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 > Onan Running Problems

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Rickyrocket

Coventry,RI

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Posted: 07/22/22 04:10pm Link  |  Quote  |  Print  |  Notify Moderator

I am always amazed at how one person no matter what will try to discredit what someone has posted,I did indeed do what I said and it was the exact same part,if you have money to throw away go for it.

Argosy24

MI

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Posted: 07/23/22 06:21am Link  |  Quote  |  Print  |  Notify Moderator

FloridaRosebud wrote:



I tried that and bought an aftermarket pump for my 5500. It would not fit. Bolt holes would not line up, and there was no way to mod it to make it work. Bought the Onan and fit like it was supposed to.....buyer beware.....

Al


The important specs on a fuel pump are pressure and flow. Bolt holes can be drilled, 3 ft of gas line will probably let you relocate the pump anywhere in the generator compartment, maybe a short extension for the power wire.

It's not really a buyer beware situation, just a little innovation to save quite a bit of money.

WinMinnie02

NJ

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Posted: 07/23/22 09:46am Link  |  Quote  |  Print  |  Notify Moderator

OP once you fix the generator issue, I always change the oil and air filter on the generator annually - easy task, buy basic hand tools. I also run it monthly for an hour under load and change the oil and air filter annually on the vehicle as well. Class C still going after 20 years.

FloridaRosebud

Melbourne

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Posted: 07/23/22 09:48am Link  |  Quote  |  Print  |  Notify Moderator

Argosy24 wrote:

FloridaRosebud wrote:



I tried that and bought an aftermarket pump for my 5500. It would not fit. Bolt holes would not line up, and there was no way to mod it to make it work. Bought the Onan and fit like it was supposed to.....buyer beware.....

Al


The important specs on a fuel pump are pressure and flow. Bolt holes can be drilled, 3 ft of gas line will probably let you relocate the pump anywhere in the generator compartment, maybe a short extension for the power wire.

It's not really a buyer beware situation, just a little innovation to save quite a bit of money.


Well, like I said in my post, there was no way to mod it to make it work. As an Engineer with over 41 years in the field, it would have been a serious jury-rig to make it work. It is VERY tight in my rig at the jenny. There was not enough metal on the mounting tabs to redrill. So I still think it's a buyer beware situation, as you have to really know your rig. That said, I kept the pump, because, if necessary, I could certainly do a temporary install if necessary to get me home (or wherever).

Al

Blackdiamond

So. Cal

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Posted: 07/26/22 12:14pm Link  |  Quote  |  Print  |  Notify Moderator

Fuel pump, under $20 on amazon, buy 2.


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dodge guy

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Posted: 07/26/22 04:00pm Link  |  Quote  |  Print  |  Notify Moderator

I vented my generator compartment. It used to die out when it was 88deg or higher. Now it is good and maybe dies once on a 2 week trip! I still need to wrap the file line and pump as well as the carb.

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Rick Jay

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Posted: 07/28/22 04:41pm Link  |  Quote  |  Print  |  Notify Moderator

haste maker,

Did you get the problem fixed? If so, what was it?

If you haven't brought it in yet, check the oil level and make sure it's filled up to the fill line, which is kind of a pain to do. My 7K gas Onan was very temperamental with the oil level, especially when I ran multi-viscosity oil in it. When I switched to straight 30W, that pretty much solved the problem.

Worth a shot.

~Rick


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geomusic

Florida

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Posted: 08/03/22 02:06pm Link  |  Quote  |  Print  |  Notify Moderator

My generator would run for a while, like yours, then shut down and not want to start again until it cooled. I am no mechanic so I can't give advice, but an RV mechanic gave me a tip. On the oil dipstick there is a full mark and a low mark. Generally, the tendency might be to keep the oil level up near the full mark. However, generator oil gets extremely hot and (I assume) expands. The mechanic told me that I should keep the oil level a bit lower toward the fill line allowing the oil room to expand. Of course, if you do that you should check your oil frequently to be sure it doesn't fall too low. Anyway, it worked for me.


George in Florida
2006 Phoenix Cruiser 2950

haste maker

alabama

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Posted: 08/11/22 03:53pm Link  |  Quote  |  Print  |  Notify Moderator

Update after a 5 week wait to get into the RV shop, the generator started up and ran for 6 hours with no problem...I know the problem hasn't fixed itself, so with a 47 code which is ignition problem & this unit has a history of fuel pump problems..I am having the ignition packs & the fuel pump replaced..


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geomusic

Florida

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Posted: 08/14/22 04:33pm Link  |  Quote  |  Print  |  Notify Moderator

Oops... already responded.

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