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Old 07-28-2003, 01:41 PM
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Join Date: Jul 2003
Location: vallejo, CA (bay area)
Posts: 3
oil leak and tensioner release on 99 c280

Hello everybody!! I recently discovered oil drippings on my garage floor. I'm thinking that the leak is from my oil pan or valve cover. Is there anywhere else the leak could be coming from other than valve cover, oil pan or front crank pulley seal?
Also how do I take the acc. belt off? Is there a tensioner I can release? When I look from the engine bay I dont see a tesioner bolt. Any help is appreciated..

Thanks in advance..
99 c280
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Old 07-28-2003, 02:28 PM
it leaks, its german
Join Date: Mar 2002
Location: raleigh nc
Posts: 1,111
The tensioner is "always on", just pull it back by the center stud and remove the belt. There is a lock on it that a 4 mm pin fits into.

112's will leak from the lower oil pan, oil level sensor, timing cover bolts and the front seal, clean it and look after you drive it 10 miles or so.

Project Smoker, '87 603 powered wagon
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Old 07-28-2003, 02:30 PM
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Join Date: Apr 2001
Location: Jacksonville Florida
Posts: 723
I Would Clean Off the Engine (TOP and BOTTOM) Remove the lower splash pan to clean it .....I Use Simple Green ..It Works Great! To Determine the Oil Leak.

The Mono Belt tensioner is Located by The Water Pump it has a Reverse Torx in the center ..You Use that to turn the tensioner
To Remove the Mono Belt
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Old 07-28-2003, 02:41 PM
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Join Date: Jul 2003
Location: vallejo, CA (bay area)
Posts: 3
Where is the oil level sensor located??

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Old 07-28-2003, 06:22 PM
Registered User
Join Date: Jul 2003
Location: vallejo, CA (bay area)
Posts: 3
I looked under the car.. I also took off the lower oil pan off and put a new gasket on it.. It seems to be leaking towards the front drivers side .. I thought it was the valve cover gasket so I replaced the gasket.. Im going to look again to see if the leak has stopped. If not what else can leak around the front driverside? Also where is the oil level sensor? is it around the area that is leaking? What can leak around front driverside area near the a/c conden.?

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