Motorcycle Repair: revtech 100, spark plug wire, power arc

Question

chopper   QUESTION: bike ran great sunday custom chopper cranked but wouldn,t start monday. changed spark plugs ngk gaped 40 wouldnt start. drained gas through carb bowl. new super un leaded wouldnt start. next bought 2 more spark plugs  back fires through exhaust and carb .cleaned carb checked saw gas squirt through pump. used spark tester white spark both sides of coil compression is very strong squirted some eather in breather nothing happened cranks strong  with batery charger  i wait between cranks to cool off. im thinking timing some how but im frustrated please help. like i said ran great yesterday just parked in garage and today back fires  only

ANSWER: Your timing cant change unless you change it. What ignition are you running? Pull your plugs, are they fouled black?
Mike

---------- FOLLOW-UP ----------

QUESTION: plugs have always looked a little black .i would have to change them every so often because one cylinder wouldnt fire if it sat for a period of time then i would need to hold the spark plug wire away from plug jump spark until it ran good then it would be fine and i could put wire back on plug. my ignition is power arc 0924 with a single coil how can i check to see if my ignition is good thats what i think is wrong. would a screaming eagle ignition fit because i have access to a new one for 40 .00 thanks

Answer
Since yoru plugs are fouled that is what is causing yrou running problem. It sounds like your coil is weak or the plug wires which would cause the problem. You can switch ignition if you wish as long as the ignition you wish, but that wont solve the problem.
Good luck and happy riding
Mike