hello everyone I have a john deere F525 with a fuel pump that won't pump fuel I have replaced all the fuel lines, the vacuum line and the fuel pump twice. I had bought and new fuel pump after I discovered it wasn't pumping and it still didn't work so I thought I got a faulty one so I bought another one and it worked when it wasn't connected to the carb so I hooked the lineup and then it would start so I removed the line again and it had stopped pumping, I put my finger on the vacuum line I can feel a lot of vacuum going through the line I also put a bottle full of gas on the line going into the fuel pump and it still didn't pump
Is there a regulator or something for the vacuum pressure
Is there a regulator or something for the vacuum pressure