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post #1 of (permalink) Old 12-08-2002, 06:16 PM
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please help 89 wrangler

I have an 89 wrangler with the 4.2L, in the last two weeks it has been blow in about 3 quarts of oil out onto the engine, it is doing in it about a 2 day period. I have know idea what is going on or what is causing it. Any ideas or theories would be greatly appreciated. thanks
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post #2 of (permalink) Old 12-08-2002, 06:22 PM
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Re: please help 89 wrangler

More Info please... where is the source of the oil coming from? Check PCV valve... do a good search and maybe we can help... [img]images/graemlins/smirk.gif[/img]
post #3 of (permalink) Old 12-08-2002, 06:40 PM
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Re: please help 89 wrangler

Have you checked:

a. The dipstick tube for cracks?
b. The passenger side motor mount for failure?
c. A loose Oil filter.
d. Failing oil filter seal.

If you've got oil swewing out either oil dipstick tube and the PVC, or anywhere on the engine...... then you've got some problems. Pressrure seeks it's own vent... and the dipstick tube and breather is the easiest place to vent. When this happens it takes oil with it.

Overpressurization can occur from a pinhole in a pistion or bad rings and the action of the pistion and crank movement.

Checked to see that the cylinders are holding compression.

Other probables:

1. Bad rings, real bad rings pressurizing the crankcase.
2. Pin hole in a piston pressurizing the crankcase.
3. Burned intake vavle and a bent stem pressurizing the crankcase.
4 Cracked head.

Remember "blow-by" goes both ways.

Of course then there's the simple things... the oil capacity has been exceeded.. or you overfilled the oil level...or there's gas/water/coolant in the oil to raise the level (but I'd think you'd notice this).
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post #4 of (permalink) Old 12-09-2002, 12:22 AM
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Re: please help 89 wrangler


One more possibility. If you have oil on the passenger side of the oil pan, going down to the starter then it maybe a bad seal at the distributor... Well, it happened to me and it took me a couples hours to find it!!! [img]images/graemlins/confused.gif[/img]
Good luck...
post #5 of (permalink) Old 12-11-2002, 05:33 PM
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Re: please help 89 wrangler

Thanks for the ideas, I have been out of town. I hope maybe it might be something little, every week lately it seems to be something new. It is getting very frusturating. I have checked the pcv system it seems to be working correctly. There is another place on the back manfold, it has a line that connect to the air filter, whatever goes there was missing when I bought the jeep, got any ideas what might go there. thanks
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