This old chestnut i know but what should the plugs be gapped at cause me car has a slight on boost missfire and i have a bloke wanting to look at it tomorrow so want it running absolutly perfect for him, just as i would want a car to be running if i bought it.

 

ive got this wee problem at the mo. my coil was cracked so replaced that. Now the miss is as i come on boost instead of full boost. But i also know i need a new dizzy cap to help my prob.

anyways gap the plugs about 25thou or 0.6mm and you should be fine

no lower than 20thou.

chop

 

The car is now fixed, went and gapped the phase sensor and cps and gapped the plugs properly and the thing fooking flys again. I just hope it will be as good for the next owner as it has been for me.