car wouldnt crank cleaning the connections on wire harness it cranked right up but a plug fouled changed the plugs it ran great for 2 days then the car cut off suddenly and would not crank messed around and tried cleaning the connections again still not cranking tested for it getting fuel it was so after siting for a week I played with the connections again it cranked right up but the same plug was fouled again PLEASE if anyone can give me some advice to what this might be