Originally posted by mbb41:
I installed these before I heard all these horror stories. Since then I have upper RPM band HP. I can't even get up to the governor speed. On acceleration I hear a buzz/rattling from the engine bay. (this only happens while the car is in gear) Long and short of it is that my V6 is slower than my Ztec. Should also be noted that when the engine is cold and I start to drive I get a stuter in the acceleration, If I keep my foot on the gas in the same position it'll start moving then slow down a little followed a some serious power recovery. Question here is could this all be related to the quad 4 plugs that I installed?
i say spend the time and $$ to switch out those plugs and see what happens...app's are less than $20 for 6, seems like it would be worth a shot. sounds like you might be experiencing some type of misfire caused by the plugs or the wires...you might change the wires too, but i would start with new plugs....btw- i know nothing of what i am saying- i went with the app764's the first time because they came highly recomended by other ceg'ers, and the +4's seemed to work ok for only a few people...guys at the auto store said something about poor quality control at Bosch=bad plugs.
