Guest Posted April 5, 2012 Share Posted April 5, 2012 I have been facing this very strange knock on my D15Z3 when the engine is cold at a certain RPM only it. It goes away as soon as the engine has warmed up and sounds 100% healthy once the engine has warmed up. I have done the valve clearances to OEM spec and this has not helped it. The car has covered almost 150K but other than this noise I cant see anything ovbiousley wrong the car does not burn oil and theres no power loss.This video on youtube shows the same exact noise:http://www.youtube.com/watch?v=HZ9JLcW6FoIThere are various things mentioned in the coments but any advise would be appreciated. Quote Link to comment Share on other sites More sharing options...
Guest Posted April 5, 2012 Share Posted April 5, 2012 I have been facing this very strange knock on my D15Z3 when the engine is cold at a certain RPM only it. It goes away as soon as the engine has warmed up and sounds 100% healthy once the engine has warmed up. I have done the valve clearances to OEM spec and this has not helped it. The car has covered almost 150K but other than this noise I cant see anything ovbiousley wrong the car does not burn oil and theres no power loss.This video on youtube shows the same exact noise:http://www.youtube.com/watch?v=HZ9JLcW6FoIThere are various things mentioned in the coments but any advise would be appreciated. Quote Link to comment Share on other sites More sharing options...
noodels Posted April 5, 2012 Share Posted April 5, 2012 sounds like piston slap Quote Link to comment Share on other sites More sharing options...
noodels Posted April 5, 2012 Share Posted April 5, 2012 sounds like piston slap Quote Link to comment Share on other sites More sharing options...
Guest Posted April 5, 2012 Share Posted April 5, 2012 Hmmm but why only when the engine is cold and only at a certain rpm ? Quote Link to comment Share on other sites More sharing options...
Guest Posted April 5, 2012 Share Posted April 5, 2012 Hmmm but why only when the engine is cold and only at a certain rpm ? Quote Link to comment Share on other sites More sharing options...
andrew1 Posted April 6, 2012 Share Posted April 6, 2012 I have the same noise on my mb2 1.4 se 123600 on the clock although my car seems to use oil but i cant see that it's smoking also i got this on my recent MOT an advisory (Exhaust emits blue smoke during acceleration ) So any help or advice would be appreciated ThanksUpdate the noise has not been around for a while now , maybe it was me being paranoid as it only happened for a few days Quote Link to comment Share on other sites More sharing options...
andrew1 Posted April 6, 2012 Share Posted April 6, 2012 I have the same noise on my mb2 1.4 se 123600 on the clock although my car seems to use oil but i cant see that it's smoking also i got this on my recent MOT an advisory (Exhaust emits blue smoke during acceleration ) So any help or advice would be appreciated ThanksUpdate the noise has not been around for a while now , maybe it was me being paranoid as it only happened for a few days Quote Link to comment Share on other sites More sharing options...
civicturbo79 Posted April 8, 2012 Share Posted April 8, 2012 Piston slap is hard to get unless the engine has forged internals , i would go with little end bearings worn and as they warm up the metel expands and the noise stops , if it was big ends the engine would not last long at all and would get worse fast . Rich. Quote Link to comment Share on other sites More sharing options...
civicturbo79 Posted April 8, 2012 Share Posted April 8, 2012 Piston slap is hard to get unless the engine has forged internals , i would go with little end bearings worn and as they warm up the metel expands and the noise stops , if it was big ends the engine would not last long at all and would get worse fast . Rich. Quote Link to comment Share on other sites More sharing options...
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