For the last year or so, everytime i start the engine, and only when the engine is COLD, i have like a knocking sound, not rpm realated so much, like a rod knock would be, but more like a "tock, tock tock sound, say 2 per second. If i rev the motor slightly it goes away, its only at the low idle speed and ONLY when the motor is cold.
If i start the engine when the motor is warm, i dont have the noise.
I;ve checked the rockers, checked the converter bolts, and everything is good.
trying to figure out what the heck could be causing this? would a bearing do such a thing?
It seems odd it only happens on cold startup.
performs the same as it always has, doesnt smoke etc......
ANY IDEARS???