Still fighting this dang carb. I can get it running great at high idle but smokes at low idle or almost clean at low idle and dies at acceleration. I rebuilt the carb with a kit from MacDonald carb. I soaked the carb in carb cleaner and all passages are open. It was dripping gas and leaving black dots on the hood at startup before I rebuilt the carb. I adjusted the float to 1-5/16" per the instructions. Is this correct? I did disconnect the air intake to rule out the oil breather. If I leave the gas on it will not flood the carb either. When the tractor is running I could hear what sounded almost like gargling or bubbles.
I am thinking that I need to set the float lower (or larger measurement from the throttle body to the bottom of the float when inverted), that the fuel level may be a bit too high yet. The air going through the idle jet (not the needle valve, the open passage that goes from above the butterfly valve to the load jet) is sucking fuel with it. Currently I have to have the idle needle valve screwed all the way in and the position of the load needle affects the low idle performance.
Does this sound like a plausible situation?
I am thinking that I need to set the float lower (or larger measurement from the throttle body to the bottom of the float when inverted), that the fuel level may be a bit too high yet. The air going through the idle jet (not the needle valve, the open passage that goes from above the butterfly valve to the load jet) is sucking fuel with it. Currently I have to have the idle needle valve screwed all the way in and the position of the load needle affects the low idle performance.
Does this sound like a plausible situation?