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So i just replaced my BKR7E's for the fourth time in 3 months. Dealer claims to be oil catch can causing the problem, Anyone else foul out spark plugs with oil? I don't have much for mods other than the BKR7E, Oil Catch can, Catless DP and custom 2-1/2 Exhaust. Oil only makes it up the 1st cylinder spark plugs, which i don't understand. I think it's the valve stem seals as i had this problem with my mk4 Turbo Jetta, but it fouled out every plug as the cruze only 1.

Maybe next time i change i'll remove catch can? I don't see the catch can being the problem as i empty it almost twice a month.
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