IF you are talking about "outside" the engine, on the plugs and on the heads around the plugs, then the cause is probably one of two things:
how to chang spark plugs in a 1992 Pontiac grand prix
I own a '97 Pontiac grand am where would i find the spark plugs so i can change them?
8
.60
at the end of the plug wires in the head
i dont know trying to find the answer my self
one per cylinder
The first 3 spark plugs to the right are easy to change,the one on the left you have to loosen up the alternater to get to.
Give it a tune up. Change the spark plugs and wires..
on top of the engine there is a cover sheild. remove the cover by the four bolt. the plug boots will come with it, the spark plugs are down in the holes.
the sparks plugs are under the cover on top of the engine
The spark plug gap for a 2007 Pontiac Grand Prix is .060. Most plugs come pregapped for your vehicle but it is always a good idea to check them.