TRohlfs Posted July 14, 2017 Share Posted July 14, 2017 Hi, I have a 2000 RX300 with 187,000 mi. I just overhauled the motor because the kid didnt check the oil and the camshaft snapped in the left head. I figured that since the motor is about half way apart i would replace the bearings, rings, oil pump, gaskets and seals. I thought it would be best to replace both heads rather than just one. So, got everthing back together and now there is a loud noise coming from the heads. It sounds sort of like a clatter, but also like a gear whine. I guess the best way to describe it is it sort of sounds like a timing chain when it is worn and has too much slack. The noise is there cold and warm and it increases in speed as I accelerate. Could it possibly be the cam gear and or the vvt gear? There was no noise before the new heads. Any input will be greatly appreciated. Thanks Quote Link to comment Share on other sites More sharing options...
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