cylinder compression technical question. -
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back > Models > Jeep Cherokee & Comanche Forums > XJ Cherokee Technical Forum > cylinder compression technical question.

Jeep Wrangler Hurricane Flat Fender Flare Kits for 2007-208.8 Swap Kit w/ TRUSS for JeepsPoison spyder items @ oconee off road 706 534 9955

Unread 08-12-2002, 06:13 AM   #1
Registered User
Join Date: Apr 2002
Location: Ottawa, Canada
Posts: 125
cylinder compression technical question.

According to the haynes manual if cylinder 1 has low compression and the rest are o.k. then problem is likely a worn exhaust lobe on the cam shaft.
1988 Cherokee Laredo inline 6 4.0L 5 speed manual.
The question I have is this: Could I adjust the pushrods at the #1 cylinder to compensate for the wear on the exhaust lobe to give more range of motion to the cylinder?
Any ideas or fixes would be appreciated..

jaybyrd is offline   Reply With Quote
Unread 08-12-2002, 09:02 PM   #2
Registered User
2014 WK 
Join Date: Jul 2002
Location: Scranton, PA, USA
Posts: 195
Well, (I believe) the engine has overhead cams, so it wouldnt have a pushrod. But yes, you can. When I rebuilt the engine on a truck I play around with, I loosened the nuts, took the worm screws down to the thickness of an index card (at closed valve), and tightened the nuts back up, and it quieted the valve tapping too. I'm thinking of doing it on my Cherokee.
2014 Grand Cherokee Limited Hemi, Towing & Lux
1999 300M 198k
Previous: 1972 Benz 280SE 4.5, 1992 XJ Cherokee Laredo, 2006 Charger R/T
Tomguy is offline   Reply With Quote
Unread 08-13-2002, 09:11 PM   #3
Registered User
Join Date: Mar 2002
Location: Somerville, MA
Posts: 105
I have never opened my engine up but I know they sell pushrods for the 4.0.
'88 XJ 4.0L Rusty's cat back exhaust with Flowmaster
Flanz is offline   Reply With Quote
Unread 08-13-2002, 09:52 PM   #4
Registered User
Join Date: Apr 2002
Location: Texas
Posts: 214
4.0 is not an overhead cam engine, definitely has pushrods.
The new series of engines in the Grand Cherokee are overhead cam, but not the 4.0.
arpy is offline   Reply With Quote
Thread Tools

Suggested Threads

Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. is not in any way associated with Jeep or the Chrysler Corp.