I have a 1978 Mercury 500 50 hp thunderbolt. The motor will start up and idle fine. With ears hooked to the motor using the fast idle or by puting it in gear, it will rev up just fine. With the boat in the water i can put the motor in drive and it will run at idle speeds but as soon as I try to throttle up, the motor will stop running. It has a new trigger and stator. It is missing the mercury switch.
Thanks
Thanks