imported post
I'd suggest getting some spark plug testers which are available at Harbor Freight pretty cheaply. You plug them in line with the spark plug wires and they flash when the plug fires. They are very handy to help show when the high voltage to a plug fails. That's going to be your first priority, discovering whether it's a fuel or ignition problem. I suspect failing pulser coils, but they aren't following the usual pattern. If you don't want to buy a couple plug testers you can carry a couple spare spark plugs. When the bike won't run disconnect the plugs on one bank and hook the spare plugs to the cable, laying the spark plugs on the head so the shells will be grounded. Then crank your bike to see if the plugs are still sparking. If they both spark odds are all four are since each coil fires two cylinders. Once you can either eliminate ignition as the problem or prove it's not you can move onto investigating the carbs as a cause.
I'd suggest getting some spark plug testers which are available at Harbor Freight pretty cheaply. You plug them in line with the spark plug wires and they flash when the plug fires. They are very handy to help show when the high voltage to a plug fails. That's going to be your first priority, discovering whether it's a fuel or ignition problem. I suspect failing pulser coils, but they aren't following the usual pattern. If you don't want to buy a couple plug testers you can carry a couple spare spark plugs. When the bike won't run disconnect the plugs on one bank and hook the spare plugs to the cable, laying the spark plugs on the head so the shells will be grounded. Then crank your bike to see if the plugs are still sparking. If they both spark odds are all four are since each coil fires two cylinders. Once you can either eliminate ignition as the problem or prove it's not you can move onto investigating the carbs as a cause.
