1998 Toyota Corolla Suspect timing chain rattle

Tiny
7A6B9C
  • MEMBER
  • 1998 TOYOTA COROLLA
  • 4 CYL
  • FWD
  • MANUAL
  • 15,900 MILES
98 corolla. 1zz motor 159k. Engine rattle at idle- intermittent. Not the serp tensioner. Removed valve cover and noticed chain loose/slack between cam gears. Turned motor to topdeadcenter and removed and reloaded and reinstalled tensioner. Timing chain seems tight only on compression stroke, and has quite a bit of slack between compression strokes on the cam gears. I can literally pick the chain up about a half an inch between the cam gears when not on the compression stroke. Should I dissassemble and look for stretched chain, worn gears and worn chain guides?
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Monday, October 19th, 2009 AT 12:26 PM

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Tiny
MMPRINCE4000
  • EXPERT
Yes, I would replace chain, tensioner and guides, that is a lot of play. Inspect gear teeth for wear.
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Tuesday, October 20th, 2009 AT 9:39 AM

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