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  1. #1
    Member Since
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    2001Proton 1432, ex 2001 Dragon Green Mica 0168 (RIP May 2017)
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    Here are the inital results from another member that had a bad valve. He's in the UK so not sure if the measurements are comparable, but it's the only one I remember seeing recently.

    1 = 190
    2 = 170
    3 = 180
    4 = 0
    5 = 170
    6 = 165


    Guess which cylinder had the bad valve...

    The workshop manual list the desired compression at 14.0 Kg/cm2. So to convert that to psi you simply multiply by 14.223 and get 199 psi.

    Looks like you may have a gauge issue, or you're gonna need some rings.

    Hope this helps...
    Last edited by Mile High VX : 06/12/2010 at 10:33 AM
    Live, Love, Forgive and Never Give Up

  2. #2
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    I did the compression test on a cold engine and the manual says to have the engine at normal operating temps before testing. I guess I need to warm up the engine and try it again. I just can't figure out the knock.

  3. #3
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    Exclamation Check this before you go any further! :)

    SilverBullet75
    Formerly: '01 Ebony VXSTLTH
    Now: '08 Saab 9-7x Aero 6.0L

  4. #4
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    I may go ahead and do that, heck I am into it this far. I did download the manual and follow the compression testing procedure. The numbers came back much better:
    205 210

    200 200

    195 205
    front

  5. #5
    Member Since
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    2001Proton 1432, ex 2001 Dragon Green Mica 0168 (RIP May 2017)
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    Quote Originally Posted by Buffy View Post
    I may go ahead and do that, heck I am into it this far. I did download the manual and follow the compression testing procedure. The numbers came back much better:
    205 210

    200 200

    195 205
    front
    That's what I'm talkin' 'bout!


  6. #6
    Member Since
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    The wife made and interesting observation. While we were doing the compression that the engine didn't knock when we were turning it over. I'll keep digging into it tomorrow and see if I can make some more progress.

  7. #7
    Member Since
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    One thing I didn't mention from uuesterday was when I first took the timing cover off and checked the timing belt, it had a lot of play in it but after turning the motor over a few times the belt is now tight. Now I have all the covers off and here are where my timing marks are:

    Left Bank (drivers side)



    Right Bank (passenger side)



    Crank Pulley



    The belt has some play in it now. I believe I have my marks in place to start removing the timing belt. Would like to hear from someone before I take the next step.

    Thanks!

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