Derf00

So any updates on this?

Jeffk

I really haven't had a chance to mess with it. The car has been sitting in the garage.

I looked around the engine bay the other night while changing the plugs but didn't see any little black box like the one you posted.

mis-matched sparkplug pic for the heck of it...



This poor car...

Derf00

Check...
The plugs actually are fine. Those two happen to be interchangeable. The only difference is the length of the threads. They bottom out at the same point in the head though.

Also, the 104 can go a heat range cooler (103) There is no such thing as a cooler plug for the 764.

Those two are the same heat range so I don't know why they mixed them...unless it's all the store had?

Jeffk

Perhaps, there were 2 - 764's out of the 8. It doesn't look like they'd bottom out at the same point. I'll take your word for it. Car runs much better with the new plugs so I'm happy.

Going to double check for the speedo re-cal thing over the weekend.