I an new to this site, but I have a problem and i need some direction. I have a MI-T-M HDS-3505 hot water washer, 4.7/3500psi. my problem is the ignitor is shorting out and I have narrowed it down to the engine. it runs just fine until i put under load, and then the RPM falls and the volts drop to around 70, and you let off and it REVS real high and the volts go up to like 140-150, and that is poping my ignitor. I have done two coil cleans on it to clean any restrictions, and I also bypassed the coil itself to take that out of the equation, so I have ruled out any restrictions in the line. now I am at the motor(honda 20hp gx620), new fuel line, filter, air filter, plugs, adjusted the valves into spec, did a comp test (120psi), tried adjusting the governor, did not help. I am leaning towards the carb, or a governor problem. any help would be greatly apreciated.