Backfiring

Tiny
ARCTICKITTEN1212
  • MEMBER
  • 2000 CHEVROLET BLAZER
  • 4.3L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 180,478 MILES
I put new plugs in my vehicle, I got it back in time and it backfires. Wires are on right every thing looks good. I want to know what it could be?
Tuesday, October 24th, 2017 AT 12:52 PM

1 Reply

Tiny
STEVE W.
  • MECHANIC
  • 13,288 POSTS
What do you mean when you say "got it back in time"? They do not have adjustable timing. The distributor moves only to adjust the crank sensor/cam sensor correlation to zero degrees. If you rotated it to adjust the timing it is possible that the rotor is actually sending spark to the wrong post giving you a backfire.

Do you have a scan tool to adjust the system back to zero degrees?
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Tuesday, October 24th, 2017 AT 1:54 PM

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