Burning oil, badly - JeepForum.com

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post #1 of 17 Old 05-28-2013, 10:25 AM Thread Starter
DarkStarr
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Burning oil, badly

Ok my 03 Overland seems to be burning oil. Quite seemingly a ton actually. Something like 3 Qts in 1200 miles or so. No visible leaks, nothing under it when parked, no drips at all. I checked the radiator and the fluid seems to be the correct color no milkyness to it at all. I just don't know where it could be going since that seems like a ton to be burning. Any ideas on what it could be?

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post #2 of 17 Old 05-28-2013, 11:38 AM
ZB_WJ
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Any smoke from tailpipe?

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post #3 of 17 Old 05-28-2013, 03:45 PM
Jer-Bear
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Valve seals, piston rings, PCV valve, valve cover gaskets... All can be culprits combining.

/ 2002 WJ 4.7 H.O. / Flowmaster 50 SUV / Magnaflow Cats / Rocking that 2WD! /
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post #4 of 17 Old 05-28-2013, 03:58 PM Thread Starter
DarkStarr
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Quote:
Originally Posted by ZB_WJ View Post
Any smoke from tailpipe?
Yea, it seems like its burning it by the smoke but I was thinking that it would be a bit too much missing to only be burning it.
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post #5 of 17 Old 05-28-2013, 04:18 PM
car5car
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Rings are stuck. Check spark plugs.
Drain 2 quarts of oil and add ATF. Run engine(don't drive) 10 min around 2-3K RPM

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post #6 of 17 Old 05-29-2013, 08:17 AM Thread Starter
DarkStarr
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Quote:
Originally Posted by car5car View Post
Rings are stuck. Check spark plugs.
Drain 2 quarts of oil and add ATF. Run engine(don't drive) 10 min around 2-3K RPM
Sorry I don't know what you mean by "rings are stuck", what should I be checking the plugs for? They likely need a change, no idea when it was done. This is my first vehicle.
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post #7 of 17 Old 05-29-2013, 08:43 AM
Jer-Bear
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The pistons have metal "rings" around them to prevent oil from coming into the combustion chamber. But, these piston rings and get stuck directly to the piston from carbon or sludge build up. They can be broken lose with additives and things like that. Replacing them requires an engine rebuild, which is expensive.

/ 2002 WJ 4.7 H.O. / Flowmaster 50 SUV / Magnaflow Cats / Rocking that 2WD! /
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post #8 of 17 Old 05-29-2013, 08:47 AM Thread Starter
DarkStarr
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So uhh, would the advised method of adding ATF (I am assuming a couple quarts?) and running it as stated be safe? If so I may have to go get some oil, some ATF and some plugs.
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post #9 of 17 Old 05-29-2013, 08:47 AM
Jer-Bear
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Spark plugs can get burned oil on them from bad piston rings. Look up pictures.

/ 2002 WJ 4.7 H.O. / Flowmaster 50 SUV / Magnaflow Cats / Rocking that 2WD! /
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post #10 of 17 Old 05-29-2013, 11:33 AM Thread Starter
DarkStarr
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okay now my big question is how do I know if I do this that they're not stuck anymore?
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post #11 of 17 Old 05-29-2013, 12:01 PM
Jer-Bear
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Well, uh... I guess when you stop burning oil lol. Just keep your eyes on the oil level.

/ 2002 WJ 4.7 H.O. / Flowmaster 50 SUV / Magnaflow Cats / Rocking that 2WD! /
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post #12 of 17 Old 05-29-2013, 03:17 PM
CarlJH
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another thing that can cause high oil consumption is blocked breather pipes, it causes the pressure in the
crank case to get too high and pushes the oil up past the rings. start the engine with the oil filler cap off
and see how much fumes come out.
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post #13 of 17 Old 06-14-2013, 11:57 PM Thread Starter
DarkStarr
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Well, its still burning. Time to check in to some other stuff.
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post #14 of 17 Old 06-24-2013, 08:07 PM
Felix13
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For what it's worth, I was burning about a qt of oil every 800-1,000 miles. After a few rounds with the dealership as well as a a new PCV Valve, an "oil consumption test", Chrysler authorized under my life time warranty, a compression test and then they recommended replacing the heads. I just got it back today, so I do not know if it has corrected the problem.
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post #15 of 17 Old 06-25-2013, 01:15 AM
Jer-Bear
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And how exactly does replacing the heads aid in oil consumption friend?

/ 2002 WJ 4.7 H.O. / Flowmaster 50 SUV / Magnaflow Cats / Rocking that 2WD! /
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