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Old 06-26-2018, 11:32 PM   #1
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Default Genset Initial Starting Eratic

I have a 2002 Leisure Travel camper van with an Onan MicroLite 2800 GenSet. The unit starts fine, BUT for only for a few seconds and then it dies. If I wait a minute or two, it will restart again and run for a longer time, maybe 15 seconds and die again. If I repeat the procedure with a wait time in between, it will again start and run even longer before dying. However, usually by the fourth attempt it will start and keep running. When it keeps running, it works just fine and does not die--everything seems just fine. But this whole procedure has been going on repeatedly during the whole season.

What is causing this problem and how can I resolve it?
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Old 06-27-2018, 01:27 AM   #2
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Google Red Rover Onan Trouble shooting guide
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Old 06-27-2018, 03:17 AM   #3
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I would start with fuel as in fuel pump or cracked fuel line.
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Old 06-27-2018, 09:46 PM   #4
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Fuel was my thought, too, but there is a good stream of gas from the fuel pump. I would like to change the fuel filter, but everything is so tight, that I cannot do it. I even found a YouTube video that started to change the filter, got it off, and he could not get it reinstalled. He closed the video saying he thought he would have to use a Sawzall to cut off the front portion of the GenSet panel in order to get to the bottom clamp for the filter. I can't even find the fuel line going to the GenSet--the clearance underneath is so tight.


I failed to mention that after a few attempts of starting the GenSet, the amount of time it runs will increase, until the final attempt when it keeps on running. Usually if it runs for a minute or so, it keeps on running. Hence, I have wondered if was something connected to building up voltage not quickly enough to keep it running, rather than a fuel problem. However if I try too quickly between attempts, it will not start at all, but if I wait for a minute or so, it will start for a few seconds or more. So far it has never failed to keep running, but it is frustrating to have to try up to a dozen times.

Do these comments give you any additional insight or ideas regarding the problem.
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Old 06-27-2018, 09:51 PM   #5
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I have downloaded and saved the troubleshooting guide. The main possibility from the guide is an air leak in the fuel line. But I can't even find the line! How do people work under their Class B motorhomes??? I guess I will have to buy some ramps, but I am not sure they will provide enough extra clearance in the middle of the chassis.
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Old 06-27-2018, 11:19 PM   #6
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Start by changing the inline fuel filter, cheap & easy.
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Old 06-27-2018, 11:33 PM   #7
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There is a vent tube that goes to the carburetor.
Make sure it is not blocked.
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Old 06-28-2018, 03:00 AM   #8
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Hondo - It may be cheap, but it isn't easy. One cannot get to the bottom of the filter to reattach the clamp--at least I can't. There even was a YouTube video where the presenter found the same problems and gave up on the video, saying he was going to cut out the front of the GenSet enclosure.
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Old 06-28-2018, 08:47 AM   #9
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1. Check before starting: check battery connection; check oil adequacy (observe oil gauge, between maximum and minimum); check diesel fuel (diesel should be selected according to actual ambient temperature).

2. Insert the key into the boot disk, then go to the "run" file, observe the diesel engine display table (figure 1 / 2) and start if the cylinder thermometer and the oil thermometer are normal (not to the red area); if not, The corresponding sensor damage. Note: the oil pressure meter because of no pressure before startup, can not be in the normal zone, do not affect the start.

3. Engine: rotate the speed switch (figure 1) to "low", then rotate the unit key to the "start" file, release the key after starting.

why not directly ask your genset supplier for help to solve the problem?
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Old 06-28-2018, 03:47 PM   #10
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You m ight have to drop it then to gain access.
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