Its easy to troubleshoot they can take a coil of 1 of the other cylinders and put on that cylinder if it fires then it's a coil and to make sure you can take the other coil and put on the cylinder that was firing and if it doesn't fired then that's pretty good indications that it's the coil

And if its not that Cheack for power to that coil and trace that wire all the way back not to many things that it can be since your getting fuel and fire the the other cylinders

 

How much are new coil packs.

 

Not bad 30.00 each truth be told I am looking at up grading to some off a Chevy Ls v8 they have valor more spark just have to find out how to wire them up

And if u deside to go stock I know RSX type s coil are a bit better

 

Are they plug and play. I don't want to mess with the wiring.

 

The RSX are full blown used them to break 800hp on hatchbones car

 

What year is your car

 

The K series coils are plug/play

 

07. Does the year and or model matter? So the rsx ones are better? Why is that?

 

https://www.s2ki.com/s2000/topic/819...-are-the-best/

 

To be honest I didn't notice much of a difference going from the AP1 coils to the RSX coils. I put in the Okada ones and was able to increase plug gap by 0.005" at the same boost level.