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1994 Chevy S-10 Timing Chain

Tiny
JETRINGE
  • MEMBER
  • 1994 CHEVROLET S-10
  • 6 CYL
  • 2WD
  • MANUAL
  • 16,000 MILES
Running perfect until this morning 3 miles into commute, heard loud knock and now runs as if on 3 or 4 cylinders and a new tapping from one of the valves. Sound's like timing jumped? In addition to replacing chain and gears - anything else to be concerned with? Thanks.
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Monday, December 28th, 2009 AT 11:24 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,772 POSTS
Before replacing the timing chain, check it to make sure it jumped time. THere may be internal damage to the engine.

LEt me know what you find.

Joe
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Saturday, January 2nd, 2010 AT 6:26 PM
Tiny
JETRINGE
  • MEMBER
  • 2 POSTS
Timing was definitely an issue. Replaced slacked old chain, all plugs, wires, cap and rotor. Now runs rough and timing mark jumps back and forth 2-4 degrees or more. Distributor seemed ok - not worn but maybe damaged and maybe a lifter is bent? Not sure at this point.
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Monday, January 4th, 2010 AT 10:23 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,772 POSTS
Is there any noise coming from the engine? Also, are there any vacuum leaks? When off idle, does it smooth out?
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Monday, January 4th, 2010 AT 11:16 AM

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