After fixing electrical problem burst brake pipe and finally idle problems the old girl has been running well....... till today cars ran great all day. Just arrived at home and the car starts to tap like tappets and run on 3 cylinders and a smell of petrol. Swapped lead 3 which has the problem with number 1 then the plugs still no difference does anyone know what I could check or anyone had same problem plenty of oil plug was dry.