How long are your spark plugs lasting?

[SCAR911]

Got the crazy misfire about 8000 miles ago. Changed the plugs to the colder Ford performance ones and all was good. Well, today it happened again. Feels like the damn motor is come flying out. You guys with a tune going through them this fast?

 

[CigarPundit]

Got the crazy misfire about 8000 miles ago. Changed the plugs to the colder Ford performance ones and all was good. Well, today it happened again. Feels like the damn motor is come flying out. You guys with a tune going through them this fast?

No. I have cold plugs with a tune that I've been running for probably 30k.

 

[V6Raptor]

I change my colder plugs every 15k per Goosetune’s advice and never had a misfire.

 

[CigarPundit]

Have you checked the coils?

 

[SCAR911]

Have you checked the coils?

I have not. Note quite sure how I would check them other than switched them around. Misfire was on #6

 

[CigarPundit]

I have not. Note quite sure how I would check them other than switched them around. Misfire was on #6

Try switching them and see what happens. I doubt it’s the plugs.

 

[Sharpie69]

Take a close look at the ceramic on that plug with the misfire, I had issues last year with misfire and discovering cracked ceramic, I ended up changing all of the coil pacs. I hope this helps

 

[pcs]

if u know what cylinder has the misfire, mark that coil and switch it with a cylinder that you know isn’t misfiring. if the misfire follows that marked coil, then you got your answer.

 

[nikhsub1]

Depending on mileage it could be time for new coils all around.