burning oil?

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Dec 1, 2010 | 01:20 PM

lost7

Thread Starter

Newbie

Joined: Dec 2010

Posts: 8

Likes: 0

From: Norfolk, VA

Year: 1994

Model: Cherokee

burning oil?

my xj is burning oil fast and smoking what could the problem be?

Dec 1, 2010 | 01:44 PM

TrekkerJmm

"CF Moderator"

Joined: Sep 2008

Posts: 3,045

Likes: 3

From: N.J. Shore Area

Year: 1994

Model: Cherokee

Engine: l6 HO

Quote:

Originally Posted by lost7

my xjis burning oil fast and smoking what could the problem be?

Hi and welcome to CF from Tj... Sounds like the rings are going. Does it smoke all the time or when you start it up for the first time? It could be valve seals if the latter. How many miles on it...Tj

Dec 1, 2010 | 02:20 PM

tjwalker

CF Veteran

Joined: Nov 2010

Posts: 5,840

Likes: 117

From: In the middle of Minnesota!

Year: 1999

Model: Cherokee

Engine: 4.0

A compression test with a gauge on all cylinders wouldn't be a bad idea. Wet/dry best.

The spec. compression for the 4.0 is 120-150 psi, with no more than a 30 psi variation between cylinders.

Dec 1, 2010 | 02:32 PM

lost7

Thread Starter

Newbie

Joined: Dec 2010

Posts: 8

Likes: 0

From: Norfolk, VA

Year: 1994

Model: Cherokee

it smokes the whole time. it has 226,000 miles on it without a rebuild

Dec 1, 2010 | 03:10 PM

1991Jeep_Man

CF Veteran

Joined: Oct 2009

Posts: 2,867

Likes: 16

From: Fauquier County, Virginia

Year: 1991

Model: Cherokee

Engine: I-6 4.0 HO

Quote:

Originally Posted by lost7

it smokes the whole time. it has 226,000 miles on it without a rebuild

Then that's prob your rings.

Dec 1, 2010 | 03:13 PM

freegdr

CF Veteran

Joined: Mar 2010

Posts: 47,923

Likes: 38

From: Broward County Fl.

Year: 1989 xj sport 2dr

Model: Cherokee

Engine: 12 hole bosch Injectors

rebuild or used motor that dont smoke aint much else

Dec 1, 2010 | 04:43 PM

tjwalker

CF Veteran

Joined: Nov 2010

Posts: 5,840

Likes: 117

From: In the middle of Minnesota!

Year: 1999

Model: Cherokee

Engine: 4.0

A salvage yard or craigslist engine is always an economical plug and play route to go.....

A rebuild or purchasing a remanufactured engine (while nice) is kind of spendy.