Seized Onan...rebuild or replace?
My old Onan 4KV (4.0 BGE series) generator seized up while running down the road (running A/C). Oil level was good, never had a problem running it while driving before, but... Won't even start to tu...
Forum Discussion
You mentioned rear sp.plug hard to access...have you checked or replaced that plug recently? If it is misfiring on that cylinder, it could be why unit quit running. also have seen excessive carbon build-up on top of piston and in combustion chamber cause the engine to not turn over (Carbon locked) also check rear ball bearing on rotor shaft (where you put allen wrench to turn over engine) if bearing is getting dry, can lock up. Engine failures are not common on this model,( but possible of course), as it is a relatively slow running engine (1800 rpm), has a large oil sump (3.5 qt), and full pressurized oiling for internal components
