Kohler 5 only run for 5 sec

jandav

I have problem with the generator.
It starts but will only run for about 5 sec, then it shuts down with the error code UU (under voltage).
My tech guy has done lot of investigation.
Service kit is installed, spark plug, filter etc.
Fuel pressure is Ok.
The tech guy can get it running on start gas direct into the air filter....

Any suggestions? 

John41

Impeller?

jandav

The Impeller is new, was a part of the service kit.

Liberty44140

UU is really a vague error. When you have a fuel problem (clogged filter, run out of fuel, etc...) you get UU but it can also mean other stuff. I would first make sure it is getting fuel through to the carb and that it is getting water out the exhaust. 

aero3113

I had the UU code on my 5ECD last season. After I replace a few parts that didn’t clear it, I decided to replace the injector and it was fine after that.

LaRea

Check for broken fuse holders.  I had the same symptoms, and fixed it by replacing a fuse holder.

https://rinkerboats.vanillacommunities.com/discussion/7899/generator-acting-flakey-diy-instructions-to-replace-the-fuse-holders 

jandav

It was the injector that needed to be "cleaned", my tech guy used some time to fix it without replace it.
Now it runs fine again.
Thanks for all help!
Have a nice Rinker summer!