Change your damn plugs!!
 

Now i've had the car for about a year, 1 auto-x, 1 time trial, 1 HPDE and about 10k of DD (10 CPO S2 sitting at 34k now) i knew it was time for some plugs



The major reason for this is at the HPDE i was having misfire codes at full throttle that would go away (like coil issues, next project,) about to go on a 1500mi trip as well as mazda calls for 30k SP changes.



The one with the broken head was leading SP rear rotor that i had to take out of the SP wire with a set of needle nose pliers and if you can not see the 2nd pic they are quite "carboned" up


Discuss at what i found today......

You found that plugs were "fouled" at around the same time mazda recommends to change those. What is there to discuss? :dunno:

Then change the damn coils... They misfire when there is not enough spark...

I was just coming back to bring that point up. Thanks 04Green :smoker:

Why in the hell did the head of the SP come off in the SP boot.


Have been working on fords for 10 years and this is even a 1st for me!

It was most likely caused by installation error. It also could have happened during the removal. Although, there is a chance that it was manufacture error. I haven't seen this before, so I imagine it doesn't happen often