2000 Toyota Corolla Knocking at every startup

2000 TOYOTA COROLLA
118,400 MILES • 4 CYL • FWD • AUTOMATIC
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HEMANKAPS
  • MEMBER
  • 4 POSTS
Hi,

I have a 2000 toyota corolla LE 4 cyl. There is a knocking sound whenever the vehicle is started and run for a couple miles. This knocking goes away eventually.
But when the engine is restarted, even if it is warm/hot, the knocking again comes for a few miles.

How to fix this problem? Any pointer or help is appreciated. Atleast throw some light on the problem area.

Thanks
Himanshu
Oct 17, 2010 at 6:33 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Sounds like a lifter leakdown problem -when it pumps up the noise goes away
Oct 17, 2010 at 6:46 PM
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MMPRINCE4000
  • ✓Experienced Mechanic
  • 8,548 POSTS
If it was a main/rod bearing, it would not go away.

Possible lifter, but I would also check the accy. drive, like the tensioner.

On cold engine, remove belt(s) and start engine for a minute, if no noise, then a belt driven accy. is problem.
Oct 18, 2010 at 1:34 AM
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