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knock in engine on startup (archive)
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Posted by bob on March 17, 2002 at 21:41:16:

I changed the oil today in my '01 4.4i at 5K. Can't wait for 15K - it's just against my religion to go that long. Maybe I'll come around, but not on a new engine.

I put in 8 quarts of Castrol Syntec and replaced the filter. It was a "Mann" filter from a BMW high performance shop here in town.

Everything was good. Engine started up, ran good. An hour or so later I drove it to a church meeting. Came out 90 minutes later, and turned the key. I swear I heard the tiniest bit of "rod knock" for less than a second when the engine started up. Then it went away. I shut it off, restarted, and no noise.

It is now sitting in the garage with a big note on the console to remind me in the morning to "listen for knock". Will post update tomorrow.

Has anyone experienced this? I can't imagine what I might have done. It was a routine oil change, and the filter certainly isn't the type to have a valve to prevent pressure/volume bleed down.

Thanks.

Bob

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