Engine cut off while driving

John41

So I have a 342 with Volvo Penta 5.7 engines. I took a ride up to a favorite restaurant which was an hour and a half  away and on the return trip I was cruising at 27 mph and all of a sudden my starboard engine goes dead. It started back up and was making a slight noise but was able to make it back home with no problem. I didn’t over heat and my oil pressure was fine. My mechanic checked my fuel pumps recently and they were both good. This happened to me before around a month ago. I know this one might be hard to figure out but does anyone have any ideas where to start?

Aqua_Aura

Just throwing out guesses but it seems like a sensor of some sort. I am not sure what sensors that engine has maybe crank position sensor, that would cause it to quit abruptly. If it was fuel related I would think it wouldn't abruptly quit like that. Something possibly on the spark side being stopped would seem to cause an abrupt shutdown. 

aero3113

Coil maybe?

69fastback

Mine would intermittently do that and it was the ignition switch. 

212rowboat

did that noise sound something like a helicopter was chasing you?

natalee520

@212rowboatwhat is it if it does sound like a helicopter? I might be having the same thing as John...

davidbrooks

Something like that definitely feels electrical. Almost like it lost the ground. Check your ground wires. Connections as well as the wire crimp in the connection itself.

212rowboat

natalee520 said:

@212rowboat what is it if it does sound like a helicopter? I might be having the same thing as John...

Operating above safe trim (into the trailer trim range, often because trim limit not set properly) and/or failing gimbal bearing.  

Its the equivalent of stalling out using a clutch... 

The helicopter sound... a struggling gimbal.  

natalee520

Mine turned out to be a fuel pump and a belt needing replacement, both kinda happening at the same time coincentidentally. I just didn't know much about boats or boat noises at the time so the whirring I was hearing was more the belt and the engine issue was the fuel pump. They were pretty easy fixes in the end.

LaRea

@natalee520 - good to know it was that easy.