Thread: New water pump making whirring/roaring when cold - M103 '88 300SEL
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  #11  
Old 02-14-2015, 07:46 PM
porkface porkface is offline
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Join Date: Nov 2002
Posts: 834
an 88 103 engine has a manually-set tensioner. there's a screw, a nut, a guide and a pointer. not automatic. good luck, chuck.
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