For about 2 years my tuner engine made a loud ringing noise beginning 1 minute or so after startup. Like a tuning fork is best I can describe it. Every time it went into dealer they could never hear it. My wife and I always could. It was loud enough to turn heads driving up the street or in the local shopping centre parking area. The sound has now gone much quieter and hangs about for a long time. Prior to this it was gone in 10km. Now it is barely audible over engine noise. It has however changed to what is obviously a series of ringing tapping sounds so close together it almost sounds like one long ring. It eventually changes when the engine is hot to a ringing tapping sound. Not very loud but audible if the engine is idling , not loud enough to attract notice or be intrusive after a few minutes after start-up. Dealer just denies it ever existed and sys I'm the only one who can hear it (although my wife can) . It appears I am a nutter. After some distance the sound changes to what could be mistaken for a high pitched (not ringing) metallic tapping in time with engine, Have googled myself crazy and found sites suggesting it is anything from failing conrod bearings, to piston slap to noisy lifter and am totally confused. Have tried stethoscope on top of engine but can't locate the source of noise. It appears to be in the vicinity of the 5th injector/turbo area but a stethoscope comes up with nothing there.
ANY SENSIBLE ADVICE REALLY APPRECIATED.. THANKYOU!!!!
ANY SENSIBLE ADVICE REALLY APPRECIATED.. THANKYOU!!!!
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