Originally Posted by thepratts
Had same symptoms with a bad fuel pump. Replaced it and all was OK. It was also an Onan 5500. It is not hard to replace, it is under the generator. It looks almost like a filter but has two wire going into it.
Replaced filter. Replaced fuel pump. Could not get generator to run. Cranks good. Discovered fuel pump not running. No power to fuel pump. Checked power to pump and connecting blade connectors. No voltage at those connections. Jumpered the fuel pump wires to the house batteries. Pump works. Generator starts and runs.
Question: Where do the wires to the connecting blade connectors end? Is there a 12 V fuse or CB that controls power to those connectors?