by Veselin Velikov
(Varna, Bulgaria)
Hello. One of our AD41b serial number is 2204137434, motors does not respond to throttle at certain times. We could leave the dock and the motor runs great with full rpm, no smoke, etc. Then out of the blue when you throttle down to 1000 rpm’s or so, the motor at times does not respond to throttle when advanced and is stuck at 1000 rpm’s in both forward and reverse even as you advance the throttle all the way. When you advance the throttle, the motor does not respond and remains at 1000 rpm’s. If you forget to bring the throttle back down after advancing it, it will stay at 1000 rpm’s and will sometimes surge forward in rpm’s a short time later. A quick test was done while the throttle was not responding to the advanced throttle and the engine was put into neutral and the the throttle was advanced in neutral and full throttle and rpm’s were achieved in this neutral and no load situation (3900 rpm’s). Any advice as to what might be going on would be appreciated. For some reason this seems to occur when the motor is hot and fully warmed up. Fuel is clean and all filters are new and all linkages work as they should. Thanks