Date: Tue, 21 Nov 2000 15:06:42 -0000 From: "Alan Buckingham" <alan_buckinghamnopsamreeinternet.co.uk> Subject: Re: Engine test on a 900 T16
You can isolate whether it is the bores by pouring some oil down the spark plug hole and rechecking compression. If it brings the comression up considerably then the cause is the bores. However, I'd suspect valves or head because bores last a long time on Saabs and all four would probably show a low compression. Symptoms of blown c/h sometimes include loss of water/bubbling of water, water in the oil and oil in the water. Valves do burn, but not that often. Alan. "John Griffin" <johnnopsamfinphoto.u-net.com> wrote in message news:B6409BEE.439E%johnnopsamfinphoto.u-net.com... > My 900t16 has low compression on 3 cylinders (1-9.6bar,2-8bar,3-7.5bar and > 4-7bar)mpg has gone down but it does not use any oil between changes, it > idles smoothly and pulls in all gears with no flat spots. Is there any test, > without removing the head, that will determine if it's the bores/rings that > are worn, the valves that are leaking or a gasket problem. > > Regards > > John > > >
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