Hi all! Thanks for having this forum, I'm really glad to get some outside perspective on my engine problem.
My John Deere L111 has been running very rough. We took the gas out and put new gas in, cleaned the carburetor, put in new gaskets and a new float, etc. I sprayed the solenoid on the bottom of the Carburetor bowl really good too... Put it back together And it still runs exactly the same as before.
Sometimes it seems like it's not getting enough gas, sometimes it seems like it's getting way too much gas. Sometimes I have to leave the choke on all the way to get it to run, sometimes the choke has to be all the way off. Lately, it just keeps limping along, with the throttle all the way up, and it barely keeps itself running, It's putting out a little bit of smoke and smells really rich...
So, I was fiddling with the wires to the solenoid on the bottom of the carb bowl, and I disconnected the wires, and then the engine started to run perfectly fine full speed for about 5 seconds!!! Then started to die. So I plugged the solenoid in, and it ran amazing for another 5 seconds then started to die.... I'm wondering... Is the solenoid bad, or is it possible that the thing controlling the solenoid went bad? I'm leaning towards the thing controlling the solenoid... But then, what do I know.
What is it that actually controls this little solenoid on the bottom of the carb. bowl? I think it might be the black box circled in the picture below... What is it? Does that control the solenoid?
How to test these two things?
THANKS for helping me out!
Make: John Deere
Serial number: (Some manufacturers have rolling revisions)
Make and model of Sub assembly Briggs Vtwin 20HP
Engine: Briggs and Stratton 406577-0139-E1 Code 050304YG