erniewjr

Rich, I do have a auto start system but it is in manual mode. I will disconnect now then try to correct the issue when I return. Thanks,

I pressed the stop button and the sound is the same clicking sound I have been hearing. I will disconnect the 12 volt ground at the pump while I am gone. Thanks to everyone for the assistance.

My Onan 7500 has made a clicking sound the last two mornings like the glow plugs are sparking. I can stop it by quickly pressing the start switch. I am going to be away from the motorhome for a couple of weeks and don't want the clicking to happen when I am gone. I don't want to put the motorhome in storage mode since I want the heater to run if the temperature drops. What can I do to fix the problem or disconnect the circuit that causes the glow plugs to start clicking.