Started working on an old mower this afternoon with a Kubota D600 engine. The unit wouldn't start last summer and the owner left it set. I am getting fuel from the filter to the fuel pump. The pump is a mechanical like was used for years on car engines. I'm not getting much flow or pressure out of the fuel pump to the injection pump when cranking the engine. Not getting a good high pressure spray, but some fuel, when I cracked open an injection line. Tried a bit of starting fluid while cranking the engine and still didn't get a pop. I expected it to run a few turns on the starting fluid if I had just a fuel problem. Any one have experience with these?