Complicated carb problem
I bought a JD 285 tractor and was told carb is flooding an needs a kit.
When I first blew in fuel inlet while float was closed, I found out it was passing air so I ordered a kit and replaced the nozzle. Now it holds ht blow pressure.
When tested on the machine, I found that I still have the flooding issue.
This time I tried to pressure water in the inlet when empty and something strange occurred. As soon as the water was getting in the fuel inlet it started coming up the nozzle and pilot channel causing the flooding.
The only thing that makes sense to me is that there should be a hole or something at the top of reservoir to allow air come our while the reservoir is filling. It seems like this hole is clogged and the pressure is pushing the water up the fuel nozzle as soon as the reservoir starts to fill. To check this theory, if I pre-fill the reservoir and then try to pressure water in, it stops the fuel since the flow blocks it as expected, but if the bowl is empty and I start to let the water in, it starts to pour inside the carb.
When I opened the bowl and looked above the float, I can see a hole which makes sense to be a hole that depressurizes the bowl while filling up, but when looked inside it does not make sense to be connected outside anywhere.
Any of you guys have any experience with it? Is there supposed to be something like a capillary hole to allow air out while fuel is filling up the bowl?
Any other thoughts?