Timing advance problems

1986 DODGE COLT
86,000 MILES • 1.5L • 4 CYL • FWD
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LJBD
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  • 12 POSTS
How to check for a bad distributor timing advance?
Mar 26, 2017 at 4:33 PM
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CARADIODOC
  • ASE Certified Mechanic
  • 34,321 POSTS
  • ASE Certified Mechanic
Use an inductive-pickup timing light and watch the vibration damper, with or without timing marks. Raise engine speed, and you should see the damper appear to rotate a little. This pertains to distributors with the vacuum advance unit bolted to the side of it. On newer engines the mechanical and vacuum advance are done electronically in the Engine Computer.
Mar 27, 2017 at 3:39 PM
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