Bad lifters, what happens? (not a tick question)

Posted by highpsi93tsi, Jun 1, 2007
Cylinder Head & Short Block - 4G63 cams, valvetrain, pistons, rods, stroker kits, 6-bolt swaps, hybrids, etc. Read this Forum's Strict Guidelines.

  1. highpsi93tsi

    highpsi93tsi Proven Member

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    , Ontario_Canada
    If your Timing belt is still as tight as It was when replaced 2 yrs ago, then why upon start-up does it sound like someone wants out of my valvecover with a hammer? It sounds like VIOLENT lifter clatter(even after letting car sit 24hrs it still did it on start-up and with RPMs). Looked under VC and no damage/things flying around. I know to check the timing marks etc but I really think its a botched lifter, how do I go about checking them? Thankyou in advance!!
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  2. GVR4592

    GVR4592 Proven Member

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    Check the timing marks first.
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  3. dherron

    dherron Proven Member

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    i had the same problem and my intake valves were touching my pistons. Just ever so slightly. still not sure what the problem was i got new lifters valves, none were bent, springs and the head machined and my problem went away. Alot of money but took care of it all.
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  4. highpsi93tsi

    highpsi93tsi Proven Member

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    Thanks guys, lets say the timing is fine. How do I check for a bad lifter from looking at them w/ VC off? Thanks again.
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  5. fourreGsixty3

    fourreGsixty3 Proven Member

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    You can pull them out( remove rocker's), and take a paper clip, and stick it down the whole in the top of the lifter( used to get oil to the rocker's), with it in you should be able to depress the lifter's all the way. If they don't go down then they need to be replaced.
    #5
  6. steel_3d

    steel_3d Proven Member

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    I try to wiggle the rockers, push down on them. That would show if a lifter is not holding pressure. Of course about half the lifters are compressed by the lobes at any one time, so you're not learning much about those.
    #6
  7. Defiant

    Defiant DSM Wiseman

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    Timing can jump without the belt tension being visibly changed. Inspect the entire belt for damaged or missing teeth.
    #7

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