I have a replacement guardian primpact 50g rv gen. that starts for 2 sec then shuts off. The old one that I replaced did the same after 4k hours. That why I bought a new one. We have replaced the fuel disconected the remote to no avail. one of the reason to install a new one was a electrical ordor coming from gen area so we thought gen was out of life. Any suggestion on how to isolate problem.We have 2 relays not replaced yet that supose to disconet hooked up power to rv when the gen is running.

Electrical Supplies - Guardian - Rv Generator 4800 Watt, Gasoline, Primepact 50G