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lisajvm
lisajvm 4/5/2010
1998 Nissan Altima SE 4Cyl2.4L - Engine
loud knocking by the valve cover not sure if it is a stuck lifter, timing chain or oil pump how do i figure out which
1 Answer
  • 5150
    5150 8/3/2010
    Use some Sea foam and that should help if its a stuck lifter or timing chain

    but if you suspect its the timing chain get it checked out. If it goes out and you try and start it after it goes out youll have a whloe lote more to worry about than just replacing the timing chain. Youll have bent valves lifters might not be right etc depending.


    Just try some sea foam and if that doesnt work try and post back ill help ive had this problem before as well
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