my engine caught fire...

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Dec 27, 2010 | 11:46 PM

#31

XJx3

Member

Joined: Dec 2010

Posts: 243

Likes: 0

From: Central Indiana

Year: 1987,1990,1992

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by BlackXJ

That is a possibility, but all the XJ headers crack including mine and ive never seen it smoke because of it. Sounds like you just found another problem

Welcome to XJ world

lol, I have 3 4.0's and ALL of them have cracked headers, even my spares are cracked. It's a habit of theirs so don't worry a lot about that. Weld it up and it will be fine. I still have two to weld up.

Dec 28, 2010 | 10:29 AM

#32

Gee oh Dee

CF Veteran

Joined: Sep 2010

Posts: 21,168

Likes: 5

From: Milwaukee, WI

Year: 1987

Engine: Check

Quote:

Originally Posted by 92Laredo4x4_4L

Finally got it back from my mechanic, who gave me the following diagnosis: When I placed the Jeep in 4wd and back to 2wd, it never came out of 4wd. When I took it to 60mph, I caused alot of pressure within my differential, because my differential is going bad, and the fluid spit up and out via my differential vent tube, which is located behind my power steering fill canister. There's a dry fluid stain on the fire-resistant coating under my hood right where the fluid was spitting out. He cleaned my engine, and told me not to put it in 4wd anymore until I decide I want to change out my front differential.

And he did this for no charge. Sweet deal. Thanks to all of you for your troubleshooting advice.

Interesting. I find this hard to believe, though.

Dec 28, 2010 | 11:02 AM

#33

4.0cherokee

Senior Member

Joined: Apr 2009

Posts: 925

Likes: 0

From: Durant,Oklahoma

Year: 1999

Model: Cherokee

Engine: 4.0 HO

I really hope that your tcase is alright. Just something to think about before you want to go offroad or depend upon it and realize that it no longer puts power to the front tires.

Dec 28, 2010 | 12:11 PM

#34

92Laredo4x4_4L

Thread Starter

Newbie

Joined: Dec 2010

Posts: 9

Likes: 0

From: Winter Haven, FL

Year: 1992

Model: Cherokee

Engine: 4.0 I6 MPI

Trust me, it was hard to believe, myself. It actually drives fine now. He cleaned and brushed the entire engine so he could find the leak, and he found it to be a spray coming from that vent tube. He said it only happened because I was driving it hard in low gear.

There's no more leak, and no more smoke - most likely because he cleaned the fluids off of the engine. And I was wrong earlier when I said the smoke was coming from the headers - I'm sure now that the smoke was coming from the previously sprayed fluids on hot parts.

I will just make sure not to put it in 4wd until I check the t-case and replace my front differential!