I'm really not sure if I'm suppose to be posting here or not. I'm in need of some expertise.
I run a 96 mxz 583 and my brother has a 95 formulaZ 583.
Ever since he bought his I have done the work and he is having and has had a real issue with fouling plugs. I'm stumped. It always seems to foul them at low rpms or putting along, and there is know order to which one it fouls.We are running BR9ES plugs. I haven't any issue with mine. Any help would be greatly appreciated.
Thanks so much.