/ 2021 John Deere has a Non vented, recirculating fuel system that may have a clogged return hose. Can it be bypassed or unclogged easily?
#11
It is really odd to have the fuel line aft the fuel filter clog. Was it clogged with old filter material? Bad line?
In regards to the vapor system, the line is small- but mouth pressure will find its way to the other end. the little orifice in the air box must be open obviously. Remember that tiny hole in the old fuel caps? That's all the volume of air that needs to pass to keep the tank flow going. Remember dipping the straw in milk or soda when you were a kid, and when you plugged the "vent" by holding the straw- the liquid wouldn't come out of the straw? There's your visual of how the system works. Except it doesn't spill all over your shirt when you take your finger off...
In regards to the vapor system, the line is small- but mouth pressure will find its way to the other end. the little orifice in the air box must be open obviously. Remember that tiny hole in the old fuel caps? That's all the volume of air that needs to pass to keep the tank flow going. Remember dipping the straw in milk or soda when you were a kid, and when you plugged the "vent" by holding the straw- the liquid wouldn't come out of the straw? There's your visual of how the system works. Except it doesn't spill all over your shirt when you take your finger off...