My RV's Generator Is Not Getting Fuel
by David Apperson
I have 2004 Winnebago Brave with and ONAN 5500 Generator on-board. The fuel pickup from the Chassis does not pump fuel.
I connected an external boat tank to the pump and the generator runs great. Is there a filter in the tank that could be clogged or is the pickup tube bad?
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ANSWER: Hi David thanks for submitting your question on our Ask An RV Question Page.
First the good news in all of this is that you verified that your generator is actually working.
I am pretty sure that the fuel feed problem is not going to end up being the fuel pickup in the tank. Listed below are a few of the things you should check that most commonly cause fuel not to get to the generator.
* First verify that your motorhome has more than a 1/4 tank of fuel. If you have a 1/4 tank or less of fuel your generator will no longer be able to get gas from the gas tank. This is a built in feature on most motorhomes to prevent the generator from using all of the RV's available fuel. This way you will always have enough fuel to get to a filing station. (By the way this is the most common cause of this problem). Just add fuel to the tank and try starting the generator again.
* Your model Onan Generator (pictured at the top of this page) may have two fuel filters. One underneath the carburetor which you may or may not have
because it has since been replaced by an adapter due to this filter leaking fuel into the generator compartment. The second filter should be on the fuel line leading to the fuel pump.
I cannot tell you for sure if there are any other in-line fuel filters or not you are going to have to inspect the fuel line leading from the tank for additional filters.
* While you are inspecting the fuel line for additional in line fuel filters you should also closely inspect the fuel line for any cracks or leaks. Cracks or leaks in the fuel line will not allow the fuel pump to create enough suction to move the fuel from the fuel tank. Replace the fuel line as needed.
Again the items above are the most common cause of the fuel feed problem you are experiencing.
I hope this helps.
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