i have a 94 blaster and i am getting low RPM's and no speed. could it be that i have too small of a main jet in it or could it be something else???

 

If you mean that it wont rev then it could be a number of problems. If its bogging out it may be lean. Any number of things could cause bad performance: Too lean, too low octane, wrong oil mix or bad injector ( but I didnt think the 94 had that), dirty carb... The lists goes on and on. Do you have any more information for us?

 

i bought it not working. i had it bored out. then i got it running and it wont reve up. i cleaned the carb and put new reads in it also