I have a 94 blaster. It has a fmf fatty pipe with a power core 2 silencer, delta v-force reeds, k and n air filter, and i jsut recently go tit bored over .40 and got a new wiseco piston. The guy said it blew because i was goin full speed and it was gettin enough gas to the piston. Is this true? well i got it all back together and saw that it wasnt using any oil and luckily when i finished the job i put extra oil in the tank or else it probably would have blown again. i bled the oil pump and then it started using the oil. i was just out ridin today and goin at differnt speeds to break it in. It was feelin powerless like it had a little bog to it and at 1 point acted like it was gonna stale. Does anyone have any suggestions on hwy it runs like this, and what size main jet and pilot jet should i have in it with all the extras i got? anything anyone has will be a help thanx. and also i added 4 oz of injection oil to the gas just incase the oil injection wasnt working. Do u think the problem is all the oil is fouling the plug and casuing it to bog. PLease respond thanx.

 

I had a similar problem to this. My Blaster was in the shop four weeks ago because it did not have any compression. They Bored it .40 over with a new wiseco piston. I got the thing back on a Monday. I broke it in for 5 days of riding slow(this sucks). After about five laps around the track the things bogged down and stalled out. I took it back to the place that fixed it. The piston was once again messed up. They think the Oil injector failed causing the piston to go bad. I should be getting it back soon. I would check for compression and check the spark plug. But it sounds like it could be your Oil Injector. Hope this helps.

 

If your Blaster is that tricked out, than your committing suicide for your motor with oil injection. take it off !!! trust me.