R50/53 Rattle
03-20-2019, 02:13 PM
Join Date: Oct 2007
Posts: 103
Likes: 0
Rattle
Fairly loud metallic rattle from front of engine. 90,000 miles.
03-20-2019, 03:33 PM
Join Date: Nov 2004
Location: Arnold, MO.
Posts: 2,545
Quote:
Originally Posted by
bneer
Fairly loud metallic rattle from front of engine. 90,000 miles.
Timing Chain Tensioner
Or
Belt Tensioner
Usually....
Under the Cam/Valve cover = Timing Chain Tensioner
In front, but outside the engine itself = Belt Tensioner
Get yourself an automotive stethoscope if you can't pinpoint it by ear.
03-20-2019, 04:05 PM
Join Date: Jul 2018
Location: DFW, TX
Posts: 2,019
You might also want to check the heat shields immediately behind the engine. They sometimes are not affixed properly.
03-20-2019, 04:14 PM
Join Date: Jul 2018
Location: Texas
Posts: 767
If it’s truly on the front then it’s the timing chain tensioner. Does it rattle all the time or just after startup for a while?
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