This RV had sat for around 6 years without being started. As a result the fuel system had dried out leaving varnish deposits through out the system. The injectors were replaced, the gas tank was removed and sent out for cleaning and treated, the fuel pump and sending unit were replaced. One of the other issues was that squirrels had got into the engine compartment and chewed through and a variety of wires. The damaged wires were repaired and or replaced where required.