- Sep 15, 2006
- Frederick maryland
- Kubota M7040, MF 203 industrial, ZD331, RTV 1100 , Kubota Minix excavator, Unimog 404
The old MF 203 industrial tractor was sitting for a few years. Wanted to bring it back to life and it would not start. Changed the fuel filters and the fuel lift pump and bled the system and checked for fuel flow at the inlet to the injection pump. Next loosened the inlet to the fuel injectors and cranked the engine until fuel was squirting out at the injectors. Started the engine and it ran for 30 seconds and then shut down as if running out of fuel. Repeated this a few times with same results. Suspect at this point that the fuel lift pump is not putting out enough pressure. Not sure what the pressure should be at the inlet to the fuel injection pump. The fuel pump was cheap but looked like the original and pumped ok. Maybe I will buy a replacement pump from the MF dealer as the next step and try again. Any suggestions?