Question about 1999 BMW 323 Series

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Overheating and lifter tapping

Ok I was asked to look at this BMW and what i came across was after starting the car, it has a very loud lifter or upper end knock or tap really. So I changed the oil, the lady said somebody just did this but added so oil additive like ( gumout ) or something to that effect. BMW recomends only synthetic oil they added nonsynthetic. The oilpump pumps at .5 psi " BMW specs" . so need information on changing the oil pump on one and where to find a diagram would be great 2000 323i motor. The overheating I think is the thermostat but I also needed the specs on that as well if you can hepl that would be great.

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This engine is in a bad condition and the cylinder head will have to be remove and the lifter replaced. this engine overheated to far and when the cylinder head is off have the the head bolts threads replaced with hylicoils as this will pull out when installing the head.again

Posted on Jul 28, 2009


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SOURCE: lifter noise

If the engine runs good and has high mileage, it might be the timing chain guides that are worn out

Posted on Jun 26, 2008

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