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    peterbutzer's Avatar
    peterbutzer Posts: 1, Reputation: 1
    New Member

    Aug 26, 2014, 10:17 PM
    1991 corolla noise at cam gear side of valve cover, increases as car warms up
    High metallic noise. Used stethoscope. Not anything drive belt related. Loudest at far end of valve cover near cam gear. Made this noise for over a year/5k miles. Anyone out there have this noise?
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member

    Aug 27, 2014, 05:08 AM
    Camshafts are the last on the oil train and, usually, the first to go when lubrication fails. The engine may be sludged-up. If you think that's the case, try Auto-RX or start using full-synthetic Pennzoil Platinum 5W-30. Shell claims it will remove 66% of the sludge in an engine, after using it once. If this doesn't help, remove the valve cover and check things out.

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