89 johnson 200hp cutting out and getting alarm

[cricket39]

Motor runs good for for long time. Then it starts cutting out and gives a steady alarm.I let it idle for a little bit alarm stops. Then it runs fine for a few minutes. Then problem starts all over again. I mix own fuel. Has new plugs and wires, fuel pump, fuel filter ,thermastats, impeller,and heat sensors<br /> Not sure what to do next. Thanks, Bill

 

[Solittle]

Re: 89 johnson 200hp cutting out and getting alarm

The alarm means either a problem with the VRO or that it is overheating. Check your OMC manual (you do have one?) for the meaning of the steady tone.<br /><br />If it is the VRO check that yours was disconnected properly since you use premix.<br /><br />If it is overheating get some temperature sticks to verify. You can get an idea of overheating by running the motor with muffs or in the water with the cover off and touching the head with your fingers in several places. After warmup it should be hot to the touch but you should be able to keep your fingers on the head for several seconds without burning bad.

 

[Joe Reeves]

Re: 89 johnson 200hp cutting out and getting alarm

Cricket.... The constant steady beeping alarm on the V/6 engine indicates that it is either overheating or has a fuel restriction. If you're sure that it is not overheating check the following.<br /><br />(Fuel Anti Siphon Valve)<br /><br />Many of the later OMC V/6 engines incorporate a fuel restriction warning via a vaccum device attached to the powerhead. If the engine overheats, or if you have a fuel restriction, the warning is the same.... a steady constant beep.<br /><br />The fact that a engine is not overheating, but the warning horn sounds off with a constant steady beep, and that the rpms drop drastically would indicate that the engine is starving for fuel due to a fuel restriction. Check the built in fuel tank where the rubber fuel line attaches to the tank fitting. That fitting is in all probability a "Anti Siphon" valve which is notorious for sticking in a semi closed position. It will be aluminum, about 2" long, and the insides of it will consist of a spring, a ball, and a ball seat. If this valve exists, remove it, knock out those inner components which will convert it to a straight through fitting, then re-install it. Hopefully that cures the problem.