engine missed fired so i change the spark plugs and it ran great
but today it started to idle rough and it miss when you you give it gas
so did a plug stop working? plug wire?
if spark plug went bad, what made it go bad?
and to day i got my mufflers removed and they put on dump pipes on it
it sounds good but no mufflers did that make the plug go bad?
please help its my first car
1995 sc300 with 2jz-ge engine
so help please