gasoline leak from under exhaust manifold?! - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 05-13-2011, 12:17 PM   #1
Newb
 
Join Date: May 2011
Posts: 8
gasoline leak from under exhaust manifold?!

Hey guys I need your help please....
I was driving my 01 Jeep Wrangler (4) and noticed the temp went up all the way to red. Stopped, noticed water leak from under the water pump. Replaced it and the termostat as well. No more water leaks but.....
now when starting the motor I noticed very significant gasoline (!!!???)leak from between headers and the exhaust manifold right in the front!!! I have never seen or heard about anything like that. Can any of you help me with diagnosing the problem?
By the way, There is no water in the oil or oil in the water, no white smoke from the pipe, water IS "bubbling" a little in the radiator and there IS significant loss of power, especialy on higher gears. Any suggestions, please?

gregbel is offline   Quote Quick Reply
Old 05-13-2011, 12:21 PM   #2
Jeeper
 
solman's Avatar
 
Join Date: Apr 2010
Location: Southern PA
Posts: 1,670
Check to see if it is coming from the fuel rail or injectors. Its pretty unlikely that it is coming from the manifold. I could be wrong though.

solman is offline   Quote Quick Reply
Old 05-13-2011, 12:28 PM   #3
Newb
 
Join Date: May 2011
Posts: 8
..... and how do I do that?
gregbel is offline   Quote Quick Reply
Old 05-13-2011, 12:40 PM   #4
Newb
 
Join Date: May 2011
Posts: 8
I can clearly see that it is leaking from UNDER the manifold.
gregbel is offline   Quote Quick Reply
Old 05-13-2011, 03:44 PM   #5
Jeeper
 
Shelby427's Avatar
 
Join Date: May 2011
Location: Lakeland FL and Hooversville PA
Posts: 2,131
Fuel delivery is via the rail to the injector to the manifold to the cylinder.

I guess a stuck injector could be flooding the cylinder with gas.

Is the engine missing? Like a dead cylinder.


As for the other part bubbling in the rad is not a good thing. Sounds like a compression leak into the cooling system. If it's a blown head gasket it will do this. And if it just started the crack in the gasket may be small enough to have it leaking compression and not enough coolant has leaked into the oil yet to discolor it.

Easy way to tell if you got a leak into the cooling system. Remove the belt, thermostat housing and thermostat. Start it up. If you see bubbles forming in the thermostat opening, you got troubles.
__________________
97 Sahara, 74 Renegade, 72 CJ5, 55 Willy's (the Beast) Boss 302, 6:34 gearing, Bose 901 speakers.
God I miss that Jeep. Forgot the kinda Jeep, 80 SX4.
Shelby427 is offline   Quote Quick Reply
Old 05-13-2011, 04:13 PM   #6
Newb
 
Join Date: May 2011
Posts: 8
These are great answers and suggestions. Thank you for your help. I will do as advised and report to you later. I spoke with a friend of mine, a mechanic who suggested pretty much the same as you did but also warned me about the danger of the jeep catching on fire since the leak is so significant and is dripping directly on the exhaust pipes below. Thank you again, I will let you know what the solution is over the weekend.
gregbel is offline   Quote Quick Reply
Old 05-13-2011, 04:24 PM   #7
Jeeper
 
Shelby427's Avatar
 
Join Date: May 2011
Location: Lakeland FL and Hooversville PA
Posts: 2,131
A big fire extinguisher should be near by while you are checking. Remember gas fumes are heavier then air. Be careful as your Mech stated, watch out for not only the Jeep setting off the gas but other items too.

And if not already the Jeep should be sitting outside away from everything, just in case.
__________________
97 Sahara, 74 Renegade, 72 CJ5, 55 Willy's (the Beast) Boss 302, 6:34 gearing, Bose 901 speakers.
God I miss that Jeep. Forgot the kinda Jeep, 80 SX4.
Shelby427 is offline   Quote Quick Reply
Old 05-13-2011, 04:37 PM   #8
Founder, ThumbJeeps

WF Supporting Member
 
sevenservices's Avatar
 
Join Date: Sep 2009
Location: Mid-Michigan/Thumb
Posts: 3,952
I would inspect everything around the water pump. Think of the series of events;

1. had water leak
2. water pump was replaced
3. now has gas leak, re-check what was done on number 2.

Is there any parts of the fuel line that could have been damaged while replacing the water pump? Or, is there any part of the fuel line that is rubber? It may have gotten to hot and melted a hole in it???

Just speculating, without looking at it, it is hard to tell. You said its leaking under the mainfold but is it in the general area under the mainfold or is there actually a crack there somewhere that it is spewing out of?

