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compression test S90-V90 1998

posted by  chilliwack on  Wed Feb 25 15:59 CST 2009
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last visit: Sat Oct 11 07:54 CST 2014
[RELATED]

How do I do a compression test on 98 s90 Thanks in advance








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    compression test S90-V90 1998

    uid 11021's pic
    posted by  dewfpo on  Thu Feb 26 09:20 CST 2009
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    last visit: Thu Oct 23 18:34 CST 2014
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    Pull the fuel pump relay, pull all 6 plugs, block the throttle open, crank the engine until the pulses no longer move the gauge upward. A warm engine will give you better readings if you can. If you get low readings, a few drops of oil in the cylinder may boost readings if the rings are worn. A leakdown test (with compressed air) can tell you if your valves are leaking, if you have no compression at all in all 6 pots, then check for a broken timing belt and associated bent valves. If you have zero compression in only a few cylinders, then you may be dealing with 'lawnmower' syndrome where the lifters have collapsed due to very short running cycles.

    DEWFPO
    --
    1998 S90 077,400 and 1995 964 154,100








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      compression test S90-V90 1998

      posted by  chilliwack on  Thu Feb 26 15:14 CST 2009
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      last visit: Sat Oct 11 07:54 CST 2014
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      Thanks for info isnt there a plug under hood drivers side where relays are where I supply 12 volts to male terminal and it will be a remote starter?








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        compression test S90-V90 1998

        uid 11021's pic
        posted by  dewfpo on  Fri Feb 27 04:15 CST 2009
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        last visit: Thu Oct 23 18:34 CST 2014
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        I don't know, I have a screw in compression tester so I've been able to sit in the car and crank it for at least 6 pumps on the gauge.

        DEWFPO
        --
        1998 S90 077,400 and 1995 964 154,100







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