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Thread: Low compression along all cylinders.... Yay

  1. #1
    Join Date
    Sep 2016
    Location
    NWGA
    Posts
    2
    My Cars
    03 r53

    Low compression along all cylinders.... Yay

    Hey all. To keep this story short I took this 02 mini S with 110k on trade for some work for a co-worker of mine. it has been sitting for 3 years. It was explained to me that it did over heat a couple times, but would cool back down. Im sure he missed some details being it sat for so long. But eventually it went into a limp mode/ ran bad and then would not restart once he got home.

    Ive done the troubleshooting that I knew to do which includes:Replaced the battery, checked grounds, pulled some engine codes (ill list them below), Fuel pressure is at 55psi, have good spark, getting a pulse from the injectors with the noids (though i only had 3v with a multimeter). Now the compression #1 30psi #2 70psi #3 60psi #4 50psi. It sounds like I am getting blow back, which is unfortunately to familiar to when i blew my head gasket on the chevelle not pulling enough timing back.

    Things I'll try tomorrow include a wet compression test and a leak down. then most likely taking the head off...
    small details, appears to be no water in the system and it builds pressure when I turn the car over, has a broken dipstick but i was able to snake it out and the oil looks brown and smells accordingly...

    here are the codes in order that I pulled them before clearing them to see if any would come back and NONE did. i know there are duplicates but thats how they read.

    p0302
    p0313
    p1229
    p1692
    p0302
    p0128
    p0313
    p1229
    p0500
    p1692


    Just trying to see if theres anything I should do in the morning but I wanted to post this up before I dive in for any tips or shared knowledge. I'm gonna drain the oil and water (if any) from the lower hose to see what I find.

    Thanks so much for reading all this btw
    Last edited by PLD1; 09-25-2016 at 10:08 AM.

  2. #2
    Join Date
    Sep 2016
    Location
    NWGA
    Posts
    2
    My Cars
    03 r53


    So this happened... Any theories to why both sides would go out like this? Any way to check for water pump failure without the motor running?

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