Spark plug code help!

[gm8]

Super 4s are very bad my car misfired the second I put them in.

you changed em while the car was running :p


They are spot on in mine.

[daddy5x]

ive just taken a set of super 4s outta mine if any1 wants then      few month old   they was in car when I got it   ive now got ngk  s
much smoother

[daddy5x]

ngk bkr7e     to be axact

[daddy5x]

the place I bought them from recommended     ngk pfr7q    ?    but expensive my cars standard   for now   so didn't see sense in paying a lot

[Wazzzer]

the P stands for platinum. Will last a lot longer but platinum doesn't conduct as well as copper. But you can affrod to change them twice a year at £5 a set lol

[daddy5x]

im from Yorkshire  (tight)  it would have to be once every 18 month