Re: 1993 Yamaha 200 hp txrr carburated
My guess would be with the fuel system or carbs. There are a lot of little passages in those carbs and it doesn't take much to clog one up. That was my problem, well, one of them. Engine would not hit WOT, would idle OK though.<br />Did you check all of your filters? Can you switch your fuel connections between motors to see if the problem reverses itself? <br /><br />I don't know too much about the electrical systems but you could try disconnecting the computer and seeing if you can get up to max rpm's. (This engine does have the micro-computer ignition right?) When you make the emergency circuit, the engine will idle a lot higher. But this will eliminate the sensors from the equation. Maybe your throttle position sensor is bad. Although I don't know if that could throw of the timing enough to lower your rpm's by 1000.<br /><br />One other thing, have you checked your spark?
