RV Generator Does Not Start? Try This Fuel Pump Test

Here is a simple DIY test to determine if the fuel pump in your RV generator is working properly. If your Onan RV generator does not start or suddenly stops after about 20 minutes, your fuel pump could be failing. This happened to me right before a trip and I had to replace the fuel pump and filter. Save yourself a costly repair and replace the fuel pump yourself.

Replacing your generator fuel pump and filter is a DIY project that you can perform. You'll need a few basic tools and little patience.  I'm not a mechanic but replaced the fuel pump and fuel filter on my generator without any real trouble. I'll show you how I did it and tell you what tools you'll need. 

Equipment Trouble Can Really Ruin An RV Trip

Excercise and test your generator each month and perform regular oil changes. If you do this, you'll identify problems before you hit the road. 

 

Parts and Tools You'll Need

Replacement Fuel Pump

This is the replacement fuel pump I used for my Onan 4KW MicroQuiet generator. It has been working great.

Buy it on Amazon (or search for your model)

Replacement Fuel Filter

This is the replacement fuel filter that goes with my Onan 4KW MicroQuiet generator. Simply screw the filter into the incoming end of the fuel pump.

Buy it on Amazon (or search for your model)

Replacement Air Filter

This is the replacement air filter for my Onan 4KW MicroQuiet generator. Simply take the old one out and put this one in. It's that simple. It's a good idea to replace it once a year when you change your oil.

Buy it on Amazon (or shop for another model)

T-30 TORX Socket

You will need one of these Torx bits to remove some electrical components and access the fuel filter. You will also need one to change your oil, so why not just add it to your RV toolbox.

Find TORX sockets on Amazon | Find one on eBay

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