NAA not running right

[Anonymous-0]

My NAA was "supposed to" have had the carb rebuilt just before I bought it and it did crank and run good. Lately it has been hard to crank, flooding out. Fuel will start dripping down on the oil filter. When it does crank, runs fine at idle but give it some gas and it goes to popping and does not run smooth at all, return to idle and all is fine. What can I check in the carb? I assume this is where the problem is as the plugs look good.

 

[CENTAUR]

MAKE and MODEL of carburetor is?If it is ajustable,do it. CENTAUR

 

[old]

Float maybe sticking and or the float has a hole in it. Main jet set to rich or to lean. Just because the carb has been rebuilt does not say they got it done right its easy to miss one little thing on them and cause a problem
Hobby farm

 

[Ken from Pa.]

If I were you , I'd pull the big rubber vent hose from carb to aircleaner first . It maybe full of gas from float sticking . Then pull carb , either rebuild or check the float & replace & try it without the vent hose to see if gas runs out after it runs abit . If it does , you again have a sticking float . My 640 did the same thing aftera rebuild a few years ago . Its good now . God bless, Ken

 

[Anonymous-0]

I don't know the model but it is a Zenith carb.

 

[souNdguy]

Check it for spark.. if spark is good, I'd suggest what Old and the others are saying.. pull the air inlet, and then dink with the main jet.. see if it is way lean or something.. etc.

Soundguy

 

[old]

Doesn't really matter what brand the carb is they all work the same way and will have the same type problem
Hobby farm

 

[dick-mi]

Try tapping the carb body with a rubber hammer to free stuck float.

 

[Anonymous-0]

If it is like our NAA was, there is an gas reserve in the tank, you unscrew the shut off valve to the sediment bowl all the way and you tap into a 1.5 gallon reserve in the bottom of the tank. What happens is the bottom reserve acts like a big sediment bulb. Check to see how much water you got in the bottom of the tank and drain the carb, plug in the bottom of the carb bowl. You could be flooded out with water.