I've been getting really bad gas mileage in my sixxer... I'm talking in the single-digits. So, I took out all my spark plugs... and, well... I'm fvcking confused:
The spark plugs are in order of how I took them out. So the ones on the left is the passanger side, the ones on the right is the driver's side.
Obviously something is wrong. My question is: do I have to take it to a shop to fix it?
[P.S. This is a '98 V6 Mustang]
EDIT:: I also get random 'Check Engine Light' warnings. They come and go. It seems really arbitrary.