spray" is not getting burned cause its not a proper mist and its just squirting it on the pistons thus dripping its way into the block.

Last edited by truckguy; 03-18-2017 at 11:47 PM.
truckguy is offline vBGarage Page   Reply With Quote
Old 03-18-2017, 11:46 PM   #7
Senior Member
iTrader: (2)
 
Join Date: May 2013
Location: Milford, CT
Posts: 878
Car: 86 Trans Am
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 2.77 9 bolt

Re: fuel injector leak

The stuff they sell at the counter at Autozone? waste of money..
TylerSteez is offline vBGarage Page   Reply With Quote
Old 03-19-2017, 10:04 AM   #8
Sponsor
 
southbay08's Avatar
 
Join Date: Nov 2008
Location: Rockville Centre, NY
Posts: 1,216

Re: fuel injector leak

Leaky orings will not cause fuel to get into the block. It sounds like you might have one or more injectors leaking and flooding the engine in order to get fuel in the crank case.
southbay08 is offline vBGarage Page   Reply With Quote
Old 03-19-2017, 12:10 PM   #9
Sponsor
iTrader: (77)
 
Tuned Performance's Avatar
 
Join Date: Dec 2004
Location: Mile High Country !!!
Posts: 8,150
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt


Re: fuel injector leak

Quote:
Originally Posted by southbay08 View Post
Leaky orings will not cause fuel to get into the block. It sounds like you might have one or more injectors leaking and flooding the engine in order to get fuel in the crank case.
Tuned Performance is offline vBGarage Page   Reply With Quote
Old 03-19-2017, 03:10 PM   #10
Member
Thread Starter
 
Join Date: Oct 2016
Posts: 104

Re: fuel injector leak

Quote:
Originally Posted by TylerSteez View Post
The stuff they sell at the counter at Autozone? waste of money..

hahaha , yeah thats the injector cleaner im talking about.
i have to buy from auto parts stores alot since i cant ever find stuff online. especially for my older chevy. The only places i know is JEGGS and Summit but they seemed over priced. idk... i guess ill just buy new injectors.

Last edited by truckguy; 03-19-2017 at 03:15 PM.
truckguy is offline vBGarage Page   Reply With Quote
Old 03-19-2017, 03:12 PM   #11
Member
Thread Starter
 
Join Date: Oct 2016
Posts: 104

Re: fuel injector leak

Quote:
Originally Posted by southbay08 View Post
Leaky orings will not cause fuel to get into the block. It sounds like you might have one or more injectors leaking and flooding the engine in order to get fuel in the crank case.

ok, so they could be leaking while the motor is not running? im trying to get an idea of whats going on here. Is there some tests i can run to pinpoint the gas leak into my engine?

im definitely going to drain the oil before driving.
do you have any tips on how to clean on the gas from the block? should i just drain it out a few times before driving it?
truckguy is offline vBGarage Page   Reply With Quote
Old 03-19-2017, 03:22 PM   #12
Senior Member
iTrader: (2)
 
Join Date: May 2013
Location: Milford, CT
Posts: 878
Car: 86 Trans Am
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 2.77 9 bolt

Re: fuel injector leak

fix the issue, Change the oil, Drive it around for a couple hundred miles and then change it again until you're feeling confident.
TylerSteez is offline vBGarage Page   Reply With Quote
Reply


Go Back   Third Generation F-Body Message Boards >

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 03:47 AM.


All content copyright 1997 - 2014 ThirdGen.org. All rights reserved. No part of this website may be reproduced without the expressed, documented, and written consent of ThirdGen.org's Administrators.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: