my son changed plugs on his 98, in Florida. Driving home the car would not pull up hill and had radom missfires. He took the plugs out and they wre completely burnt up. Iridium plugs. What would cause

Asked by Nov 17, 2014 at 07:53 AM about the 1998 Buick Park Avenue 4 Dr Ultra Supercharged Sedan

Question type: Maintenance & Repair

3 Answers

94,705

Did he set the correct gap on the plue which is .060 (In thousandths of an inch) Caution! Gap is not adjustable on certain plug brands. He could have not put the wires back the correct way, here the is firing order.

1 out of 1 people think this is helpful.
148,745

joemom makes a good point. Also have a look at this thread, owners that had that happen say not replacing wires at same time will cause it. New wires and another new set of plugs, problem solved according to those guy. http://www.v8buick.com/showthread.php?114927-Shorted-sparkplug-SC3800-Engine&s=168aea2f947e5b5f91afcd89ce2a003a

1 out of 1 people think this is helpful.
94,705

Glad everything is working now !

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