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Thread: just won't fire up.

  1. #16

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    Did a compression test yesterday readings are as follows
    1 and 4 around 60, 2 and 3 aprox 10. Any Ideas what would
    cause these readings?

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    sounds to me like you timing is way off. when was the last time the timing was done?

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    Quote Originally Posted by TheEvilZX2 View Post
    sounds to me like you timing is way off. when was the last time the timing was done?

    New belt and pullies 6 months ago. When I pulled the valve
    cover it looked like the cams are in time. but will recheck again.
    I still welcome any other possibilities.

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    did you check that the tensioner didnt fail? not just up at the cam gears?

    the way i see it is if it was driving fine as you said and instantly died, whether or not you have spark or fuel or a code for the temp, those compression numbers would be the first thing you should be looking at. odds are far more likely your compression issue is timing related instead all of your rings wearing out...all at the same time...in an instant

  5. #20

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    Quote Originally Posted by SQUEKSTER View Post
    Did a compression test yesterday readings are as follows....2 and 3 aprox 10.
    Adjacent cylinders with low readings may mean bad head gasket between the two cylinders.

    IIRCC, these engines are hard to do an accurate compression test because of the VCT, but all cylinders should show about the same numbers, albeit low when compared to a non VCT engine.


    1 running Ford out of 5 isn't bad, right?

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  6. #21

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    Quote Originally Posted by ZX2.0 View Post
    Adjacent cylinders with low readings may mean bad head gasket between the two cylinders.

    IIRCC, these engines are hard to do an accurate compression test because of the VCT, but all cylinders should show about the same numbers, albeit low when compared to a non VCT engine.


    1 running Ford out of 5 isn't bad, right?

    "The bitterness of poor quality remains long after the sweetness of low price" -Ben Franklin
    Yes the fact that the two adjacent cylinders read low would indicate a break between them. But how do we
    account for the 60 psi readings on 1 and 4.

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    Quote Originally Posted by TheEvilZX2 View Post
    did you check that the tensioner didnt fail? not just up at the cam gears?

    the way i see it is if it was driving fine as you said and instantly died, whether or not you have spark or fuel or a code for the temp, those compression numbers would be the first thing you should be looking at. odds are far more likely your compression issue is timing related instead all of your rings wearing out...all at the same time...in an instant
    That is what I was thinking from the the beginning but when I checked the cam timing it was correct. I don't get it .

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    Timing sounds off. How did you find TDC?

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    its yer neutral safety switch, top of the tranny..jump it by connecting the thick red wire to the thick red and black wire

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    OP said the engine turns over and he has spark, so I think that rules out the safety switch.

    Squekster-check the end of the dipstick for milky oil

    1 running Ford out of 5 isn't bad, right?

    "The bitterness of poor quality remains long after the sweetness of low price" -Ben Franklin

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    Well it has been a while but the head is off and what I see is the 1 and 4 cylinders look very good
    no scoring and no ridge on top of the cylinder. Now the 2 and 3 cylinders is a different story. I have deep vertical
    scoring in each cylinder directly across from each other. In other words the scoring on the #2 cylinder is
    on the right side and the # 3 cylinder is scored on the left side. Any Ideas what would cause this? The head gasket
    looks good.

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