And, like these guys said the fumes are heavier than air and can cause pockets of highly combustable fumes. If you have a regular housefan, set it up to keep the air moving while your working on it.
__________________
-Chris
Founder, ThumbJeeps


1994 Wrangler YJ I6 4.0 H/O Auto 3 spd. 4" RC (33x12.5) (15x8) 3:54 Gears
sevenservices is offline   Quote Quick Reply
Old 05-13-2011, 06:04 PM   #9
Newb
 
Join Date: May 2011
Posts: 8
I did do the basic and the obvious, meaning checked for visible cracks, broken, melted lines, tubes, hoses etc. Nothing there. The jeep is outside my garage in the open away from anything that could potentially catch on fire. Tomorrow I will take it apart looking for the source of the leak. I will keep you updated. I will also post some pictures. Thanks guys,
Gregor
gregbel is offline   Quote Quick Reply
Old 05-14-2011, 05:06 AM   #10
Jeeper
 
Join Date: Aug 2010
Posts: 466
when you over heated it the gasket went on it . replace your manifold gasket
hookuspookus is offline   Quote Quick Reply
Old 05-14-2011, 07:07 PM   #11
Newb
 
Join Date: May 2011
Posts: 8
I checked all injectors and replaced O-rings in all of them. Still leaking. Any ideas? Suggestions? What to do next? This is really frustrating, not to mention dangerous. By the way, I wanted to upload a little video but I am not sure how to do it. When I tried it told me that the file was invalid. It is recorded in 3GP. Can I download a vid from the computer?
Gregor
gregbel is offline   Quote Quick Reply
Old 05-14-2011, 07:25 PM   #12
Jeeper
 
Shelby427's Avatar
 
Join Date: May 2011
Location: Lakeland FL and Hooversville PA
Posts: 2,131
Gregor without seeing what is going on, the best we are going to do is guess.

Umm, try unplugging the connector on the injector closest to the leak. See if it changes the flow amount. It should shut off the fuel to that cylinder. If the leak stops I'd say you have a bad injector, and most likely you'll also need to replace the manifold gasket.
__________________
97 Sahara, 74 Renegade, 72 CJ5, 55 Willy's (the Beast) Boss 302, 6:34 gearing, Bose 901 speakers.
God I miss that Jeep. Forgot the kinda Jeep, 80 SX4.
Shelby427 is offline   Quote Quick Reply
Old 05-14-2011, 08:28 PM   #13
Newb
 
Join Date: May 2011
Posts: 8
Brilliant! Victory! Finally! When unplugged the leak stopped immediately! I guess then, it is a faulty injector and I need the gasket as well. You are great! I will get new injectors tommorrow. Thank you all very much for your help. Gregor
gregbel is offline   Quote Quick Reply
Old 05-14-2011, 08:43 PM   #14
Jeeper
 
Shelby427's Avatar
 
Join Date: May 2011
Location: Lakeland FL and Hooversville PA
Posts: 2,131
: thumb::t humb:
__________________
97 Sahara, 74 Renegade, 72 CJ5, 55 Willy's (the Beast) Boss 302, 6:34 gearing, Bose 901 speakers.
God I miss that Jeep. Forgot the kinda Jeep, 80 SX4.
Shelby427 is offline   Quote Quick Reply
Old 05-15-2011, 12:38 PM   #15
Jeeper
 
Join Date: Aug 2010
Posts: 466
Quote:
Originally Posted by shelby427 View Post
gregor without seeing what is going on, the best we are going to do is guess.

Umm, try unplugging the connector on the injector closest to the leak. See if it changes the flow amount. It should shut off the fuel to that cylinder. If the leak stops i'd say you have a bad injector, and most likely you'll also need to replace the manifold gasket.
good call !
hookuspookus is offline   Quote Quick Reply
Old 05-15-2011, 01:34 PM   #16
Jeeper
 
Shelby427's Avatar
 
Join Date: May 2011
Location: Lakeland FL and Hooversville PA
Posts: 2,131
Something else that may be wise. Change the oil too!!!!!

That much fuel dumping into the cylinder might have saturated the crankcase with gas and thinned out oil isn't a good thing.
__________________
97 Sahara, 74 Renegade, 72 CJ5, 55 Willy's (the Beast) Boss 302, 6:34 gearing, Bose 901 speakers.
God I miss that Jeep. Forgot the kinda Jeep, 80 SX4.
Shelby427 is offline   Quote Quick Reply
Old 05-16-2011, 11:30 AM   #17
Newb
 
Join Date: May 2011
Posts: 8
thank you all, again.

gregbel is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Exhaust manifold leak - TJ 2.5 jeffedmo TJ Tech Forum 21 09-25-2014 06:58 PM
1991 - 1999 Jeep Wrangler Stainless Steel Exhaust Manifold & Gasket Kit for 4.0L 1ATony Vendor Spotlight! Great Deals for Members. 4 12-17-2012 04:00 PM
Exhaust manifold leak TjTheo TJ Tech Forum 9 06-07-2010 09:10 PM
Leaky Exhaust manifold AKWrangler TJ Tech Forum 1 03-29-2010 11:20 AM
Exhaust Manifold Question jamesdeanblvd TJ Tech Forum 7 07-26-2009 11:57 PM



Download our Mobile App

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 09:26 PM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC