How do I identify "bad" engines in oil consuming 07-08 JK jeeps?
09-09-2011, 05:31 AM
#21
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Originally Posted by Yankee
Ya, thinking the cats might eat up the oil, until they fail.
09-09-2011, 05:51 AM
#22
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Yeah, the 2-stage cats on the JK burn off the oil at high temperatures so you don't see much smoke at the tailpipe like in the "old days". Usually after JK motors are replaced or rebuilt due to high oil consumption, the O2 sensors and cats usually fail and have to be replaced due to the damage the burning oil does to them.
09-09-2011, 06:23 AM
#23
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Why is everything blamed on mexicans, bad enough we are to blame for bringing crap loads of drugs through the border, its always a racial thing......im kidding i can say it cuz im mexican right? I bought an 08 jk 4dr with 40k miles n have had no oil issues. Maybe it would be good to get poll going of year and tag of the engine n consumtion or normal, unless it had been done? I hope no one gets affended by the mexican joke lol
09-09-2011, 06:29 AM
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09-10-2011, 06:21 AM
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09-10-2011, 07:15 AM
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Originally Posted by red97xj
What about at cold start up? If you rev it to 2-3,000 rpm, do you see blue smoke? Anyone else?
09-10-2011, 07:27 AM
#27
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If there is true smoke on cold start-up, it's most likely oil getting by the valve stem seals. It would be visible before the cats get hot enough to burn it off.
09-10-2011, 07:31 AM
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Originally Posted by ronjenx
The normal "smoke" on cold start-up is water vapor.
If there is true smoke on cold start-up, it's most likely oil getting by the valve stem seals. It would be visible before the cats get hot enough to burn it off.
If there is true smoke on cold start-up, it's most likely oil getting by the valve stem seals. It would be visible before the cats get hot enough to burn it off.
01-28-2012, 10:24 AM
#29
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Originally Posted by jktoy
Mine is fine. It burns about a half a quart every couple thousand miles. And it's an 08 with 84000 miles. The only problem I have is with it jumping out of first.
01-28-2012, 11:30 AM
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country of origin
If anyone still has the window sticker from their jeep when it was new, it will say country of origin for the engine and transmission. Mine is an 08 2dr sahara auto and say's United States for both. I belive this means that both were made in this country. If someone has a country of origin for the engine made in Mexico post it up.