Update on the Onan Marquis 5000 generator
This is a factory installed Onan in my gifted 96 Bounder. The coach sat for a long time in storage. It was occasionally used. Then gifted to me by the adopted kids girlfriend and her family.
So after 4000 miles of tooling around California working the bugs out of the coach, ie, tires, shocks, brakes, suspension, the generator has always been a PITA.
I've had that carb off countless times douching it with Seafoam. Never did I force the black bowl off at the bottom of the carb. It would run, then surge then die. Sometimes within 10 minutes sometimes after hours.
So determined to figure this out, and not wishing to drop a grand at the dealer, the other night it was running then quit. I immediately pulled the fuel line and cranked the starter. NO FUEL.
The fuel pump was removed. Attached to the old style Carter fuel pump was this gas regulator. It had 2 black wires attached to it.
I went to the dealer to see what a new carb would run. ($400). That regulator might have had something to do with LP gas. Not sure. Parts guy was clueless.
The service guy told me to go to NAPA buy an aftermarket pump, install it, see what happens. I did. The gen ran but was being overpowered by the flow. Black smoke and gas coming from the air filter housing. I squeezed off the line, choking off the fuel flow it smoothed out and ran.
I then installed an old school universal fuel regulator. I dialed it down to 1.
Gen sat and ran. 2-3 hours it ran. Only once did it hickup. So I still need a carb, but for now it seems to be running enough that in the mornings we can perk a coffee pot, then go back to battery and gas.
I was told that a rebuild kit is available for this unit, but I would rather just drop a new carb on this unit. So far, all I see online is $350ish or so.
I might, within a day or two after running the generator for a while to see how it likes the Eldebrock electric fuel pump, go for a new carb.
I think I might have bought the wrong pump that runs 4-7lbs. I should have paid more attention to the selection, I should have bought the low low powered pump but this universal regulator seems to be working.
Of course, an extension cord to the side door, the suitcase Harbor Freight 2k generator connected is always an option...but it's all about coffee in the mornings....
coffee...once there is fresh coffee....then life begins.
So after 4000 miles of tooling around California working the bugs out of the coach, ie, tires, shocks, brakes, suspension, the generator has always been a PITA.
I've had that carb off countless times douching it with Seafoam. Never did I force the black bowl off at the bottom of the carb. It would run, then surge then die. Sometimes within 10 minutes sometimes after hours.
So determined to figure this out, and not wishing to drop a grand at the dealer, the other night it was running then quit. I immediately pulled the fuel line and cranked the starter. NO FUEL.
The fuel pump was removed. Attached to the old style Carter fuel pump was this gas regulator. It had 2 black wires attached to it.
I went to the dealer to see what a new carb would run. ($400). That regulator might have had something to do with LP gas. Not sure. Parts guy was clueless.
The service guy told me to go to NAPA buy an aftermarket pump, install it, see what happens. I did. The gen ran but was being overpowered by the flow. Black smoke and gas coming from the air filter housing. I squeezed off the line, choking off the fuel flow it smoothed out and ran.
I then installed an old school universal fuel regulator. I dialed it down to 1.
Gen sat and ran. 2-3 hours it ran. Only once did it hickup. So I still need a carb, but for now it seems to be running enough that in the mornings we can perk a coffee pot, then go back to battery and gas.
I was told that a rebuild kit is available for this unit, but I would rather just drop a new carb on this unit. So far, all I see online is $350ish or so.
I might, within a day or two after running the generator for a while to see how it likes the Eldebrock electric fuel pump, go for a new carb.
I think I might have bought the wrong pump that runs 4-7lbs. I should have paid more attention to the selection, I should have bought the low low powered pump but this universal regulator seems to be working.
Of course, an extension cord to the side door, the suitcase Harbor Freight 2k generator connected is always an option...but it's all about coffee in the mornings....
coffee...once there is fresh coffee....then life begins.
