Originally Posted by WylieCoyote
You have any trouble with coilpacks in that Mazdaspeed after washing the engine? I went through two episodes of breaking down on the highway in my MS6, Mazda claimed water caused both. I didn't remove the intercooler after washing the engine, so apparently water sits in the coil pack valley in the valve cover. Or, it did in mine.
I never replaced a coilpack in 8 years and 158k miles.