1991 Toyota Corolla

Tiny
PROBLEMCAR
  • MEMBER
  • 1991 TOYOTA COROLLA
Drive Train Axles Bearings problem
1991 Toyota Corolla 4 cyl Manual 275000 miles

what would be the problem with my car if I failed to put adiquit oil in it for the past 3 months ive owned it, probably 3 courts, has run like a champ - no 4th gear, no big deal. Well yesturday all of a sudden a hear a loud not a bang but definitly noise coming from the engine. While idleing is ok then as soon as I take off it still drives, but makes alot of noise. Do you thimk its the camshaft bearing? Whats your take on this. Also the oil stick indicator was bone dry.
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Monday, May 18th, 2009 AT 2:08 PM

4 Replies

Tiny
RASMATAZ
  • MEMBER
Sounds more like lower engine bearings rod/main
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Monday, May 18th, 2009 AT 2:41 PM
Tiny
MMPRINCE4000
  • EXPERT
Yes, I agree with Raz. Most likely the lower end.

You can remove the cam cover, remove plugs, and rotate engine by hand with ratchet and socket on balancer bolt. Check shim clearence with feeler gauge, Intake clearence is.008 and exhaust is.010 on COLD engine.

It would be highly unusual for the cam bearing caps (one at a time) to be loose. You can remove them and inspect the bearing cap surface. The bearing caps are numbered and have an arrow pointing to front of engine (towards timing belt). DO NOT MIX THEM UP OR PUT IN BACKWARDS.

You are most likely looking at a reman'd long block or a used one.

If you are 3 quarts low on oil and ran engine, you most likely runied engine, total capacity is 3.5 or so quarts, on 4AFE engine.
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Monday, May 18th, 2009 AT 6:19 PM
Tiny
PROBLEMCAR
  • MEMBER
Thanks guys. So I cant just take the top off the engine look around and pit it back with outh gappers. Measurements and
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Monday, May 18th, 2009 AT 8:36 PM
Tiny
MMPRINCE4000
  • EXPERT
Excessive shim clearence (intake range is.008-.012) would cause a loud clanking sound, and would indicate a worn lobe, excessive bearing clearence, worn shim, etc.

But again as Raz said, it is most likely rod or main bearing problem, valve noise would occur at idle and all engine speeds.
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Tuesday, May 19th, 2009 AT 5:43 AM

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