Ok like i said i put in the NGK #4306 plugs and the car ran fine. Then i found out from you nice guys i needed to be running a .040 gap. Ok so today i pulled the plugs and lowered them all to a gap of .040 WOW!
That really made allot of difference in how the car runs. It runs allot better. Ever since i got the car it would not run 120mph like it says on the speedometer. I did not think much of it because allot of cars will not go as fast as the speedometer reads. I got it out on the road today and hit that 120pmh no problem. My PT is a five speed and all she would get was 20mpg and i keep the tires inflated properly i knew there was something that could be done to improve that. I took another look at the original Champion #7570 plugs i pulled from the car maybe they had been in longer than i thought two of the plugs the fine wire electrode was shorter than the other two plugs. Oh well the plugs i got know are good for 30k miles and i only drive about 5k miles a year. I think i may try some iridium are platinum plugs on the next change. I get ants in my pants i may change them in 10k are 15k miles.
