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low compression no starting issues.

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    low compression no starting issues.

    Let me fill you in on my issue.
    spark good-
    fuel good-
    sensors good-
    relays good-

    compression bad-

    dry test.
    1=120
    2=150
    3=75
    4=70

    after a little oil in cylinders
    1=120
    2=180
    3=120
    4=120

    I tried the 2nd cylinder again,and hit 150 after the first 180. "harbor freight compression tester"

    So I think the compression was so low because the motor was cold, but it is at least every cylinder sucks the same amount. "kind of"

    I think I need to remove the intake manifold next and test the resistance on the injectors and test the fuel pressure regulator. Can I test the regulator, or do I just replace it?
    How can I tell if my ECU works correctly? Maybe that is what I need???

    What would you guys check?
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