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Yes white sweet smoke is bad. Coolant. You aren't using any? Hmmm hook a vacuum gauge up. Tee it off of any vacuum line after the throttlebody. It will tell you if your valves are adjusted properly among other things. Your compression is good and as long as the test was done all the same. throttle Always floored or always closed. You do have a new air cleaner in there right? Yes a new cat won't make you pass if it's not the problem.
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