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goodwrench9124, ASE Certified Technician
Category: Chevy
Satisfied Customers: 3432
Experience:  Ase Master Certified, GM Master Certified Tech. Awarded GM Top performer, Hybrid certified
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how to set timing on a 93 s10 2.5 litre with a distibutor

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Submitted: 9 years ago.
Category: Chevy
Expert:  goodwrench9124 replied 9 years ago.

Hello, here is the instructions for setting the timing on your truck

Please accept my answer if i was helpfull!!!





Set timing under the following conditions:

  • Normal operating temperature.
  • Air cleaner installed.
  • A/C "OFF".
  • Transmission in neutral.
  • Put electronic spark timing (EST) in by pass mode. Connect a jumper lead between terminals A and B of the ALDL connector under the dash.
  • Connect timing light and adjust as necessary by loosening hold down bolt and rotating distributor
  • Tighten hold down and recheck the timing.
  • With ignition "OFF", clear ECM trouble code by disconnecting ECM power source.
  • With engine at operating temperature, drive vehicle at part throttle with moderate acceleration and decelerate to idle condition. This will "teach" the ECM/VCM and return the engine to normal performance.