No one is going to believe this!

Anonymous-0 · Dec 26, 2008

My Farmall H won't start this winter unless I heat the carburator first. Same carb has been on the tractor since rebuilding it in 1998 and never had trouble until this winter. I have even tried starting fluid but it still refuses to start until I use my heat gun.
I pulled the carb and cleaned it but still have to heat it.
Anybody got any ideas?

Dellbertt · Dec 26, 2008

I think you have a leak. Either in the intake manifold/block or in the carb/intake connection.
Now that I think on it, you might have some moisture in the gas you bought this winter.
Dell

Mark (EC,IN) · Dec 26, 2008

I'm going to take a stab in the dark here....but I'll bet it's a GAS thing instead of a CARBURATOR thing.

................Mark

Clarkbug · Dec 26, 2008

I would say what Dell did in regards to the water in the gas. That would explain why you have to heat it... Is there any water in the sediment bowl at all?

Farrview · Dec 26, 2008

I'll try some alcohol in the gas but I'm using the fuel from the same storage tank to run my M and not having any problems. I figured that with gravity feed from the gas tank and with the glass reservoir, water shouldn't be a problem. Especially since I cleaned the carb. But I'll try anything!
Thanks,

Farrview · Dec 26, 2008

No water in the sediment bowl.

Dellbertt · Dec 26, 2008

Could be you got water in the tank of that particular tractor somehow.

Farrview · Dec 26, 2008

Your probably right about the water. Have to try alcohol tomorrow........had enough cold for one day.

LMack · Dec 26, 2008

If you haven'd done it already, try draining the carburator bowl and cleaning and draining the sediment bowl. Blow out the gas line and let a generous amount flow through before you put it back on. (Be sure to catch the waste you know to protect the environment.) Use some of that gasoline addative that clears moisture and gel from the carburator (for old gasoline). In the old days we just had to drain the tank and put in new gasoline. Too expensive to do that now. As posted by others you still may have a leak in the intake gasket or a rust hole in the intake. The carburator gasket itself may have gone bad. Remember it has been over 10-years since you did a rebuild on that carburator. I would put up the torch however before you hurt yourself or burn down your shed. larry m

JakeE · Dec 26, 2008

you use a heat gun on the carb?????????????????? are you for real????????????

Janicholson · Dec 26, 2008

A possibility is that the float is contacting the side of the bowl and the heat changes it enough to let it drop and open the fuel into the carb.. Just possible. JimN

Farrview · Dec 26, 2008

My "heat gun" is not a torch, its similar to a hair dryer. I'm getting old and slow but not yet gotten stupid enough to blow myself up.
Thanks all for the help, gives me plenty to do tomorrow.

Farrview · Dec 26, 2008

My "heat gun" is not a torch, its similar to a hair dryer. I'm getting old and slow but not yet gotten stupid enough to blow myself up.
Thanks all for the help, gives me plenty to do tomorrow.

Rumplestiltskin · Dec 26, 2008

Is it possible your storage tank has some water in it? If your M got the good stuff from the top of the tank (like a 5-gallon can, for example) and your other tractor got the water from the bottom of the tank, that would make a ton of difference.

If it"s a small enough tank that you can empty it into a clear container (or maybe take a one-gallon sample), it will be easy to see a dividing line between the gasoline and any water that may be present.

Mark W. in MI

Brownie 450 · Dec 27, 2008

When you heat the carb, do you hear the float drop?? Just wondering--my father-in-laws brother had a 460 with a similar problem. They would heat the carb a little & then could hear the float drop---then it would start. Never did get to work on it because he had a farm sale soon after. Always suspected the float was rubbing on the bowl.

Anonymous-0 · Dec 28, 2008

had same problem some years back on a 350.it was bad gas.drained fuel tank & carb,refilled with fresh gas.problem solved

Anonymous-0 · Jan 9, 2009

Try putting a red handkerchief over the gas tank filler pipe and blowing hard in the gas tank - Always worked for Dad -

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