International 544 gas only starts when throttle closed

andy r · Jul 13, 2021

I don't know if this is a symptom that can be diagnosed or not. My International 544 gas will only start when the throttle is moved to the minimum or closed. Then as it begins to fire at the minimum throttle setting you can slowly advance it maybe 10%. Once it sets there running for a while it will run at normal operating rpm's. No way will it start at 1/2 to full throttle. Doesn't matter if you choke it or not. Thanks.

old · Jul 13, 2021

Ha this just started to happen or has it always been this way?? Could be the nature of the beast

Steve@Advance · Jul 13, 2021

Check the spark quality, should have 1/4 inch spark to ground at the plug end of each wire.

Take a look at the plugs, if worn, fouled, or have been in a while change them just to say you did.

Weak spark can be caused by points out of adjustment, bad wires, bad condenser (often bad new out of the box), bad cap/rotor, weak coil, or wrong coil, coil/resistor combo.

Janicholson · Jul 13, 2021

At cranking speeds, the starter turns the engine much slower than normal idle speed. If the throttle is at all advanced, the governor sees this speed as needing full throttle. So the engine starts well when at idle, but not at all when the throttle is open. You also need to determine if the choke is actually working. With the hose off of the intake to the carb, the choke should be easily seen. It needs to be basically shut with the knob out, and fully open when pushed in. Electrical issues can exacerbate the problem. Jim

marloweg · Jul 13, 2021

dose it smoke real bad at first if so your carb is flooding and filling the air intake hose with gas and if you open the throttle to fast it will flood the engine

flying belgian · Jul 13, 2021

My windrower with the slant 6 Chrysler is that way. Always has been. I don't really know why. I've probly owned it for 30 years. I don't plan on trouble shooting it. Always starts and runs nice. You know what they say--if it ain't broke, don't fix it.

Traditional Farmer · Jul 14, 2021

I have a Gravely rider the same way.

andy r · Jul 14, 2021

I do question the spark. I will check into that.

Gene Davis (Ga.) · Jul 14, 2021

Gasoline engines pull a better vacuum at idle setting when turning slow with starters. sometimes this is a sign of poor compression.

Bill(Wis) · Jul 14, 2021

Our '49 John Deere A gas burner was the same way for years. Underwent several engine overhauls over the years and that never changed. We never worried about it.

roy prins · Jul 14, 2021

I have a 544 also and it is the same way -- always has been - I have tuned it to perfection and it doesnt change -- so I just live with it !!Its a real chore to get it to fire when its zero degrees outside -- Roy

Super H Mike · Jul 14, 2021

I had that same issue with an H, turned out to be the choke shaft was snapped off. You couldn't see it without taking off the intake hose and the choke rod felt normal but it was broken.

International 544 gas only starts when throttle closed

andy r

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old

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Steve@Advance

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Janicholson

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marloweg

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flying belgian

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Traditional Farmer

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andy r

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Gene Davis (Ga.)

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Bill(Wis)

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roy prins

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Super H Mike

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