606/1606 gas carb icing bogging down

I have previously noted that the carb throat above the bowl and below the intake manifold used to sweat. Now this winter, it ices up with frost on it(but it still runs). After putting in a carb kit, dist. cap, dist. rotor, and cleaning the gas tank this fall, it will run just fine while sitting and rev up to a fast speed. However to get it to start and run, I have to have the choke closed all the way. After it warms up, I can open the choke a little and it runs even better. I can run around and move bales in low gear all I want with the throttle wide open. Whenever I put it in second gear, it will not even pull its way up a slight incline without bogging down and killing the engine. Then I have to start it with the choke all the way closed and drive in low. It did that during warm as well as now during cold weather. The engine has a fair amount of blowby, but if it will move around in low gear all I want then I don't think that is the problem just moving up to second gear.

The carb is open right now with no air filter setup on it. I am working on adding some type of air filter to it using rubber hose and plastic pipe.

The intake manifold has fairly fresh oil residue around the end bolts at the front and back ends. I suspect there may be an intake manifold leak somewhere which may be the reason I have to have the choke closed most of the time but I'm not sure why oil would appear around those intake bolts and I'm not sure why that would affect power in any gear above low.

This may be two different problems but I am wondering what everybody thinks is going on here. Other that what I listed here, it starts quickly and easily when fully choked.

The temp always seems to come up to about 170 (the only guage working) and the engine seems to be warmed up to a hot temp.

You and Old may have something on the governor. It has a hand throttle and speeds up and slows down whenever I move the handle. It idles along in low gear and speeds up when I pull the throttle handle down but now that I think about it, the throttle response is probably a little slow. I know it doesn't act like a gov control on a Briggs & Stratton. The throttle handle seems to control it directly as opposed to fluctuating according to power needs. Unfortunately I can't look at it while driving in second gear to see what it is doing. Is there a way to check governor operation and syncronization while it is sitting?

Well, I have a few things to look at. I still have to pull the hydraulics off to see what is wrong with the steering but I've already been down that road on other posts here. Thanks.

Keith & Shawn(Special Olympic Champion)

The only things I didn't fix was the broken off idle jet inside the carb. I didn't know how to get the old one out. The case/ih parts man said that shouldn't affect the running of the engine. Also the old electric gas shut off valve was broken and it was converted into basically a needle valve to screw in and out. A case/ih mechanic sold me some extra o-rings and told me open it up till it runs right and use the orings to seal any leaks around it.

• Hobby farm

I can also try to open up the needle/shut off valve coming out the back of the bowl. Past experience tells me it will be hard to start which is why it is adjusted to where it is now. But then I can start it and then open it up some more.

Do you think the carb is the reason for bogging down in second gear?

• Hobby farm