I had some trouble on the way home last night. The car started missing when I was pulsing, at idle it was fine. So, I let up and just drove a steady speed. By the time I had gotten to my house, it was even starting to miss at steady speed.
Once home, I started taking things apart. First thought was the coil packs. I replaced them with ones from the other Paseo I have sitting in the garage. No difference there. Then, I removed the plugs and noticed one was darker than the rest. Bingo. One of the Pulstar plugs that I had gotten from a test on CleanMPG had gone bad on me. I replaced them all with Bosch platinum plugs from the other Paseo and it drove smooth again.
I mention this only really because I've only been running the Pulstars since 8/08, roughly 1.5 years, and only 8,400 miles. These things were supposed to last, and had I actually paid for them I would be very upset. They cost a small fortune if I remember correctly. BTW, I saw no noticeable increase in mileage when I installed them.
BTW, I almost thought the Bosch platinum plugs were bad too. Its a weird looking design. I pulled them out and was like... aw crap, theres no electrode left! But, apparently thats the way they're supposed to be. Mine look just like this, but have only two grounding straps on the side.
