A parts store guy told me that Champion plugs are a step down from most spark plug brands, is this true? I never really believe these guys, mostly they don't know what they are talking about. I'm looking into getting them to replace my factory plugs.
i have never had luck with them in a ford,but i have the new ones in mine and i have about 1200 miles on them.so far they are working great.i felt a little more bite on the bottom with them over the junk plugs.i have been playing with the preditor on the timing and the fuel.so far they are holding up.
I throw the BS flag. I've got between 3 & 4K miles on my 7989's, no problems, better throttle response and great gas mileage. AND, I sleep better knowing those junk plugs are gone.
I put the new champ 7989's in mine a week ago. Noticed increase in throttle response for sure. My old plugs looked like this after 19k miles. Not bad but I'm glad they're out now.
That picture has me scared to say the least. I haven't touched my plugs in over 50 k miles..... I'm going to by a beater car before I replace my plugs just incase I have issues and have to pull my heads off.......
Ahhh, you'll be fine! . Those plugs have taken a beating in 20k miles. Three or four different tunes, a dozen or so dyno runs and multiple mods taken on and off.
If your car has been stock tune (or just one other tune) since new you probably have nothing to worry about...
Oh, and another thing, I used PB Blaster to remove them. The first bank came out like butter with the PB Blaster. On the second bank I tried the first plug w/o the PB and it sqeaked all the way out. I don't think you'll have a problem with PB Blaster. (however, I am no way responsible for any disasters that happen if those plugs come apart).