159 V6 Engine Rattle - Alfa Romeo Forum
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159 V6 Engine Rattle

I have a engine rattle/noise on my 3.2 V6 159 manual trans car, it only occurs at 1300-1500 RPM and car be observed with the car stationary and the bonet raised, it goes away at any other revs, it is a metalic vibration type rattle and could be at the front of the engine, has anyone experienced the same?
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Could be the cam chain, check out YouTube for cam chain rattle see if it sounds the same.
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Could also be something like a broken exhaust heat shield or something that is resonating and rattling at specific rpms, or does it sound like something internal to the engine?
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I had one of those, I recharged Air Con (50% empty), replaced power steering fluid (now G1R + Forte Conditioner) and new ancillairy drive belt. Also refitted Air Tunnel duct from Filter with new Jubilee clip so it does not vibrate agaist upper PS hoses to front left of engine (as you look at it with bonnet up).
and... it has gone! And whole bunch of minor noises too.
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