i havent replaced the spark plug contacts only sanded them down to be a bit smoother and flatter as they were showing pitting and burn marks,ive cleanes the spark protectors and only run injector cleaner through the petrol,im pretty sure all injectors are going as ive put a screwdriver up to them and listened and the note all sounds the same on each injector
could the blow off valve have any thing to do with the miss as it was homemade and leaked at idle
also the car seems to be running real lean could this be fuel pump not pumping enough fuel?
is there any way i can clean the injectors myself?