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International Automotive Technicians Network
Re: When do you check for mechanical problems?
Posted to Technical Discussion Forum on 5/5/2018 1 Reply

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Had a scan tool on a vehicle couple weeks ago MAF was going low, high, low, high at idle. Hmmm put vacuum gauge on it. Needle bounce all over the place. Checked comp. #1 zero pulled valve cover intak... Login to read more.

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