Onan diesel generator problem
Coach was in storage for 4 years. Coach started and runs fine, but Onan 7500 diesel generator cranks but won't start. Replaced fuel filter and it started with a shot of starting fluid, would shut off. Threw a 36 code. Replaced fuel pump. Still just cranks and starts with a shot of starting fluid. It runs fine for a few minutes and then revs up very high and then idles to normal and then either shuts off or revs high again. Afraid the motor will blow up revving so high. Any ideas?