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Re: Compression test (archive)
[ Follow Ups ] [ 3-series (E30) Message Board ] [ Msg. Board FAQ ]
Posted by BB on February 20, 2000 at 10:31:23:

In Reply to: Compression test posted by AJ on February 20, 2000 at 09:35:01:

: Can anyone tell me on the right way of doing the compression test and fuel pressure test? For compression test, do I have to take out all the plugs at once ? Do I have to take off the fuel pump relay? Bentley doesnt seems to give sufficient tips.

: Any input is highly appreciated.
: TQ

AJ:

Pull all your plugs first, it will be much easier on your battery and starter motor allowing your engine to crank at the proper speed. It is also a good idea to pull the fuel relay (located in the fuse box) when doing the compression check.

I always do compression checks twice; once with the engine stone cold and with the engine at operating temperature.



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