• NAXJA is having its 18th annual March Membership Drive!!!
    Everyone who joins or renews during March will be entered into a drawing!
    More Information - Join/Renew
  • Welcome to the new NAXJA Forum! If your password does not work, please use "Forgot your password?" link on the log-in page. Please feel free to reach out to [email protected] if we can provide any assistance.

4.0 carnage...(no 56k)

FreemansXJ

NAXJA Forum User
Location
Spring Hill, Ks
Well.....I bought this 97 Cherokee for a very good price knowing that it needed some engine work. Best case scenario, it blew a head gasket...worst case, it needed a new engine. Can you guess which way it went...lol

Quick reference so you know why the damage occurred...kid before me overheated it and it started running very rough on him. The odometer shows 130k. Now onto the pics....

Beginning of the teardown...
100_1620.jpg


Plugs out...#6 looks a bit weak..LOL
100_1621.jpg


Intake and exhaust off....wahoo, no cracks..
100_1630.jpg


Head off...no obvious signs of damage...
100_1632.jpg


Continued.....

JOhn
 
On with the diagnosis.....

Those front 2 pistons look kind of funny....
100_1633.jpg


Front cylinder...
100_1634.jpg


2nd cylinder....
100_1635.jpg


I am going to send the head out and have it checked. If it is usable, I may just rebuild since I cannot find any low mileage 4.0's around here. Kind of impressed this thing still ran on 3 cylinders.

John
 
Back
Top