Onan marquis 5500 generator
Purchased a motorhome recently and the onan generator is acting up? Starts and seems to run fine but when you fire up one or both ac's the generator seems to bog down for 2 seconds then idles right ba...
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It should bog a little when a heavy load is first applied, but once the A/C is running, it should stay stable. If it is continuing to bog afterwards, most likely a dirty carburetor. It's starving for fuel under load. You might get lucky, and find that it's just a dirty fuel filter.
While this is a very popular generator, no rebuild kit is available that I could ever find. Ultimately, I replaced the carb on mine. Not overly complicated. Runs perfectly once again.
Here's a video of the job: https://youtu.be/DUEthYuKGMk
Source of parts:
Onan carburetor: https://amzn.to/2HgqRFk
Onan air filter: https://amzn.to/2tO8C22
Onan fuel filter: https://amzn.to/2SM1KMK
Onan fuel pump: https://amzn.to/2tNtvKM
Onan oil filter: https://amzn.to/2XI4luC
While this is a very popular generator, no rebuild kit is available that I could ever find. Ultimately, I replaced the carb on mine. Not overly complicated. Runs perfectly once again.
Here's a video of the job: https://youtu.be/DUEthYuKGMk
Source of parts:
Onan carburetor: https://amzn.to/2HgqRFk
Onan air filter: https://amzn.to/2tO8C22
Onan fuel filter: https://amzn.to/2SM1KMK
Onan fuel pump: https://amzn.to/2tNtvKM
Onan oil filter: https://amzn.to/2XI4luC
