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Loud Valve Train/Engine Noise at Startup
First Post here, thanks for your input in advance...
2000 Camry LE 4cy 250,000 miles
A couple times here recently upon starting the engine the has been a loud knocking noise, sounds allmost like a rod knock or a valves slapping pistons.. Whatever it is, its not good! The sound only lasts 1 or 2 seconds and disapears into the trusty old valve train noise I am used to.
Opinions Welcome,..
I thought possibly it was some sort of check valve that keeps the oil from draining all the way into the sump that had gone bad, so that the engine is making a dry start, or slop in the timing chain/belt/tensioner pulley??
I will try to get an audio recording of the exact sound soon.
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