LOW compression

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  • Bryson
    E30 Fanatic
    • Oct 2003
    • 1490
    #16
    Originally posted by e30Matt
    Originally posted by shields
    Took plug2 out. Attached gauge to where plug would go. started engine. turned off. And read the gauge.

    I didn't do it. I watched my mechanic do it.
    Wow.

    Just... wow.

    Compression tests are done by removing the fuel pump relay, disconnecting the ignition system (removing plug wires/coil wire) and cranking the engine over while the gauge is threaded into the cylinder to be tested.
    wtf just pull all the plugs

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      • VtwinVince
        Noobie
        • Oct 2004
        • 26
        #17
        Ah, where in BC are you and what mechanic was that?

          Comment

          • e30Matt
            R3V Elite
            • Dec 2003
            • 5077
            #18
            Originally posted by Bryson
            Originally posted by e30Matt
            Originally posted by shields
            Took plug2 out. Attached gauge to where plug would go. started engine. turned off. And read the gauge.

            I didn't do it. I watched my mechanic do it.
            Wow.

            Just... wow.

            Compression tests are done by removing the fuel pump relay, disconnecting the ignition system (removing plug wires/coil wire) and cranking the engine over while the gauge is threaded into the cylinder to be tested.
            wtf just pull all the plugs
            Granted, but if for any reason there's any residual fuel in the cylinder it would now go spraying all over the place when you crank the car over. You leave the plugs in, it gets pushed out the exhaust ports. :)

            "See, we're adding a little something to this month's sales contest. As you all know, first prize is a Cadillac Eldorado. Anyone wanna see second prize? Second prize is a set of steak knives. Third prize is you're fired."

              Comment

              • UNHCLL
                R3V OG
                • Oct 2003
                • 8789
                #19
                Originally posted by e30Matt
                Originally posted by Bryson
                Originally posted by e30Matt
                Originally posted by shields
                Took plug2 out. Attached gauge to where plug would go. started engine. turned off. And read the gauge.

                I didn't do it. I watched my mechanic do it.
                Wow.

                Just... wow.

                Compression tests are done by removing the fuel pump relay, disconnecting the ignition system (removing plug wires/coil wire) and cranking the engine over while the gauge is threaded into the cylinder to be tested.
                wtf just pull all the plugs
                Granted, but if for any reason there's any residual fuel in the cylinder it would now go spraying all over the place when you crank the car over. You leave the plugs in, it gets pushed out the exhaust ports. :)
                wtf are you talking about.

                I've done numerous CC's on my engine with the fuel supply still connected and all the plugs pulled out. No fuel comes out of the cyls.

                Nice attempt though. ;)
                Below the radar...

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