SMTA troubles still

LaDuke Farmall · Jan 18, 2014

My SMTA will start right up and die after a few minutes. I am out of ideas. I rebuilt the carb, cleaned out fuel lines, bowl, and screens. New coil and points. Tested for spark never looses spark. It sounds like its running out of fuel but the carb has lots of fuel left in it when it dies and it fires right back up. anyone know what it could be?

Rumplestiltskin · Jan 18, 2014

As a bit of a long shot but an easy test, I'd remove the fuel cap and see if the problem goes away.

Mark W. in MI

big jt · Jan 18, 2014

Couple of ideas.

Did you replace the condensor?

Are you sure you got all the passages in the carb cleaned out?

jt

by the way voice of experience on both of these BTDT

LaDuke Farmall · Jan 18, 2014

the condensor is new and i did the carb a second time thinking i missed something

LaDuke Farmall · Jan 18, 2014

I tried that too. didn't change anything

Bob M · Jan 18, 2014

If it still has spark when it dies, problem's gotta be insufficient fuel flow into the carburetor.

Try removing the drain plug from the bottom of the carb bowl. You should be rewarded with a continuous, SOLID stream of gas out the bottom (flow should be sufficient to fill up a coffee can in a minute or two).

However if the just drips or dribbles out, something is restricting flow into the carb bowl.

Look for debris partially blocking the fuel tank outlet, a plugged screen in the sediment bulb, a plugged screen behind the carb fuel inlet nut, something caught in the float valve seat, or the float binding/set too low.

gene bender · Jan 18, 2014

Did it do the same with the old condenser mite want to put it back new ones are a mess where did you get the new one.

teddy52food · Jan 18, 2014

Was the condenser tested? I find leaky ones right out of the box.

Charlie M · Jan 18, 2014

Maybe the outlet from the tank is clogged. Had that happen a couple of times to me.

Icuby · Jan 18, 2014

Ran into about the same the other day. The repair was to remove oil bath cup and found that it was clear full of ICE, clear up into the air cleaner pipe. Can not suck enough air that way.

heavyhaulertoo · Jan 18, 2014

Mine was a bad coil. would get hot and stop and start right up in 1 minute.

GordoSD · Jan 18, 2014

Drop the bttom half of the carb and check the float level again. And make sure you are measuring according to the manual. Sounds like the float is closing the needle valve way too early.

James Williams · Jan 18, 2014

I agree with Gordo,Ive had a couple F series tractors that did the same thing,but after shuting off a couple times it would finally keep running

jimmy

rustred · Jan 18, 2014

check outlet at sediment bowl, as I have seen them plugged and hardly allow gas through, as your tractor has these symtoms.

Brian Schmidt · Jan 18, 2014

I'd second that. Drop the oil bath bowl off and try again.

If that don't help, pull out the drain plug in the bottom of the carb. Install a hose barb and a clear section of hose. Loop it up higher than the top of the carb. Turn the gas back on and observe the fuel level while off and running. This will help determine if fuel is being starved to the engine.

2 pipe · Jan 18, 2014

Something else you might try is to put a jumper wire on the coil, another long shot but maybe a loose wire or bad switch and the viberation of the engine causing it to break contact. Worth a shot maybe. Good Luck!

SMTA troubles still

LaDuke Farmall

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Rumplestiltskin

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big jt

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LaDuke Farmall

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LaDuke Farmall

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Bob M

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gene bender

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teddy52food

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Charlie M

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Icuby

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heavyhaulertoo

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GordoSD

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James Williams

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rustred

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Brian Schmidt

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2 pipe

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