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Oil in air filter box, compression test. 200 1976

posted by  mikan on  Tue Jul 13 08:25 CST 2004
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last visit: Mon Jul 31 13:44 CST 2000
[RELATED]

Mark,

The final compression was:
1 - 170
2 - 170
3 - 180
4 - 180

The instructions say that exceeding the max can mean that carbon is built up in the cylinders. I'm wondering if this is not the case - plugs 3 and 4 sometimes have a light coating of oil on the gasket where they seal against the head. It doesn't seem to be dripping down from the valve cover, though.

This all came about because the car idles rough, and neither I nor several mechanics have been able to find the problem. I know rough idle can be about 20 different things, so I'm just taking it one at a time. Do you have any thoughts on the oil in the filter box? Thanks. Carl.






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