Spraying Seafoam directly into Honda 2000 Carb.

I've owned 2 EU2000i gensets, still have one of them, and when the first began surging badly on ECO I did spray SeaFoam directly into the carb throat and it did solve the problem completely. :B The process took ~ 15 minutes, with endless shots of spray into the throat until the engine would almost stall and create huge plumes of white smoke, and just as I was about to give up on the process the carb suddenly cleared and the engine smoothed up instantly. Since then I've always run non-ethanol gas and always treat it with SeaFoam liquid before it goes into the genset's fuel tank. That genset never gave me any further problems so there's no doubt whatsoever that spraying the carb throat with SeaFoam saved me from having to tear down the carb, despite what the "experts" may say. :S

For best results, start and run the motor with the choke on. Do it for 1 or 2 minutes, every hour, for a few days. The choke being on will suck more fuel through the jet, creating a better flushing effect to get all the jets cleaned and devarnished.

If that doesn't work, time to tear down the carb and clean the whole thing up properly, with carb cleaner and a pressurized air hose in the jets.

I will wait and give the gas with Seafoam time to work.
Thanks to everyone!!!
Pat

This is like cleaning and painting a clogged radiator. On OH-NAN! generators I used to use Berryman Chemtool. Dribbled it onto the throttle shaft and let motor vacuum suck it into the engine. Dissolved gum and varnish on the throttle shaft which made it less sticky for the governor to fight.

On carb rebuilds I sometimes had to soak disassembled carburetors overnight, rinse in boiling water, then use a rubber tip blow gun at 140PSI to force gunk from tiny passages. How any of that is supposed to happen with Mouse Milk alone is beyond me.

Read the instructions on the SeaFoam. For cleaning, you add 2 oz/gal. to the gas. Spraying into the carb intake does no good. If you want to try a "hot shot" to the carb, pull off the fuel line and pour an ounce or two into the line and re-connect. The best thing you can do is to open up the carb and spray a carb cleaner through the jets.

I don't think it will do much good unless you can force it through the jet. To do that you need to remove the bowl and blow cleaner upward through the passages.

tvman44 wrote:
Yes, what I did with a leaf blower was to spray Seafoem into the carb with the engine running wide open till it flooded out and died. Then let it sit about 15 or 20 minutes and restart and it smoked like crazy but smoothed out and ran great afterwards. :)

You are referencing a different engine type, one is two-cycle and the other is four cycle. The carburetors are also totally different in construction.

Unless you have a bunch of grime inside the carburetor throat, it is a waste of Sea Foam. Surging or poor idling is usually a clogged main jet. The best solution is to tear down the carb and clean the jets and orifices. You could also wait to see if the Sea Foam clears the obstruction in the jet but sometimes it will not dissolve whatever is clogged in the jet.

You can do that but all it will do is clean the throttle plates as it is not going into the jets.

Yes, what I did with a leaf blower was to spray Seafoem into the carb with the engine running wide open till it flooded out and died. Then let it sit about 15 or 20 minutes and restart and it smoked like crazy but smoothed out and ran great afterwards. :)