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joe0508's avatar
joe0508
Explorer
Apr 27, 2014

carburator cleaning

I have an onan 4000 watt genset on a motorhome.I would like to attempt to clean the carburator but i have no idea what i am doing.The generator will start but runs rough and surges.If i let it run for several hours it will run mre smoothly and stop surging.I think if i get to things now i can prevent a drive to the sevice station.Can someone tell me how to do this.Remember i have no idea what i am doing.Thanks.

15 Replies

  • joe0508 wrote:
    Ok i will try the seafoam but where can i get it at.I have also heard of a spray called sea foam deep creep that you can spray through the air cleaner housing into the carburator to clean it.Would this be something worth trying in addition to the seafoam in the gas tank?


    sounds like a plan to me. I was going to recommend seafoam but didn't know about deep creep.
    bumpy
  • Ok i will try the seafoam but where can i get it at.I have also heard of a spray called sea foam deep creep that you can spray through the air cleaner housing into the carburator to clean it.Would this be something worth trying in addition to the seafoam in the gas tank?
  • Yaj wrote:
    Use some SeaFoam in your gas tank!
    The stuff really does work. You can use a double dose and not hurt anything, just pour it in, run the generator long enough to get it worked through the system and then let it sit in the carb for a day or 2.
    I have been amazed with the results I have had using it!
    Good Luck!


    Actually, in my previous post, I recommended against additives, but it will not hurt anything to try this first before you go to the expense of a rebuilding the carb. I've never used Seafoam, but if it works great.
  • Use some SeaFoam in your gas tank!
    The stuff really does work. You can use a double dose and not hurt anything, just pour it in, run the generator long enough to get it worked through the system and then let it sit in the carb for a day or 2.
    I have been amazed with the results I have had using it!
    Good Luck!
  • I was a mechanic for many years, and I specialized in carburetor issues in the 70s. I wish I lived closer to you, and I'd rebuild the carb for free for you. But it is not a job for somebody that has "no idea what I'm doing".

    Don't fall into the "snake oil" trap of buying aftermarket additives to try to remedy the situation. Typically, the orifices and jets start to clog with varnish like material, and the only true remedy is to completely disassemble the carburetor, soak it in carburetor cleaning solvent, rinse, and reassemble. This is not a job for a novice. There are many things that can go wrong and believe me, they will. I'd highly recommend you take the genset to a qualified repair facility and have them perform the diagnosis and work.

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