Didn't know carb cleaner was so bad. Won't use it anymore. Had the problem before I sprayed it, so no rag to blame. <img src="/forums/images/graemlins/smile.gif" alt="" /> I did wonder if chipmunks or squirrels were causing mischief though. The little buggers love leaving acorns under the hood. Didn't have a chance to check the timing belt and will be out of town for a few days. I'm sure I'll be writing again soon though. Thanks.