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Yet another compression question

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Redfrog, Jul 7, 2001.

  1. Redfrog

    Redfrog 1/2 ton status

    May 4, 2001
    Likes Received:
    I checked my compression today and came up with 120psi
    on all cylinders. which makes me sick seeing how it only has 10k on it. any way to my question if the cam timing is off would the compression be equal or would it vary? If the rockers and pushrods were too long (+ cam lift) could the valves not be closing all of the way affecting the compression equally. Or can anyone think of anything else to check? I am clueless on this so give me any advise you have.
    TIA BTW. the gauge is new.

    HEY Fords!!! how many flushes does it
    take to get rid of you

    POWERMAD 1/2 ton status

    Mar 4, 2001
    Likes Received:
    120 across the board is a good sign in a way.
    I like to see it around 150 or so.
    If the valve wasn't closing all the way there would be next to no compression.
    What kind of rebuild was done to the plant?
    How was the engine broken in?
    It almost sounds as if the rings didn't get seated properly.
    But as I stated the same #'s all the way is a good thing in that the plant is even on that part.

    my truck's not dirty, it's earth tone paint

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