Was also wondering if anyone can tell me if a tune up would help stop a check engine light on, when I scanned it it read cylinder miss firing, or what can I do? Thanks again.

 

It maybe a bad plug or plug the wire shorting out. I've seen this happen on damp days or rainy days. Look at the engine while it's running at night, possible to see a small arcing wire or coil pack if it's bad enough .. Do a tuneup....
orich

 

Thank you, that's exactly what I did, I did a complete tune up and the misfiring stopped! Thanks for the help.

Enrique