5 Common Onan 6500 Generator Problems (Troubleshooting)

onan 6500 generator troubleshooting
onan 6500 generator troubleshooting

RV Generators are in great demand today, and they are not only hyped without any reason, but they provide you the right edge of utility for multiple sorts of applications that you might have in mind.

These generators are not only great for camping, but will also help you greatly for some BBQ in the backyard that you are hosting or some midnight game you want to play on the outdoors.

Nevertheless, an RV generator would always come in handy and ONAN is making some of the best generators that you can mount on your RV and take anywhere to get the power you need.

ONAN QG 2800i is one such generator that might look compact and easy to carry but it got the right power production on it to source all sorts of needs that you might have for a generator.

This generator got a lot of interesting and innovative features as well that will help you out in making sure that you are having a better experience with the generator and not messing up on anything that you don’t want to.

If you are facing some problem with the ONAN QG2800i generator, here are a few things that you will need to check on.

Onan 6500 Generator Troubleshooting

1) Fuel

The generator runs on fuel and it goes without saying that you will need to make sure that you have ample fuel in the tank for the generator to be running perfectly. Not only the generator needs to have right quantity of the fuel inside the tank, but you will also need to be careful about the fuel quality.

So, you will need to ensure that not only the tank is full but you have the right fuel in it as well and then try running up your ONAN QG2800i again. This will help you out most of the tight corners and you will be getting to run it properly.

2) Carb Cleaner

These ONAN generators are simply the same as any other motor or the generator you get, except the fact that they are small in size and have better power on them than most of the generators. So, you will need to make sure that you are using a carburetor cleaner on the generator by spraying it directly on the carburetor while the generator is running.

This will be cleaning off all the carbon that might be causing your generator to have troubles with the air intake and that is going to help you out perfectly in order to make it all work for you.

3) Check Oil Levels

The motor on generation needs some lubrication to make it sure that the heat generated by the motor is dissipated properly, and the wear and tear doesn’t cause the motor to go out of order in a couple of days. Luckily, the ONAN QG2800i also has a low oil level alert and safety system that will not let the generator start if the oil level is lower than the optimal level.

So, you will need to check on the oil levels if the generator is not starting up and make sure that you are topping it up properly if you feel like the oil levels are getting low and that will help you out properly.

You will also need to ensure that you are changing the oil at regular intervals and that will help you out perfectly in avoiding such issues and problems in the first place.

4) Change Air Filter

The air filter also needs to be changed and you will need to make sure that you are replacing it with a new one at regular intervals. It is pretty easy for you to change the air filter as all you need to do is take off the top cover from your generator and you will find the intake box.

Just remove the clips from your intake box and replace the filter with a new one. This is going to help you out perfectly in order to make the generator work.

5) Reset/Restart the Generator

After you are changing a filter or the oil, you will need to restart the generator as well. It is pretty easy for you to reset the generator as you just have to locate the button on your generator and keep it pressed for 30 seconds to reset/restart the generator and making it work.

3 thoughts on “5 Common Onan 6500 Generator Problems (Troubleshooting)”

  1. I have an Onan Marquis 6500 LP generator I am not getting propane to the carb. However somewhere ontop of the engine under the main metal cover my fuel line comes from the propane . Its maybe 3/4 inch line. However once it gets to the carb it is a larger line. And is not providing any fuel to the carb. My Rv heater and stove are receiving propane. Somewhere ontop of the generator the line size changes. Im thinking it has come loose or something is recently broken stopping the propane from getting to the carb. I definitely have a small propane leak at that point as I can smell it inside the RV by passenger set. Yes the tank is turned off. Any suggetions

  2. hi
    I have an Onan 6500LP Marquis it starts and runs
    I run both AC’s and it hardly shows when I they turn on
    voltage varies 2 to 3 volts up and down constantly
    could this be a problem with the voltage regulator
    or am I worried for nothing


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