Is replacing the timing chain tensioner a prudent preemptive thing to do? My 01 came to me with no service history. Only 47k miles.
The chain rattles for 1/4 second or so on cold startup. Part is cheap and job looks easy. Any downside?
Yes, always a good plan - even on low-mileage cars the tensioner can become gummed up and ineffective....
Timm..2007 E64 650i Individual Sport..1999 E31 840ci Individual Sport..ex owner of 2000 E38 740..1999 E38 740i V8 M62..1998 E38 735i V8..1993 E32 730i V8..1988 E28 518i
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Chase - Heroes to a generation
BMW changed the design of the tensioner. New one has longer spring.
More info here:
https://www.meeknet.co.uk/e31/E31_Ti..._Tensioner.htm
Timm..2007 E64 650i Individual Sport..1999 E31 840ci Individual Sport..ex owner of 2000 E38 740..1999 E38 740i V8 M62..1998 E38 735i V8..1993 E32 730i V8..1988 E28 518i
My BMW Repair YouTube Channel
My Current 840ci Sport Individual
My Current 650ci Sport Individual
My E31 Repair and Information Website
My E38 Repair and Information Website
My E63/E64 Repair and Information Website
Chase - Heroes to a generation
Whatever you do...do NOT uncompress it prior to installing it. It will uncompress itself after install. If you do it prior, you had better have hands as strong as a rock climber. You know the types, they use their hands to hold themselves aloft without a harness. That strong. (Can you tell I made the mistake?)
Thanks for the heads up on that. The voice of experience?
Also, you will hear terrible clanking until the oil pressure forces out the spring. Don't be alarmed by this - it is normal
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Done this morning. Certainly not aa hard job. The old one was the older style so most likely original. Didn't really clank on startup, more of a rubbing/grinding sound for a second or two. Smoothed out right away.
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