2002 Pontiac Montana fouled plug

2002 PONTIAC MONTANA
150,000 MILES • 3.4L • V6 • FWD • AUTOMATIC
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WILLIAM505
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  • 2 POSTS
The spark plug becomes fouled and starts to miss
May 13, 2015 at 6:19 PM
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MHPAUTOS
  • ✓ASE Certified Mechanic
  • 31,937 POSTS
  • ASE Certified Mechanic
First easy question, how many Kms or miles on the plugs? and is it black fuel fouling or white ash deposits?
May 14, 2015 at 3:09 AM
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WILLIAM505
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  • 2 POSTS
All I know is the van starts misfiring after 3 days of running and acts like she is stalling at red lights
May 14, 2015 at 7:43 PM
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MHPAUTOS
  • ✓ASE Certified Mechanic
  • 31,937 POSTS
  • ASE Certified Mechanic
Start with a compression test and new spark plugs, check air filter is not blocked.
May 15, 2015 at 5:44 AM
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