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Onan 5000 in RV, Starts then Dies about 15 times, then Starts and Runs Perfect


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  #1  
Old 03-13-2018, 11:23:19 AM
F800kris F800kris is offline
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Default Onan 5000 in RV, Starts then Dies about 15 times, then Starts and Runs Perfect

Onan 5000
Model 5BGEFA11579N
Serial J973754659

So I bought a 1998 Georgie Boy RV. First RV I've owned. When I bought it the guy said the generator would start and it does so in a couple of times. That was true. Would start and die maybe once then fire right up. It has a new air filter on it, 2 new plugs, and I installed a new fuel filter as you can see in the pic. It looked as though the fuel filter was the original one from 98 so I installed new fuel hose and a filter. Now it will start and run for about 2 seconds, then die. I have to do this about 15 times before eventually it will start and run perfect. Did i mess something up by installing this new style filter? The original one didn't have a check valve in it? Thanks in advance guys.
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  #2  
Old 03-13-2018, 12:04:20 PM
F800kris F800kris is offline
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Default Re: Onan 5000 in Rv, starts then dies about 15 times, then starts and runs perfect

I can't seem to figure out how to correct my spelling mistakes or edit my post. So I'm just going to clear something up. The generator used to have the oem metal fuel line on it with the oem metal fuel filter. I removed that and installed what you see here. I was going to reinstall the old line and filter yesterday but like a idiot I have misplaced the metal line. Dangit..
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Old 03-13-2018, 12:13:02 PM
consolenut consolenut is offline
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Default Re: Onan 5000 in Rv, starts then dies about 15 times, then starts and runs perfect

It maybe doing that waiting on fuel to arrive from the fuel tank. It will normally take 2 or 3 tries to get the fuel pump primed.
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Old 03-13-2018, 12:18:32 PM
Pete Spaco Pete Spaco is offline
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Default Re: Onan 5000 in Rv, starts then dies about 15 times, then starts and runs perfect

Any chance that the choke isn't working or isn't set right?
I once had a similar model that did that until the engine warmed up enough to run without choking.

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Old 03-13-2018, 12:28:25 PM
OEM Volunteer OEM Volunteer is offline
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Default Re: Onan 5000 in Rv, starts then dies about 15 times, then starts and runs perfect

Here's the manual for that genset

http://www.skilledcrafting.com/onanfiles/965-0130%20Onan%20BGE-BGEL%20series%20RV%20Genset%20Operator's%20manual% 20(01-1987).pdf

Not to be insulting but, have you checked the engine oil? That filter looks like it's been there awhile. Low Oil, Too Much Oil and, Problem with Oil Sensors, are my first thoughts. Just guesses though.
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Old 03-13-2018, 01:02:58 PM
len k len k is online now
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Default Re: Onan 5000 in Rv, starts then dies about 15 times, then starts and runs perfect

First disconnect gas line and see if have good flow when pump is on.

If old air filter was VERY plugged they might have made the main mixture jet very lean to compensate, richen it out (it's on carb bowl bottom).


Manual numbers and link to them
BGE spec f-k---NHE-spec e-k--EMERALD PLUS--SERVICE--(9-94)--- 965-0528 <-----read this one
BGE Spec F-P Parts 965-0231
BGE-NHE--EMERAL PLUS ---INSTALL---965-0628
BGE-BGEL OPERATOR---965-0130
http://www.twinslan.net/~n0nas/manuals/onan/
In the link press...... control F to bring up a search box and type in the manual number
.

Last edited by len k; 03-13-2018 at 04:06:55 PM.
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Old 03-13-2018, 01:13:45 PM
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Default Re: Onan 5000 in RV, Starts then Dies about 15 times, then Starts and Runs Perfect

On mine, pressing the start/stop switch to the stop position will run the fuel pump to prime the fuel line before starting. Then press start.

Another thing regarding motor homes, the fuel line pick-up is usually placed at a higher level in the tank so that you will still have some fuel left for the main engine when the tank runs low. If you have 1/4 tank or more this shouldn't be an issue.

If you or the owner before you have messed with the fuel richness adjustment screw, anything can happen. Some adjustment screws have limiting stops to keep it from turning more than one revolution. Also, if the motor home has sat unused for a year or more, there is the possibility of clogged jets because of dried fuel residue inside the carburetor.
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Old 03-13-2018, 01:22:22 PM
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Default Re: Onan 5000 in Rv, starts then dies about 15 times, then starts and runs perfect

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I can't seem to figure out how to correct my spelling mistakes or edit my post.
You have to be a subscriber to edit your posts. You can also post more pictures when you are a subscriber.
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Old 03-13-2018, 01:41:42 PM
len k len k is online now
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Default Re: Onan 5000 in Rv, starts then dies about 15 times, then starts and runs perfect

Service manual 965-0528 listed as spec E-K that I linked you to also applies to your spec N gen.

Looking at that service manual schematic looks like none of the BGE specs have a fuel prime feature (holding stop button).

Some newer gen models/designs do however. But they are not BGE models. I'm thinking HGJA and such models

Last edited by len k; 03-13-2018 at 02:28:05 PM.
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Old 03-13-2018, 01:44:12 PM
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Default Re: Onan 5000 in Rv, starts then dies about 15 times, then starts and runs perfect

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Originally Posted by F800kris View Post
I can't seem to figure out how to correct my spelling mistakes or edit my post...
You do not have to be a subscriber to edit posts. Only registered I, II, III. On bottom right, to left of "quote" should be edit with a tiny pair of scissors.
You can make changes soon after you post and does not show. After a while, will say "edited" in lower left. You can always make changes, even days later.
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Old 03-13-2018, 03:38:31 PM
F800kris F800kris is offline
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Default Re: Onan 5000 in Rv, starts then dies about 15 times, then starts and runs perfect

Great question. How do I know? Is it adjustable?

