Onan 5500 Generator

bounder39zman wrote:
what is model and spec# of your genset, also ser# may help.
the symptoms you have are most likely fuel related, as in a faulty fuel pump or the circuit in control board that powers fuel pump. We see a lot of this in our shop, and especially when ambient temps get higher. to accurately diagnose, you have to run unit until it shuts off, then determine if voltage to pump goes away (bad control board) or pump just quits pumping when it gets hot.

After it quits, the indicator light on the switch is still there. I'm going to try to switch out the fuel pump this weekend. Wish me luck, lol.

allbrandauto wrote:
fuel pump fuel pump fuel pump been there done it not a hard job best way to check wait till it stops running pull cover off push down switch to prime you will here fuel pump clicking if not pull wire off fuel punp get 12 volt test light ground one end check wire you pulled off with other end while pushing prime switch down if test light lights its your problem I carry a extra fuel pump with me

I ordered fuel pump, fuel filter and air filter from Amazon. Should arrive today. I'll try to tackle it myself ... wish me luck.

Kpackpackkelley wrote:
Need the model number of your gen not sure what you have. Could be heat related make sure you have plenty of ventilation. Check temp in compartment while your running it.

Thanks. Unit is stored on storage lot and I'll get the info when i go back to it this weekend.

fuel pump fuel pump fuel pump been there done it not a hard job best way to check wait till it stops running pull cover off push down switch to prime you will here fuel pump clicking if not pull wire off fuel punp get 12 volt test light ground one end check wire you pulled off with other end while pushing prime switch down if test light lights its your problem I carry a extra fuel pump with me

what is model and spec# of your genset, also ser# may help.
the symptoms you have are most likely fuel related, as in a faulty fuel pump or the circuit in control board that powers fuel pump. We see a lot of this in our shop, and especially when ambient temps get higher. to accurately diagnose, you have to run unit until it shuts off, then determine if voltage to pump goes away (bad control board) or pump just quits pumping when it gets hot.

Need the model number of your gen not sure what you have. Could be heat related make sure you have plenty of ventilation. Check temp in compartment while your running it.

My 5.5 has been in the shop for 6 and a half months waiting for parts. Seven sets of end bell, rotor and stator an they are all sh**. Over $2300.00 and they can't get it to run.

Don't call ADVANCED GENERATOR SERVIcE in AzusaCA, . they can't call back. Seems they don't know how to dial a phone or click on respond if you send an Email. Eight sets of parts and still won't run. Contacted Customer Services and Paul Cooper said he would have parts sent right away. Garry Patton from Advanced Generator Service won't answer either email or phone messages. Onan won't help. Paul Cooper an L1 said he would have parts sent immediatly, what a laugh. Sure he did. Six an a half months and they can't fix my 5.5 onan. BS. They don't know how to fix it. They think you are stupid, maybe when the LA County Courts contact them, they will fix mine. I doubt it. They don't care and lie, lie ,lie.

I'm leaving for four or five months in late June. Well screw me they don't care. They will not respond at all. PM me and I will send several pages of lies from Advanced and Onan.

Tried youtube?