6cylinder replaced plugs due to age, 70,0000 miles and things starting
happening.
ran extremly rough. Limped to the dealer, dealer said bad coil pack.
He replaced
it and still had the trouble. Now he said the igniton module is at
fault. Ignition module
did not fix it. He replaced the coil pack again, and ok.
I know I am not the best of mechanics, but can I cause so much
trouble, by just
replacing spark plugs?