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Thread: ckp timing vortec 5.7

  1. #1
    Junior Member
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    Default ckp timing vortec 5.7

    how do i check my timing?
    i know i need to be +or- 3 degrees, but how do i check it?

  2. #2
    Lifetime Member MICK's Avatar
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    Default Hummm

    Find in the Scan tool the pid: Camshaft Position Retard (Vortec).

    Log this pid and read it's data.

    You must be at certain operating conditions, like warm engine ect.

    I think you need to set it at a certain engine RPM.

    Check it out while you drive and you will soon see if it is out and by how much.

    I think this is what your after?

    Cheers

    Mick
    Rev it up, Drop the clutch, See what happens?

  3. #3
    Lifetime Member hquick's Avatar
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    Default

    You need to log GM.CMPRET.
    Warm the car up.
    Start the scan tool and rev to +1200 rpm.
    Check reading (needs to be +/- 2.0
    If not correct...loosen dizzy hold down bolt, turn slightly and rev again to 1200rpm and check.
    Everytime you change the setting you need to rev to 1200+ to acquire a new reading.
    Once set...tighten hold down bolt....DONE!
    Howard

    YOU ONLY NEED TWO TOOLS IN LIFE - WD-40 AND DUCT TAPE. IF IT DOESN'T
    MOVE AND SHOULD, USE THE WD-40. IF IT SHOULDN'T MOVE AND DOES, USE THE
    DUCT TAPE.
    IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.


    98 K1500 'HOLDEN' Suburban.
    Custom Whipple SC, Mercruiser Marine intake, 0411 PCM, 4L80E w/shift kit

  4. #4
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    Default

    thanks guys but i still cant find the file GM.CMPRET in my pid list

  5. #5
    Lifetime Member hquick's Avatar
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    Default

    Which version of EFILive are you running?
    You might need to update if you haven't already
    Look under 'conditions' in the PID list.
    Howard

    YOU ONLY NEED TWO TOOLS IN LIFE - WD-40 AND DUCT TAPE. IF IT DOESN'T
    MOVE AND SHOULD, USE THE WD-40. IF IT SHOULDN'T MOVE AND DOES, USE THE
    DUCT TAPE.
    IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.


    98 K1500 'HOLDEN' Suburban.
    Custom Whipple SC, Mercruiser Marine intake, 0411 PCM, 4L80E w/shift kit

  6. #6
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    Default

    i have v7.4

  7. #7
    Lifetime Member hquick's Avatar
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    Default

    I think it was added to 7.5. I have 7.5.3 and it's in there
    Howard

    YOU ONLY NEED TWO TOOLS IN LIFE - WD-40 AND DUCT TAPE. IF IT DOESN'T
    MOVE AND SHOULD, USE THE WD-40. IF IT SHOULDN'T MOVE AND DOES, USE THE
    DUCT TAPE.
    IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.


    98 K1500 'HOLDEN' Suburban.
    Custom Whipple SC, Mercruiser Marine intake, 0411 PCM, 4L80E w/shift kit

  8. #8
    Junior Member
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    Default

    downloading now thanks again

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