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Join Date: Apr 2012
Location: Vänersborg, Sweden
Posts: 10
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Help with terrible engine sound, (clonking?), maybe left side...

Hello,

I am looking for some help diagnosing a terrible engine sound. Below are the specifics.

1976 911 Targa (2.7), been standing still for a couple of years.

A bit of time has been put into it making it driveable. brakes, electrics and so forth. It has been driven 20 – 30 miles in the past 2 weeks without any unusual noises or issues.

However after taking it for a 3 minute spin ( not a spin around the track. a nice drive with children in the car ) when starting it again 45 minutes later a terrible clonking sound from what it seems the left part of the engine appeared.

Need help in diagnosing and what the issue and remedy might be. I have not had the valve covers off nor the covers for the timing chains/tensioners. The engine pulled strongly prior to this noise. After hearing the noise the car was towed home.



Here is a link to a video clip where you can hear the noise.

IMG 0554 - YouTube

thanks in advance....
Old 08-04-2012, 12:13 PM
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Location: upstate new york
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DO NOT RUN THAT Motor!!! Timing chain tensioner faliure.
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1974 sahara beige 911 targa
1982 chiffon 911sc
1985 prussian blue metallic carrera
Old 08-04-2012, 12:36 PM
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Join Date: Nov 2004
Location: Sharpsburg, Ga.
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Yes, second that tensioner failed.
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David Brunson
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1966 #300720 sold
Old 08-04-2012, 12:52 PM
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2.7 , enigne , noise , studs , tensioners


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