Hi guys, on saturday i put a new set of ngk 7b spark plugs in my 00 sti 4dr, I started car up and it was running lumpy. But when driving up yo 3k revs mainly first and second she is spluttering, i dont know if its fuel or plugs ????????? please help.

 

did you check the gap on the plugs before fitment?

 

So did the car do this before the new plugs if so then its not the plugs,on the other hand if the car was fine before then you change the plugs then it must be the plugs that are at fault.

Just to comfirm this put the old plugs back in and see how she goes then.

 

He dident know about tha gap as far as I know. The car ran fine on the other plugs.

Can you fill me in on the whole gap thing when fiting them.

Cheers

Renno