Its a e-350 series with a 460ci efi. Converted to a choachman rv. It belongs to my grandfather and he.wants me to get it running which it ran fine a year ago.Its been a year or so since its been cranked and had little to no gas left in it. Today i bought new battery, and brought two new 10gl gas cans and put a total of 20 gallons of new gas and fuel cleaner for the injectors. Tank holds 40gl. Turn key forward and the instrument panel lights up, warning lights go away as normal, then i turn key to crank and the motor just.turns and turns but wont fire up. No gas is reaching the motor. Plugs are good, vaccum hoses all in place. Is thier a way to pump fuel to motor since now i beleive the injectors are dry. Can you help..? Thanks jeffrey tallahasse, fl.