Steve

A bit more info. Which P-120, gas or Kero start. Has it sat for a while? Disconnect the main fuel line, connect it to a ground tank and in Test Functions use the fuel purge option to pump some fuel, it starts at 0.5v, but use Change Value ( held down) and + to increase it up to 3.0v, leave it there 20 secs and wind back ( using -) to 0.5v

Connect it back up and try a start.

Dave