I just bought a 98 blaster stock with pipes and filter. It still has the oil injection. The bike will not idle and when i do get it cranked it boggs bad, real bad. It smokes a little more than it should, but is supposed to have a new top end. Im thinking two things could be wrong. The oil injection pump is failing and pumping to much oil or the shade tree mechanic might have but the piston in backwards. (arrow away from exhaust). You can shift into first and drive, but at a speed of around 5mph. TOPS. Any help anyone.:-/