Sea Foam for motorcycle that won’t start [SOLVED]

Asked by Don K. In Virginia

I think I have moisture in my motorcycle gas tank as there’s not much gas in there. What would be a good amount of Sea Foam to pour in the tank? And will this help get the bike running ?

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Jim D.
Jim D.
9 months ago

Thanks for the question, Don. Sea Foam Motor Treatment will help with small amounts of moisture in a gas tank.

If your bike is carbureted and isn’t starting due to a gummed up carburetor or other gum/varnish issues in the fuel system, Sea Foam will help clean it up and get it running again. Most small engine problems are caused by gum and varnish.

I’d get a can of Sea Foam High Mileage or Sea Foam Motor treatment and follow the instructions below (edited slightly from our “how to clean a gummed-up gasoline carburetor) :

  1. remove the old fuel from the tank, then drain the fuel from the carburetor (usually a screw)
  2. add a cleaning dosage of Sea Foam to an empty tank followed by a small amount of fresh fuel (1 to 2 ratio of Sea Foam to fuel)
  3. with Sea Foam mixed in the tank fuel, crank a few times to draw the fresh fuel and Sea Foam into the carburetor
  4. then let the engine sit overnight to allow the Sea Foam to dissolve any fuel residues from the carburetor (older or excessive gum/varnish may need to soak two to three days)

Once the engine starts, the Sea Foam in the fuel will continue to clean and help restore lost engine performance. Then you can add 1-2 ounces per gallon to take care of any moisture in the tank.

Check out the how-to instruction sheet for details…

https://seafoamworks.com/uploads/public/resource-library/2022/07/HOW2_GummedUp-Carb.pdf

If that doesn’t match your bike or you have other questions, don’t hesitate to let us know!

Hope that helps!

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