Have any of you heard of this? - JeepForum.com
Search  
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 JeepForum.com > General Technical Discussions > Engines & Drivetrain > Have any of you heard of this?

*VOTE NOW Help Metalcloak Giveaway an XJ Suspension*Stainless Steel Door Hinge PinsPoly Door Hinge Bushings

Reply
Unread 07-03-2012, 09:24 PM   #1
flyjeeptings
Registered User
1990 XJ Cherokee 
 
Join Date: Jan 2012
Posts: 31
Have any of you heard of this?

Was talking to a mechanic over the weekend, and we were talking about blow by on my 90 xj 4.0 and he was saying put tranny fluid in the combustion chamber to soak the rings over night? That should help the rings free up alittle more. Does it actually work?

flyjeeptings is offline   Reply With Quote
Unread 07-04-2012, 12:19 AM   #2
jeepdaddy2000
Web Wheeler
 
jeepdaddy2000's Avatar
1971 CJ5 
 
Join Date: Jan 2002
Location: Eagle Point Oregon
Posts: 6,101
Anything is possible, however, in my experience, blowby is caused by engine wear. The only real way to eliminate it is through cylinder work.
jeepdaddy2000 is offline   Reply With Quote
Unread 07-04-2012, 01:14 AM   #3
KMD
Registered User
1976 CJ7 
 
Join Date: Apr 2009
Location: Modesto, California
Posts: 1,282
put too much in and forget to crank it with the plugs out and you will need a new motor anyways. Can not compress liquid. I agree time to do some cylinder work.
__________________
Locked and Loaded 4x4 Club
KMD is offline   Reply With Quote
Unread 07-04-2012, 01:39 AM   #4
jnicewan
Registered User
1995 ZJ 
 
Join Date: Dec 2010
Location: Norman, OK
Posts: 2,006
His theory might work but its based on if the rings are carboned up and stuck. ATF is a pretty decent solvent and its loaded with detergents. Chemicals like B12 chemtool and seafoam might actually work better. If the blow by is due to worn cylinders or rings you probably wont help a thing other than cleaning the tops of the pistons.

If you have tranny fluid laying around then go ahead and try it since its a free. Get an oil squirt can or turkey baster or something to squirt the oil into the spark plug holes, do all of them. After letting it sit overnight be sure to crank the engine over for a few seconds before installing the spark plugs to blow the oil out and you might throw a couple rags over the holes to save a mess. Put the plugs back in and drive it around for awhile. If it seems like it worked then try it again. If you want to try a more aggressive cleaner, get the B12 or seafoam. You might consider an oil change after youre done because whatever chemical you poured in, some of it might have creeped into the crankcase, the little amount of ATF would be ok, but you might not want an unknown amount of B12 or seafoam in you crankcase/oil.
jnicewan is offline   Reply With Quote
Unread 07-04-2012, 09:17 AM   #5
flyjeeptings
Registered User
1990 XJ Cherokee 
 
Join Date: Jan 2012
Posts: 31
Thanks guys I tried it. N I didn't cover the plug holes an got oil allll over my neighbors driveway. But it's all good now! it smoked like crazy for an hour! I can't see my engine being worn that much. It's only got 120 k and maintenance every 3-4 thousand k.
flyjeeptings is offline   Reply With Quote
Unread 07-04-2012, 10:34 AM   #6
KMD
Registered User
1976 CJ7 
 
Join Date: Apr 2009
Location: Modesto, California
Posts: 1,282
LMFAO at oil on neighbors driveway Win!
__________________
Locked and Loaded 4x4 Club
KMD is offline   Reply With Quote
Unread 07-04-2012, 12:39 PM   #7
flyjeeptings
Registered User
1990 XJ Cherokee 
 
Join Date: Jan 2012
Posts: 31
At least it's funy for u guys. It's hurting my wallet and back! 2 bottles of soap, and **** ton of everything else and about 10 L of degreaser I think i got it
flyjeeptings is offline   Reply With Quote
Unread 07-04-2012, 01:03 PM   #8
KMD
Registered User
1976 CJ7 
 
Join Date: Apr 2009
Location: Modesto, California
Posts: 1,282
Quote:
Originally Posted by flyjeeptings View Post
At least it's funy for u guys. It's hurting my wallet and back! 2 bottles of soap, and **** ton of everything else and about 10 L of degreaser I think i got it
That sucks. Try some cheap soda pop. The acid can help eat the oil. Also purple power works great too.
__________________
Locked and Loaded 4x4 Club
KMD is offline   Reply With Quote
Unread 07-04-2012, 01:09 PM   #9
flyjeeptings
Registered User
1990 XJ Cherokee 
 
Join Date: Jan 2012
Posts: 31
I got it all! Thanks for the help tho. Now ima go rip around the streets in the jeep!
flyjeeptings is offline   Reply With Quote




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