1995 Buick Riviera spark plugs fouling out

1995 BUICK RIVIERA
Avatar
BLUSH
  • MEMBER
  • 1 POST
Engine Mechanical problem
1995 Buick Riviera 6 cyl Front Wheel Drive Automatic

I have already had the crank shaft sensor changed and the spark plugs. It will run for a couple of hours and then the spark plugs foul out again. What else can the problem be?
Nov 12, 2008 at 12:01 AM
Advertisement
Avatar
BLUELIGHTNIN6
  • CERTIFIED EXPERT
  • 16,542 POSTS
Worn internal engine components such as piston rings or valve guides will allow oil to get into the combustion chamber at a greater rate than can be burned off by ignition. Are they getting oil soaked?

Are they black with carbon deposits after a few hours?

Also, ensure that the plugs are gapped properly or else they will not burn the fuel.
Nov 12, 2008 at 12:27 AM