From the first day I bought this engine new, it has been hard to start, floods out plugs, smoke's like a train when started. I have searched the shop owners manual have came up with the following. Maybe a air leak into the fuel line causing the VRO'2 pump to pump more oil into the carburator's. Or a defective VRO'2 pump, or float adjusted to high in the carburator causing it to start hard, smoke alot, rough ideal. After the motor starts I have no problems after the smoke clears. This is the second time it has been in the shop, the first time the mechanic could not find the problem. Just cleaned the jets and sent it back. This engine only has 145 hours on the meter, bought it new in 96. Help me out guys. Email to asmith82@woh.rr.com