I just got screamin demon coil in the mail today. The instructions say that to gap the spark plugs .065. About 8,000 miles ago I changed my spark plugs to denso iridium spark plugs. My question is should I just regap the iridium plugs or sould I just go to the auto store and buy some motorcraft plugs?

 

Id get a whole new set of plugs and gap them at what the instructions say. But Thats me.

 

I too would get a set of new plugs. If you have the money, it won't hurt. However, if you don't have the money, I'd imagine it wouldn't hurt to re-gap and reuse.

 

I'm using Bosch Platinum +4's and they work great. The extra voltage was made for those plugs as they have pretty big, non-settable gaps. This is why some people have TERRIBLE experiences with the +4's.

 

iridiums are good plugs. I love the small tapered end. I'm not keen on changing plugs for the sake of changing plugs. This reality came to me when I swapped plugs and stripped the threads. What a pain.

Because of that experience I'd rather get a get set of double plat or iridiums and forget about them for 50,000 miles. Maybe run like you have now and if you don't see a mpg improvement, pull and regap them.

 

thinking about getting the bosch platinum plugs w/ non adjustable gaps but because of the fact they recommend increasing the gap when running this coil does that elimitate any performance gain u might seen with this coil?

 

thinking of getting the bosch +2 plugs to use with this coil anyone have experience with this combo on a 4.0 ohv or otherwise? the fact the gap is not settable affect the performance?