I began my rebuild when I did a compression test and noticed I had poor compression in cylinders 2-6 (about 142 psi, the bottom of the service limit). Cylinder 1 head 160 psi. A leakdown test showed leakage into each adjacent cylinder. Of course my engine also had the oil consumption problem (1 quart every 1000 miles) that every M54 engine has, which is caused by the oil rings which wear down prematurely (the M52TU used different oil rings which did not have this problem). There was also coolant loss, which I didn't measure precisely.
To see all the videos in the #m54rebuild series: • M54 Engine Rebuild Pro...
To view all the specs and torques for BMW M54/M52TU engines: goo.gl/jLvcgR
Make sure to check out the common repair steps video if you are unfamiliar with that: • BMW 330i 325i E46 Comm...
Other videos you should watch if you are planning to change your head gasket or rebuild your engine are:
Oil Filter Housing Gasket Replace: • BMW 330i 325i E46 Oil ...
Intake Manifold Removal: • BMW 330i 325i E46 CCV ...
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28 сен 2024