Discussion Starter · #1 ·
So about a year ago my 12 honda TRX420FPM [rancher 420 4x4,manual shift,power steering] would occasionally miss once good and warmed up. The issue got worse but the bike would still run. So I thought it was the igniton coil going bad, I ordered a non-oem coil [caltric] and replaced it. The day I replaced it I rode for about 20 minutes and it died. It blew the 10amp igniton fuse. The only spare I had on hand was a 15amp, so I replaced it to get me back home. On the way home approximately 5 minutes going about 30 mph the bike flat died. Didn't spit or sputter just completely dead like you hit the kill switch. I pulled the seat to check the fuses and noticed the igniton coil was really really hot and no fuses were blown. So I hauled the bike home, ordered a new ignition coil, replaced it and still no spark, replaced the spark plug, plug wire still no spark. I'm getting 12v on both sides of the igniton coil when the key is turned on. I pulled all the wiring harness apart to check for broken wires etc. All looks good. I took it to honda bc I dont have a peak voltage tester, they kept it for a week and said the stator was not testing and offered to change it for like $900, I picked the bike up from them ordered a brand new stator and pulsing/p/u coil and replaced them both myself. Still nothing. When You turn the key on everything looks normal, fuel pump kicks on etc. But if you pull the plug and hold it to the block or something grounded it's not sparking at all. I have checked the kill switch and it's good. I am dumbfounded. Honda said they "checked" the voltage regulator/rectifier and it was supposedly good. Any advice or repair manual/ wiring schematic link would be greatly appreciated, thank you!