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#1
08-09-2005, 04:28 AM
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I heard a disturbing sound...
I heard a really disturbing sound today when I tried to start my 86 420 sel(unknown miles, best guess 350k), most like a crunch and grind at the same time. The old girl cranked again but v e r y s l o w l y... I'm thinking timing chain... hope I'm wrong...
Thanks for any help. Mike 
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#2
08-09-2005, 05:38 AM
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Pop the left bank valve cover and take a look. It could be the chain, I wouldn't try starting it until you verify the chain is intact.
__________________
Mike Tangas '73 280SEL 4.5 (9/72)- RIP  Only 8,173 units built from 5/71 thru 11/72 '02 CLK320 Cabriolet - wifey's mid-life crisis 2012 VW Jetta Sportwagon TDI...at least its a diesel Non illegitemae carborundum.
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#3
08-13-2005, 06:54 PM
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Seems that the rocker on at least one of the cylinders has become loose- bent valve huh?
was quoted 3800.00 to fix.... looks like it's going to the boneyard
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#4
08-13-2005, 07:38 PM
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Well, at least you got your money's worth, I hope. Any further description of the post-mortem? Wonder when the last time the guides/tensioner/etc were changed...
__________________
86 560SL With homebrew first gear start! 85 380SL Daily Driver Project http://juliepalooza.8m.com/sl/mercedes.htm
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#5
08-13-2005, 07:54 PM
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bought the car used, absolutely no idea of prior work history
best guess on miles +350K
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#6
08-13-2005, 10:31 PM
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Did you pop the left bank valve cover or just look at the cam & rocker throught the oil fill? If you pulled the cover a broken chain would be readily noted due to the bare sprocket. $3800 sounds like a complete upper end job due to t-chain failure.
__________________
Mike Tangas '73 280SEL 4.5 (9/72)- RIP Only 8,173 units built from 5/71 thru 11/72 '02 CLK320 Cabriolet - wifey's mid-life crisis 2012 VW Jetta Sportwagon TDI...at least its a diesel Non illegitemae carborundum.
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