2001 Boxster S Engine Noise

[Wilson01S]

Well before I took the engine out I decided I better take the cam cover off for bank 1-3 to inspect.....glad I did.

Upon removal of the cam cover I immediately noticed a tremendous oil build up. It seems like this side of the engine was running a little hotter due to lack of lubrication. I am unsure if it has a clogged oil passage, or just the oil was so gummed up in the oil passages that it caused this side to run warmer. Anyway I checked the lifters for this side and sure enough two of them (one more than the other) could be collapsed almost by hand with a socket extension. I pumped them and dirt and oil came out that did not look healthy.

The cam cover for the 4-6 bank had maybe a slight discoloration. The underside was mostly a nice aluminum finish with maybe a slight golden hue- nothing I would call abnormal.

Now look at the cover for 1-3 and tell me what you think....

[BYprodriver]

Wow that is nasty! I would replace all those lifters too. Be sure to clean & blow out the oil passages with compressed air.

[Wilson01S]

After a thorough cleaning of the cam cover, and the entire top of the cylinder head, cleaning of oil passages, installation of new lifters on the passenger and drivers side, replacement of the cam-to-cam chain pads and fresh mobil 1 15w50

the noise is still there.

I took a new video...about 3/4 of the way through I held it at 1800rpm and you can hear the noise begin to skip around and become random.

also note that for about 1 minute the noise went away again, and gradually came back.


2001 Boxster S knock - YouTube

enjoy.


side note #2- is this fast enough to be a lower end noise?

[woodsman]

I've been watching your 'project' and admire your bravery and thought you had it licked! Not quite yet, but keep up the good fight and here's to a happy end!