[Rich Biebel]

I did Jim but emptied my messages and it must have not been sent to you.

Warrantee is 2 years on a 4KY in an RV
The Motorhome builder would refer you to Cummins-Onan for repairs

There is no quick fix and you need to take it to someone who is capable of diagnosing it and repairing it. A Cummins-Onan Authorized shop if it is under warrantee. Or someone with the knowledge and experience that is familiar with Onan's. The machine may have to be removed from the MH to be repaired.