A mystery (to me) that I hope someone here can help me solve. I have a JD 345 — around a 1999 model. I recently replaced what I think was the original fuel pump because it was leaking out the weep hole after shut down. The new pump has a rubber overflow hose instead of a weep hole (which was a terrible fire hazard), which gets routed down through a hole in the frame. New pump has worked fine for the several weeks that it’s been on the machine — until today.
Around 20 minutes into cutting the grass today I started to smell gas. Stopped the machine, looked underneath, and saw a relatively heavy flow (2-3 drops every couple seconds) coming from the fuel pump overflow tube end beneath the frame. The drips stopped after a minute or so. Thinking I might have filled the fuel tank too high and interfered with the return line, I took some fuel out of the tank and tried again. This time the fuel pump overflow tube stayed dry for a 2-3 minute test run. However, once I shut off the engine, fuel began pouring out of the fuel pump overflow tube and continued to pour until I applied a clamp to the tube to stop the flow. During that time, at least a quart of fuel flowed from the tube and there was no sign of it slowing down until the clamp went on.
I’ve looked around online but haven’t found another discussion of this set of circumstances. If anyone has any insight, I’d be grateful to have it. Thanks in advance.
Around 20 minutes into cutting the grass today I started to smell gas. Stopped the machine, looked underneath, and saw a relatively heavy flow (2-3 drops every couple seconds) coming from the fuel pump overflow tube end beneath the frame. The drips stopped after a minute or so. Thinking I might have filled the fuel tank too high and interfered with the return line, I took some fuel out of the tank and tried again. This time the fuel pump overflow tube stayed dry for a 2-3 minute test run. However, once I shut off the engine, fuel began pouring out of the fuel pump overflow tube and continued to pour until I applied a clamp to the tube to stop the flow. During that time, at least a quart of fuel flowed from the tube and there was no sign of it slowing down until the clamp went on.
I’ve looked around online but haven’t found another discussion of this set of circumstances. If anyone has any insight, I’d be grateful to have it. Thanks in advance.