After my 98 Fitch rebuild, I've put my rig on the water 3 times. Each outing the motor starts and runs very well for a short period of time. Plugs in both upper cylinders eventually foul and engine will not run over 2200 RPM. Inspection reveals black and burn't plugs on those cylinders and the rest look normal. I have not purchased the diag software for the motor but looks like a must to figure this one out. Any suggestions would be appreciated....Oh by the way its the 150 model.
