Re: oil injection
The Suzuki oil injection systems are very reliable given some reasonable maintenance. Periodically clean out the oil tank, replace the oil filter puck, and check the condition of the oil hoses and check valves and replace if cracked or hard. An added benefit of oil injection beyond the convenience and economy is that the engine will still be lubricated some if your carb jets get clogged. I would leave it if its working and I would fix it if its not. Just my opinion.
