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Old 03-16-2005, 01:01 PM
Join Date: Feb 2005
Location: Santa Maria CA 150mi North of LA
Posts: 660
strange noise at start up

On my new 240D I have noticed a ratling noise at start up, about 2-3 seconds after start up, the oil pressure goes to 3 and the noise goes away? any ideas? worn out motor, or bad oil pump?
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Old 03-16-2005, 01:11 PM
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Join Date: Sep 2001
Location: central Texas
Posts: 17,277
The factory shop manual for the 240 lists " oil noises" at start up as possibly due to the failure ( or drop out ) of the oil pressure valve... on the back side of the oil pump....
There are about three versions ( like everything else ).. and they specify an update design when replacing.....
You might also check your chain stretch and there is the possibility that the oil pressure/ratcheting chain tensioner is weak or faulty.... like broken spring...
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