Massive oil leaks - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 01-26-2010, 06:24 AM   #1
Jeeper
 
Join Date: Aug 2009
Location: Trainer, PA
Posts: 40
Send a message via AIM to 19yj89
Massive oil leaks

Ok so...We knew the yj had a few oil leaks which we've been attempting to fix. Well last week on the way to work the pressure dropped below 25. Got there in one piece with no damage BUT the oil did not even register on the dipstick. I read if it was the rear main that the clutch would be slipping. How true is this? As for the other leaks...anyone have any ideas why it would be blowing out of my pcv and distributor (where it goes into the block) like a geyser? We've tried adding a o-ring to the distributor and it doesn't gush like it did but it does still leak. Also changed out the pcv grommet with a elbow that sits in the cover tighter but that also still leaks a little. If it helps any it's a 2.5L 5 speed.

19yj89 is offline   Quote
Old 01-26-2010, 10:20 AM   #2
Jeeper
 
tlrrob1000's Avatar
 
Join Date: Jul 2009
Location: Pain is a gift...Fear is not an option!
Posts: 786
Images: 23
Sounds like you have excessive blow by (crank case pressure) Usually caused by cylinder compression escaping into the crank case via worn rings, valve guides, PCV not opening correctly and so on. How is the power and does it smoke at all?

__________________
No Bad Days!
tlrrob1000 is offline   Quote
Old 01-26-2010, 10:24 AM   #3
Jeeper
 
89PBR96's Avatar
 
Join Date: Aug 2009
Location: Central Il
Posts: 1,839
Sounds like a bad set of rings or a valve is stuck / bad
__________________
2003 Excursion 4x4 Short Bus
1984 Dodge 250 4x4 4 Inch lift 36's
1994 STX Ranger 4x4 6 Inch lift 33's or 35's
1998 TJ 3.5 Inch lift 33's or 35's
89PBR96 is offline   Quote
Old 01-26-2010, 11:08 AM   #4
Jeeper
 
Join Date: Aug 2009
Location: Trainer, PA
Posts: 40
Send a message via AIM to 19yj89
power is as can be expected for a 4 cly. She actually does run pretty good aside from the oil issue. Never have any problems in traffic with the exception to a hill or 2 and when it's massively windy outside. Smoking....on occasion due to a not so great throttle body. I did notice white smoke the other day after hubby put an o-ring on the distributor but he said that may be because he might not have the timing exact from when he took out the distributor. But the white smoke is only there for a few seconds then goes away.

Edit: Anyone know what the compression should normally be on the 2.5? Hubby just told me he has a compression tester but he doesn't know what it should normally be.
19yj89 is offline   Quote
Old 01-26-2010, 01:19 PM   #5
Jeeper
 
Join Date: Jan 2010
Location: Las Cruces, NM
Posts: 2,303
If the PCV valve is stuck it can cause crankcase pressure build-up, so can a cracked piston. The quickest check is the PCV valve, the ball should be free.
Cracked piston should be causing a skip but a pressure test will show it.
Oil from the rear main seal could migrate to the clutch..
Garyk is offline   Quote
Old 01-26-2010, 01:32 PM   #6
Jeeper
 
Join Date: Aug 2009
Location: Trainer, PA
Posts: 40
Send a message via AIM to 19yj89
Well pcv is new and working...guess next thing would be a pressure/compression test.
19yj89 is offline   Quote
Old 01-26-2010, 06:50 PM   #7
Jeeper

WF Supporting Member
 
scott howard's Avatar
 
Join Date: Dec 2009
Location: wichita falls texas
Posts: 1,035
Yep do the compression test and just be prepared to rebuild or replace the motor .
scott howard is offline   Quote
Old 01-26-2010, 11:18 PM   #8
Jeeper
 
tlrrob1000's Avatar
 
Join Date: Jul 2009
Location: Pain is a gift...Fear is not an option!
Posts: 786
Images: 23
Off the top of my head you should be around 100-140 psi on the third hit. Shouldn't have a big difference between cylinders no more than 30 psi between them. Remember to remove all spark plugs when you do the test.

__________________
No Bad Days!
tlrrob1000 is offline   Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
How prevalent are the roof leaks funglenn JK General Discussion Forum 41 10-14-2012 08:32 AM
Water Leaks Ivey TJ Tech Forum 9 11-21-2009 02:42 PM
Vacuum Leaks - REDUB innocent bystander TJ Tech Forum 2 04-20-2009 08:42 PM
OK - the Roof Leaks on the Unlimited - What will fix it? kkola JK General Discussion Forum 3 11-23-2008 07:34 AM
air leaks with 2 piece hardtop...please help! wranglerchick TJ Tech Forum 9 10-24-2006 08:13 PM



Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 02:04 AM.


User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC