I have 85/190e. got fuel/ getting 12 volt's at coil but no no fire at plugs??? . does it sound like crank sensor/ pickup/ ing.modaule?? next ? how do I ck these to find out which one I need to replace? can't find a manual nowhere in my area. by the way it has 136,000 mi. and was running fine. It gave no forewarning just quit running so i towed it home.