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Message: <blockquote data-quote="96GTRagTop" data-source="post: 192850" data-attributes="member: 9640">well i did the swap today and we fired it up and everything was ok. No CEL..idled fine. We let it sit running for about 20 minutes, couldn't see and leaks, and took it out for a spin. By the time we got back we noticed it cmoking a little, couldn't find any leaks though. Took it out for another test drive after the smoke seemed to clear and came back in and noticed a little smoking again. Not as bad as the first itme though. While checking the car again for leaks we noticed the CEL fturn on. We scanned it and it said cylinder 4 is misfiring.The smoke was coming from the rear of the intake manifold. It seamed almost like it was ocming from behind. The crack in my intake was right above the 4th cylinder. We never pulled the plugs to clean them or blow them out. Just the wire boot and the injector ports.</blockquote>