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Old 06-25-2011, 08:07 PM   #1
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Excessive Oil Consumption and Ticking Sound

Hi everyone,

Just joined the forum and I already have a question. Let me know if I should have posted somewhere else. I recently bought a 99 Wrangler Sport 4.0 with 130k. Soon after I noticed a "ticking" sound more like a diesel. It sounds worse when cold but I can always here it. Two mechanics have listened (One removed all accesories and used sensors) and both are confident that it is the timing chain and it should be fixed but no real hurry.

Now I am noticing that it is consuming oil. I dont know if the two are related but this is what I have found so far and checked after searching these forums. It is using about 1/2 a quart in 500 miles, not leaking on the ground, cant find any spots on motor, Coolant is bright green and doesn't look contaminated. The air filter and box show no signs of oil. The front CCV elbow is clear and does have vacum. The rear CCV orifice is the 2.6mm with no blockage, however there is definately oil being drawn through it into the intake.

As soon as I found the oil consumption I assumed the worst and did a compression test. Manual says 120-150 psi, I get 165-175psi? Is high compression a problem? If so what can cause it? Is it possible that the high compression is somehow adding in pushing oil through the CCV and into the intake.

Sorry for the long post just trying to give you all the information.

Any ideas? or other things to check?

Thanks in advance.

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Old 06-25-2011, 09:30 PM   #2
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My 01 knocks, ticks and burns about a quart of oil between changes. I have piston slap until the engine warms up. That's getting up there in mileage and the 4.0 is in no way a "quiet" engine. I'm not sure about the high compression. Possible that the PO used thicker oil to hide the noises?

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Old 06-26-2011, 06:43 PM   #3
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Are u losing coolant..sure it's not the heads???
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Old 06-26-2011, 07:20 PM   #4
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Not loosing any coolant. Kind of baffled at how much oil it is using with no other symptoms, atleast nothing that I am noticing.
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Old 06-26-2011, 07:53 PM   #5
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Quote:
Originally Posted by kjeeper10
My 01 knocks, ticks and burns about a quart of oil between changes. I have piston slap until the engine warms up. That's getting up there in mileage and the 4.0 is in no way a "quiet" engine. I'm not sure about the high compression. Possible that the PO used thicker oil to hide the noises?
Hello?
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Old 06-26-2011, 08:31 PM   #6
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Old 06-26-2011, 09:08 PM   #7
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