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Old 03-17-2020, 12:42 AM   #1
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My BGE onan generator only has spark when you release the start switch.
Any suggestions?
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Old 03-17-2020, 01:05 AM   #2
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My BGE onan generator only has spark when you release the start switch.
Any suggestions?

Welcome to the forum new free!


I'm not familiar with the BGE onan generator. What make/model/year is your rig?
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Old 03-17-2020, 01:38 AM   #3
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1996 Born Free RV
Model #4BGEFA26101M
SER.#F953389983
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Old 03-17-2020, 02:56 PM   #4
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saw this online:

Unit starts and runs, then stops when the start switch is released
Low fluid levels.
Check and bring all fluid levels up to the appropriate levels.
Possible overheating.
Check for blocked air flow or other possible causes of overheating.
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Old 03-17-2020, 04:38 PM   #5
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Are you sure you worded that correctly? I expect the engine runs with start button pressed and quits when released. This means a fault has been detected. The most common one is the control board does not detect AC voltage. Low oil level can do the same in some models.
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Old 03-17-2020, 11:27 PM   #6
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only has spark when you release the switch. if it does start it runs like its only running on one cylinder.
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Old 03-18-2020, 06:41 AM   #7
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Just guessing. That would mean low battery or high resistance battery contacts. Start the engine and try it.
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Old 03-18-2020, 09:52 PM   #8
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oil sender is good. the cables and battery is new.
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Old 03-18-2020, 11:26 PM   #9
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I’m out of ideas. Would you let us know the conclusions when you get it fixed? New control board maybe?
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Old 03-19-2020, 01:59 AM   #10
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It seems as you troubleshooted your unit but are providing rather cryptic summaries statements.

It seems that your unit is running but it is running rough. I am certain you are very busy but so are folks here trying to help you. So, what is the problem?
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Old 03-19-2020, 09:53 PM   #11
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Default Can't locate the Onan fuel pump on my 1996 Ford Coach House "Help' e

Hi everyone I'm Canuck,new to this forum and a new owner of a Class B with a situation, would really appreciate some help. I own a 1996 Ford Coach House with a Onan 2800 microlite Generator and can't locate it's fuel pump.Thanks!
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Old 03-19-2020, 11:25 PM   #12
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Hi everyone I'm Canuck,new to this forum and a new owner of a Class B with a situation, would really appreciate some help. I own a 1996 Ford Coach House with a Onan 2800 microlite Generator and can't locate it's fuel pump.Thanks!
The factory location will be in the air intake housing, readily visible once the cover is removed.

What I and some others did was to get an after market low pressure electric fuel pump and mount it externally for better access as the genny on a not antique Roadtrek usually has to be dropped to gain access. The pump I found had a pressure rating of 1.5 lbs.
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Old 03-22-2020, 05:03 PM   #13
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Quote:
Originally Posted by DaveBad View Post
saw this online:

Unit starts and runs, then stops when the start switch is released
Low fluid levels.
Check and bring all fluid levels up to the appropriate levels.
Possible overheating.
Check for blocked air flow or other possible causes of overheating.
Dave,. I had the same problem. Repair shop said my circuit board was not sensing electricity. He replaced that part and resolved the problem, to the tune of around $500. He also advised me to not try cranking the generator unless the battery was fully charged and to run the generator with a load for at least 10 minutes at least once a month, even in the winter. That was about 3+ years ago and it is doing fine. I am sure you can buy and replace the part yourself, but I would get the instructions first. Good luck.
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Old 03-22-2020, 07:15 PM   #14
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You can buy online a maintenance manual. I have had to change faulty pump twice. You must take generator out of vehicle and remove green plastic casing. Once you do this. You will see internal pump. Excessive heat is main cause for failure. Some have put pump on outside of casing.
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Old 03-22-2020, 08:22 PM   #15
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How do you remove the green plastic casing? I have 1995 Roadtrek 190 popular I cannot figure out how to open that green box.

Thanks
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Old 03-22-2020, 08:36 PM   #16
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Two screws at each end near the bottom. You probably have to remove the unit to get to them and they may be Torx.
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Old 03-23-2020, 01:14 AM   #17
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My BGE onan generator only has spark when you release the start switch.
Any suggestions?
I had the same weird problem with my kV2800 Onan. Turned out to be the magneto coil located underneath the flywheel. When I say underneath, I mean you have to remove the flywheel to get at it. Might be something for you to check out.

I am posting a picture of my unit whit the flywheel removed. The magneto coil is the blue item in that picture. I am also posting a diagram of the KV onan showing the fuel pump location for the persons discussing that.
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File Type: jpg Fig6-1.JPG (83.3 KB, 18 views)
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Old 03-23-2020, 04:28 PM   #18
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from the research i have done it's saying that i have lost half the rotor.
Time to pull it and crack the case.
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Old 03-23-2020, 06:51 PM   #19
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Thanks for all the information regarding to 2800 I am gen
It looks in order to get access to the fuel pump and fuel filter I have pull out the engine body. My problem is the generator runs after put the load start surging seems to me starving for fuel just guessing. Any idea appreciate thanks.
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Old 03-23-2020, 06:59 PM   #20
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Thanks for all the information regarding to 2800 I am gen
It looks in order to get access to the fuel pump and fuel filter I have pull out the engine body. My problem is the generator runs after put the load start surging seems to me starving for fuel just guessing. Any idea appreciate thanks.
IF your generator is "surging", it is classic. The tiny jet(s) in the carburetor have varnish from the fuel drying out, ethanol is worse yet when it dries out. Many use Seafoam in the fuel to try and eliminate the varnish. Worse case is a new carburetor. Some use Seafoam to prevent the varnish when the B is not being used.

Don't recall someone posting a recording of classic 'surging'.

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