Quote:
Originally Posted by Pete Spaco View Post
Any chance that the choke isn't working or isn't set right?
I once had a similar model that did that until the engine warmed up enough to run without choking.

Pete Stanaitis
---------------
How do I know if the choke is working right. Is it adjustable?

Quote:
Originally Posted by OEM Volunteer View Post
Here's the manual for that genset

http://www.skilledcrafting.com/onanfiles/965-0130%20Onan%20BGE-BGEL%20series%20RV%20Genset%20Operator's%20manual% 20(01-1987).pdf

Not to be insulting but, have you checked the engine oil? That filter looks like it's been there awhile. Low Oil, Too Much Oil and, Problem with Oil Sensors, are my first thoughts. Just guesses though.
Thanks so much for the manual link. I checked the oil level but I will check again. The oil actually looked decent. Still light in color.

Did not realize that Harry! Will try that when I get home

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You do not have to be a subscriber to edit posts. Only registered I, II, III. On bottom right, to left of "quote" should be edit with a tiny pair of scissors.
You can make changes soon after you post and does not show. After a while, will say "edited" in lower left. You can always make changes, even days later.
There is nothing to the left of quote for me. Maybe because I'm new
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Old 03-13-2018, 04:04:23 PM
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Default Re: Onan 5000 in Rv, starts then dies about 15 times, then starts and runs perfect

For adjusting choke the service manual I linked you to in post 6 has better info than the operator's manual.
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Old 03-13-2018, 10:33:59 PM
F800kris F800kris is offline
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Default Re: Onan 5000 in Rv, starts then dies about 15 times, then starts and runs perfect

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Originally Posted by OEM Volunteer View Post
Here's the manual for that genset

http://www.skilledcrafting.com/onanfiles/965-0130%20Onan%20BGE-BGEL%20series%20RV%20Genset%20Operator's%20manual% 20(01-1987).pdf

Not to be insulting but, have you checked the engine oil? That filter looks like it's been there awhile. Low Oil, Too Much Oil and, Problem with Oil Sensors, are my first thoughts. Just guesses though.
I don't think that is the manual for my generator. Mine has a coil on the back. This one has breaker points. Also my fuel pump hangs off the side.
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Old 03-14-2018, 06:06:49 AM
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Default Re: Onan 5000 in Rv, starts then dies about 15 times, then starts and runs perfect

Dang spool checkers!
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Old 03-14-2018, 06:14:40 AM
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Default Re: Onan 5000 in Rv, starts then dies about 15 times, then starts and runs perfect

Quote:
Originally Posted by len k View Post
First disconnect gas line and see if have good flow when pump is on.

If old air filter was VERY plugged they might have made the main mixture jet very lean to compensate, richen it out (it's on carb bowl bottom).


Manual numbers and link to them
BGE spec f-k---NHE-spec e-k--EMERALD PLUS--SERVICE--(9-94)--- 965-0528 <-----read this one
BGE Spec F-P Parts 965-0231
BGE-NHE--EMERAL PLUS ---INSTALL---965-0628
BGE-BGEL OPERATOR---965-0130
http://www.twinslan.net/~n0nas/manuals/onan/
In the link press...... control F to bring up a search box and type in the manual number
.

If old air filter was VERY plugged they might have made the main mixture jet very RICH to compensate, LEAN it out (it's on carb bowl bottom).
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Old 03-14-2018, 11:41:29 AM
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Default Re: Onan 5000 in Rv, starts then dies about 15 times, then starts and runs perfect

Quote:
Originally Posted by F800kris View Post
..... my generator. Mine has a coil on the back. This one has breaker points. Also my fuel pump hangs off the side.
Odd, your nameplate clearly says spec N . Onan changed from points to swinging plastic arm magnet driven electronic pickup ignition starting with spec G. Maybe your sheet metal cover with nameplate came from another gen. But that doesn't really matter for now, I'd do as I recommended back in post #6
.

Last edited by len k; 03-14-2018 at 01:57:37 PM.
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Old 03-15-2018, 11:18:01 PM
F800kris F800kris is offline
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Default Re: Onan 5000 in RV, Starts then Dies about 15 times, then Starts and Runs Perfect

Ok so just a update. Always hated searching the internet for someone with the same problem, then find the perfect thread and exact symptoms but no one posted the fix.

SO don't know if it's fixed or not yet but it has started on the second try yesterday and first try today. 24hr cool down period. Before I tore into the manual I figured I'd try one more thing.

1. Got the generator running and let it run for about 15 min. Good and warm.

2. Mixed 2 parts gas to 1 part seafoam in a small plastic water bottle.

3. Removed the fuel supply hose from the bus fuel tank and put it into the bottle. Let it run on this strong mixture for ten mins or so. It had some white smoke and didn't always seemed like it liked it.

Hooked up gas line back to it and let it sit to the next day. Cranked it a few times to get the air out and that's where I am right now. May have been something it the carb? If it acts up again I'll revive this post! Thanks for all the help so far
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Old 03-22-2018, 09:13:08 AM
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Default Re: Onan 5000 in Rv, starts then dies about 15 times, then starts and runs perfect

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