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Originally Posted by badron
BEST I could tell you is do a Com Test. At 100k you should be OK but testing is the only way to know for sure. They can come bad right from the factory.
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I don't understand what your saying, I fixed the problem and I'm just passing on the info to others, I know a lot of people have scrapped thier jeeps because of this. Its impossible to clean out the (ccv) old vacum hose, it should be replaced with a new one, but thanks anyway. Another thing I did was drill out the white plastic part of the old ccv hose that has the (or should have) the 2.6mm metering hole with a 7/64 drill making it about 2.8mm. This helps out an old engine a bit. I think drilling it to 3mm would be perfect but I don't have that size. I think the mistake most people make is they clean the ends of the hose out and blow it out a bit but down the line in the center of the hose , if there is any amount of carbon, they no longer have a 2.6mm hole needed to create the suction to keep the oil out of the air box. That stupid little ccv hose is about $45 bucks at the dealer, thats why I cut the old one at the very end and used the 1/4" fuel line for the rest of it.