I have a 01 blaster. I just went through the entire engine new crankbearings and seals, new piston and gaskets, everything. I started the other day for the first time and it fired right up. After I shut it off I couldn't get it started again and when I finally did it will run for a few seconds then it will backfire and die. I have tried a new coil, have changed the reeds, and cleaned the carb. Not sure what else I should try if it would be the flywheel and stator or something else. Any ideas?
Blater Backfire
- Thread starter ZR900
- Start date
did you change the plug. same thing happened to me after rebuild, turns out the plug was just fouled
im not a expert in these things but it shudve been broken in the right way if not u cudve fried the piston and it bakfires wen u get bad compression... or the boots rnt on the carb all the way and its catching some air not letting it start i dont think u will bakfire from a bad plug unless u r kicking it 20 times to hear a lil pop but then again im not a pro just check the boots and take the head off to see if u have a fried piston i wud chek piston b4 buying anithing
I have changed the plug and checked the piston. The jetting is the same as it was before I rebuilt it so it should be a good starting point. But it doesn't run long enough to even color the plug.
have you took your carb apart checked and cleaned it? i know you said you did but almost sounds like a plugged pilot jet.
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Yeah the carb is clean. I even pulled a carb off another blaster to see if that would make a difference and it didn't help.
Backfiring is usually related to spark timing. Maybe your flywheel is loose or slipped on the key? Since it started fine, then died suddenly, I would give that a check.
