Quote:
Originally Posted by runmikeyrun
. . Vacuum gauge at idle is reading about 14 (manifold vacuum) and the needle is bouncing. From what I’ve read it’s not just a low reading but it also means there is a problem with one or two cylinders and not all of them.
. . . I’m gonna have to do a compression test.
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Bouncing can be from leaking intake valves.
Compression test, yes.
Remove all the spark plugs so the engine can turn over easier, and block the throttle butterfly open too.
Oil on plug #4 could easily explain the blue smoke on that side.
>edit<
Have the valves been adjusted recently? Some of them may be too tight.
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