24 horse honda problem

[mac]

My honda is surging at full throttle,with no load. you put it under a load and it runs ok,then when you throttle back it will all most die??? ??? ??? :-\

[Fla._Deadheader]

  Sounds like water or dirt in the carb. ??  My 20 Horse ran kinda like that. Mine finally quit and needed the carb removed and cleaned. Try a drygas type fluid.

[ladylake]

Air filter clean?   Steve

[woodmills1]

open up carb top careful and use paper towel to take out gas rust and dirt.  It wont leak on assembly if you are careful with gasket.

[swampy]

The one on Homey started doing that and on the bottom of the carb there is a electical wire that goes to the solenoid that pulses as the engine is running. Take the carb off and take that solenoid out and make sure it is CLEAN and moves Very freely. If it sticks any at all it will make the engine run bad at idle and not get all the gas it needs at full throttle. I did this and it runs good now. There was a little bit of water in the tank and when it gets to the carb it sits in the bottom, when it sits for a while it will start to gum up. Be sure to use a non residue carb cleaner and do not use any lube on it as it will gum up quicker.

[Tim L]

I had a problem with my 24 honda last year. The solenoid for the low oil fuel shut off (bottom of carb ) stuck and had to be cleaned. This year at first starting it ran doggy so I gave the fuel a healthy dose of Mystery oil . After about 15 minutes the engine came into it and has run fine since.

[mac]

I had the local small engine guy come out .He took the carb off cleaned it,checked the coils and valve clearance.Started it up and samething,surgingat full throttle.He gave up. :'(

[Tim L]

mouse nest under cover ?

[Tim L]

Did you try to by-pass the solenoid ? It might be worth a shot.

[solidwoods]

If the solenoid is on the carb body, its the fuel shut off.  If it doesn't open all the way then you will have carb bowl starvation.

Water in the gas is usually the culprit.  It causes corrosion and fuel fungus.
The engine man that took off the carb,,, did he open the carb and clean the bowl?
If corrosion is in the bowl,, a flake of it can get into the high speed fuel path and cause low fuel at high speed.

The engine has low speed problem also,,,, could be corrosion like above.

Engine oil low sending units go bad yes but their symptoms aren't surging,, its no spark no run symptoms.  even though they can have vibration failure symptoms also ,, the check for bad low oil sending unit is disconnect it and check the engine run.

Outdoor small gas tanks are notorious for collecting condensation and making a pool of water in the tank,, then the engine sucks it up causing corrosion in the bowl problems.

Loose wire causing ignition short,, no.

jim