Generator shutting down

Mightychan

Mightychan

Member
Oct 8, 2016
157
Panama City FL
Boat Info
2005 DA 420, AB Dink
Engines
Cummins 6CTA
My 5kw Kholer is shutting down after a few minutes of running. It is pumping cooling water, but it acts as if it is still getting hot. Water pump and impeller fairly new. What should I look for?

Thanks
 
Mightychan said:
My 5kw Kholer is shutting down after a few minutes of running. It is pumping cooling water, but it acts as if it is still getting hot. Water pump and impeller fairly new. What should I look for?

Thanks
Click to expand...


I just went through a similar situation last fall. My issue was that the coolant in the heat exchanger was low. Apparently when it was previously filled, the bleed screw wasn't opened to allow air to escape. When I opened the bleeder and filled it, it took an additional 1/2 quart of coolant. Ran perfect after that. Refer to post #3 of this thread.

http://www.clubsearay.com/index.php?threads/coolant-change-kohler-5e.59336/
 
Thermostat could be sticking as well. Is the heat exchanger clean?

Josh
 
Themostat is new. Exchanger *should* be clean but I will check. Happens without a load. 2004 boat, I don't think there is a diagnosis screen. Thanks all, you have given me some good leads!
 
I had this problem on my 300DA. I went through all the cooling issue possibilities but it ended-up being fuel-related, and two separate problems: the anti-dieseling solenoid was intermittent, and so was the fuel pump. The intermittent nature of the failures made it tough and it took almost a full season to figure out. Two techs thought they had it, only for the thing to shut down again a few hours later.

The first step to diagnose was to see if there was still spark after a shutdown. Simply pull a plug, turn it over with the plug grounded, and see if there is spark. Make sure your ER is well-ventilated when you are doing this.

If there is spark, you can rule out most or all sensor-related shutdown modes. If there is spark, and it doesn't fire, your problem is likely fuel-related. If there is no spark, you need to figure out which sensor is causing the shut-down. I'm not sure what year your boat is, or if your generator provides a code (mine did not), you can determine what the shutdown mode is by removing the electronics module cover and noting which LEDs light when you crank. The generator manual has a troubleshooting guide you can use to interpret the LEDs.
 
Just noticed your boat is a 2004. No error codes!
 
I had mine shut down as well. First time it was the impeller. Second was fuel - the tank selection valve was not all the way over to starboard and that little bit was restricting the flow.
 
importmonkey said:
I had mine shut down as well. First time it was the impeller. Second was fuel - the tank selection valve was not all the way over to starboard and that little bit was restricting the flow.
Click to expand...

Where is this tank selection valve? I might be having the same problem on my 290. I messed with the fuel valve manual knobs and now I can’t be certain which position they were in. I changed fuel filter and impeller...was working fine before changing them.
 
Sounds like you might need to prime. On my 44, the valve is under the cockpit sink.
 
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