I have antifreeze coming out of my carburetor drain

I think I have a problem. What will I need to do.

What kind of vehicle or tractor are we talking about?

drain the Anitfreeze out of your fuel tank???

If the carburetor is a Marvel Schebler, i.e. the only one that I know of that has a drain hole in the bottom near the intake side; which was generally used on early flathead fords; 9N or 2N. This usually means that either you have a blown head gasket or a cracked head or block with antifreeze leaking down the intake manifold and draining out the bottom of the carburetor. A compression check is the first test. If all cylinder pressures are relatively equal; try a can of bars leak. If this stops the leak the the next step is to remove the head and fix whatever is allowing the antifreeze mixture where it shouldn't be. If left sitting this condition will cause severe corrosion in the leaking cylinder and eventually, though not too long, cause the engine to seize up. Usually this condition also will make the engine run hotter than normal. Good luck with your problem.....

KM

The tractor is a 8N (1951), side distributor. It was running bad so I put points, plugs, etc. I also added a coil. It ran good for 10 minutes. It quit. I pulled the drain plug and got a shock.

Probably have a blown head gasket and you need to pull the plugs and spin it over to see if you have a cylinder or 2 full of coolant and if you do you need to clean it out yesterday

Been a while since I've been into a late 8N, however, the carburetor if I remember correctly has two chambers; one is the fuel bowl, the other the air intake passageway. On earlier MS carburetors, on the intake side was provided about a 1/16" hole in the bottom for overflow drainage when the carburetor flooded. Check to see that if the hole is there and that it is open and if there is antifreeze solution in the intake pipe. For the fuel bowl to have antifreeze solution means either that someone accidently got antifreeze in your gas can or that the entire bottom of the intake side has filled with antifreeze solution and it has spilled over into the fuel bowl. The gasket between the fuel bowl and air passages is notoriously poor and if the intake air passage filled with antifreeze it is highly probable that you wound up with antifreeze in the fuel bowl. If yours doesn't have a drain hole, disconnect the intake pipe from the air cleaner at the inlet side of the carburetor to look for antifreeze solution on the intake side. Still means most likely however that the antifreeze source is a leak in the cylinder or cylinder head allowing antifreeze to drain back down the intake manifold. A blown or leaky head gasket is the most probable source and usually manifests itself as a dead miss long before you see other symptoms. Before you spend the 12 hours or so on exploratory surgery be sure you x-out other possibilities like contaminated fuel, water leak into the oil bath air cleaner (if it sits outside). Try if possible to isolate the offending cylinder with a leak-down test. Short or remove spark plug wires one cylinder at a time to find the miss that usually accompanies the ailment. Look also for antifreeze in the oil as usually it finds its way into the pan. Verify that the radiator is full. All else fails; pull the head and look.

KM

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