2001 GMC Savana spark color

Tiny
RANDYFRY
  • MEMBER
  • 2001 GMC SAVANA
  • V8
  • 2WD
  • AUTOMATIC
  • 104,000 MILES
What does a yellow spark mean?
Saturday, January 24th, 2009 AT 5:05 PM

1 Reply

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
It means it is weak spark which will cause poor performance. Usually can be solved with new plugs and wires. Also new coil packs will help as well.

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Saturday, January 24th, 2009 AT 6:35 PM

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