super c blows raw gasoline through exhaust stack

I have a super C, I have had for years. today, I have a problem I have never had before ever.

The tractor had been sitting for a couple of months. when I tried to start it, it would hit, and die right away. instead of trashing out my starter, I decided to pull start it with the farmall B, thinking that it may have flooded.

I know this old tractor well enough, that if it dont start right away, SOMETHING IS WRONG! a quick check of the firing system, revealled nothing amiss.

When I pulled it, & put it in fourth, it blew raw gas all over the tractor, out of the exhaust, and down the side of the motor!

I shut off the igition, knowing a spark at this point would probablly blow the tractor engine apart.

I shut off the fuel, and pulled it in gear until it quit blowing gas, turned the igition back on. she hit a couple of times, so I turned the gas back on, and she would not hit a lick, & started blowing raw fuel again.

The only thing I can think of is the carb, maybe the needle stuck open. however, it seems to me that a flooded carb would leak fuel everywhere.but it dosent.

Im very worried about my ol"girl, I know I will have to change the plugs, and oil, and clean out the intake.

has anyone had this happen to a tractor? If so e-maile me asap, [email protected] thanks.

Make sure it is actually getting spark. At least clean the points and make sure they are set to .020"
The plugs are probably gas fouled and need to be heated with a propane torch to make them fire. I would say that it got flooded from no spark. JimN

Did you remove the bottom of the aircleaner as your gas must have leaked thru the needle and then filled the aircleaner up thats the only way you are getting gas when you pull it. Need to get a new needle and seat or just shut the gas off at the tank when you are finished let it run until the engine dies then remember to shut the sw off. See with the aircleaner filled with gas when you pulled it it sucked the gas from the air cleaner into the engine.

Ice in the air cleaner cup blocking air?

Thinking about this---there has to be air flow from the air cleaner up through the manifold into & through the engine to get raw gas out the stack. How is the gas getting into the engine in such large volume?? I suppose that if the gas tank were full, the gas level would eventually get to a level that would allow it to run into the engine through the intake manifold if the needle & seat were leaking.
AS Gene suggested--turn off the supply at the bottom of the gas tank & see what happens.

Easy way to prove that the needle is sticking open: Remove the air cleaner from the carburetor and watch.

Things are probably gunked up enough that everything is sealed up tight and the fuel has nowhere to leak out. Thus, it can only get sucked into the engine.

Probably just a stuck float.

By the way, the worst thing that would've happened is the tractor would've caught fire from the fumes emanating from the gas that was on the tractor. No explosions. No engine blowing apart. There wasn't enough air in the engine to support an explosion with all that fuel in there. That's why the old girl wouldn't run... Even if you stuck a lit match in the spark plug hole, it wouldn't have exploded. The match would simply go out for lack of oxygen.

So how cold is it where you are? Flooding is a bigger issue in colder weather. Gene and Jim have the best advice from my recent experience. If you have spark and you are flooding that badly my first guess would be a carb problem combined with the a weather issue, but I don't know where you are. Why did you turn the gas back on if it started to fire with it off? Get it running and then turn the gas back on. Not like it is starving for gas! I have one tractor that will only start in cold weather if I do this.

Hi I work for Don L, Rusty Acre in the Case forumn. My favorite Case loader tractor wouldn"t start after it got below 20 above here in so Mn last week, because water had frozen in the bottom of air cleaner. Cleaned and it started right up. Dave

Thanks for all the input/comments I start at the carb/breather & work from there today. will let you all know what i find.

only tractor people will undeerstand the following comment...........My babys sick! I cant rest until she"s well again!

Cheers
Andy

Turns out the problem was that the breather was FULL OF WATER.....and the whole mess had frozen even up into the carb intake!

The engine simply could not get any air. I removed the breather, set in in a washpan behind our wood stove.

Meanwhile back at the tractor,

I changed the oil, spark plugs & points. after I reinstalled the breather, she fired right up first try.

What I don"t understand, is that tractor has set outside many times before, and the breather has never filled up with water (it has the cap)

Humm..wonder of this is the work of the nehborhood kids???

Thanks for the help Guys!
Andy

Mushroom cap or the swirly one with jar?

My MD, which lives far far away, sat outside at the farm last winter due to a malfunction and we couldn't move it. (Someone was supposed to take care of the problem, but they came down with thyroid cancer) And of course it rained a lot. Everything seemed normal when we got to it the next spring. It fired right off on gas. Switched to diesel and all hell broke loose. Running terrible and white smoke blowing out and noisy as all get out. Needless to say it was quickly shut down. Also needless to say, was very puzzled at this point. Pulled the oil bath and it probably had over a half gallon of water added to it. The high flow air on diesel was sucking the water through the engine, which didn't happen on gas side. Fortunately it didn't seem to hurt anything. At least from what I can tell.

Point is, it had(!) a swirly cap, and it turns out the top on the danged thing acts like a little dish to collect water. That little rivet in the center provided the necessary leak, and that as they say, was that.

Your experience may vary. :wink: