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Old 03-28-2010, 09:45 AM   #1
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Oil in Air Filter.... Is this a solution?

So over the past week I have done what I would consider a pretty complete tune up of my new 89 Wrangler.

Plugs
Wire
Rotor
Cap
Coil
Fuel Filter
Air Filter
Engine Oil
Tranny Fluid
Transfer Case Fluid
Diff Fluid
Flush Radiator


Well I noticed oil in the air filter, check the PVC valve and it does not appear to be stock and fits loosely in connecting hole.

What would stop a person from putting a valve cover breather there?

Thanks
Mike

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Old 03-28-2010, 10:02 AM   #2
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i think you can get oil in your air filter if the pcv valve is stuck open. take it off and clean it up, should lube it back up or get a new one i think they are like 10bux

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Old 03-28-2010, 10:03 AM   #3
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Stock 4 or 6 cyl. or something else?
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Old 03-28-2010, 10:54 AM   #4
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4.2L

I took the pvc valve out and it appears that all it is an elbow........... Am I looking at the right one?

Oil Cap-----> Hose that goes to intake------> Hose that goes to air cleaner


Mike
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Old 03-28-2010, 11:16 AM   #5
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The PCV is right behind the oil filler cap. Replace it, wipe out the air cleaner and see what happens. You are going to get some oil residue in there from the breather element that is located on the back of the air cleaner towards the firewall. There should be a plastic piece on there with a sponge-like element in it. That should be replaced also.
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Old 03-28-2010, 11:38 AM   #6
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Thanks KIK--

but the ........idoit (?) that owned this jeep before me but what appears to be a weber carb and a 4" x 6" moroso air breather on. The back tube runs into the bottom of the air cleaner and there is not foam.......


What do you think that is all about?
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Old 03-28-2010, 12:04 PM   #7
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if you replace your pcv and still have oil in filter you have blow by,where you have worn rings and your crank case getting pressurised,how many miles on your engingeneo
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Old 03-28-2010, 01:18 PM   #8
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I had this same problem. I had full compression in cylinders 2, 4, 6. Low compression in cylinders 1 and 5 and none in 3. I pulled the engine to replace the rings and when I went to take out piston 3, it slid out with no assistance. I had a huge grove down the cylinder wall. I continued to remove the rest of the pistons and all of the rings were broke. I brought it down to a place and they basically turned it into a short block for me boring it 40 over. I don't have any issues with it blowing oil into the filter any more, just working on the clutch.
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Old 03-28-2010, 01:19 PM   #9
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Originally Posted by jeepers creepers 89 View Post
Thanks KIK--

but the ........idoit (?) that owned this jeep before me but what appears to be a weber carb and a 4" x 6" moroso air breather on. The back tube runs into the bottom of the air cleaner and there is not foam.......


What do you think that is all about?
O'k, you don't have a stock set-up. On the TJ I had, the vent hose went right into the air box so unless you're getting alot of oil coming in, which would indicate an engine problem, I would leave it alone. Or, you can get a stock breather element which won't cost you anything and see if it will fit within the vent line. You might want to consider a larger diameter air cleaner.
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Old 01-08-2011, 11:56 PM   #10
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So I have the same problem. Pulled my plugs and they are dry and the proper color. Had gas in my oil so I changed it and replaced the filter. Then dropped in some Sea Foam. Haven't checked the air filter or box again but I'm already getting better power. Doesn't bog down like it was.

But I have an oil leak somewhere. Can the breather element be replaced with a cone filter?
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Old 01-09-2011, 01:58 PM   #11
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could be oil blow by.
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Old 01-11-2011, 03:41 PM   #12
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How much should having someone else replace the piston rings cost? And what else should be done while everything's opened up?
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Old 01-11-2011, 03:43 PM   #13
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And/or should I replace the 2.5 with a 4.0 instead? I know that means replacing the trans too but at this point, 22 years old and 182K miles (not necessarily cared for by previous owners) it may be cheaper.

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