Ford 2000 3-cyl not starting - carb?

After running well most of the summer, I went to start my '66 Ford 2000 3-cyl.

1) It cranked well, but never fired.
2) I upped the throttle a little bit and when I cranked it, I saw quite a bit of gas come out of the carburetor. With this, I ruled out the fuel pump.
3) I assumed it must be flooded, so I shut off the gas at the shut-off valve and cranked it with the throttle still up. Didn't get anywhere that way, so I went the other direction and checked the spark.
4) I was getting a good consistent 1/4" jump on the spark.
5) I pulled the air hose off the carb just to make sure it was getting plenty of air, but there was no change.
6) I pulled a spark plug and it was very dry, so there doesn't appear to be any fuel making it into the engine.

Since choking it with the throttle up causes gas to run out the bottom of the carburetor yet the spark plugs are dry, should I assume that the carburetor is fouled up, or is there something else I should look into first? (btw - it is a Holley carb, so I am guessing it is the original and from other things I've seen, I doubt anything on this tractor has had much maintenance over the years)

What's in the second picture? To ensure it's the carb, get a can of
starting fluid and shoot the air intake while cranking with your
normal throttle opening. If she lights off (and dies) put a kit in your
carb. If she doesn't you may have spun your distributor (gear?) but
you should at least get some sputtering and coughing.

Mark

We have a 2000 gas that did the same thing. Would
start harder the colder it got outside. Finally
realized the timing was retarded too far. Got the
timing set to specs and start much better.

When you put a an updraft carburetor together with down pull gravity, If the motor doesn't fire up in about three seconds of cranking, as soon as you release the key or start button the gas that is suspended in the air in the carb and in the manifold is coming back down and appears at the carb intake. Since you have air and spark but no fuel in the cylinder the most likely culprit is lack of fuel. When you increased the throttle you decreased the fuel air mix when what you need is to increase it. Try choking it enough to get the plugs wet, and if you can't get them wet you need to go into the carb.

(quoted from post at 14:57:42 11/01/14) What's in the second picture?

Click to expand...

That is my spark tester. I set it to about 1/4" gap and plugged it in between the spark plug and the spark plug wire. It was consistently producing a good spark. I shot video and then extracted the frame that showed the spark.

Ok. That's why I couldn't recognize it.

Mark

Great test of spark...

Again,, you need to choke the snot out of an updraft carb as the mixture is heavier than air.... you should crank at full choke till it fires and then open it just a bit to help it run.. then after a few seconds ease the choke to half for about 3 to 4 minutes. Sometimes if its really cold you leave it at half for 5 to 6 minutes before you can ease it off.

throttle needs to be just a bit above an idle when cranking..


make sure your choke goes FULLY closed by verifying the adjustments on the cable.



All of that said, the external_link gas probably has the jets goopped up and you will need to clean it and spray cleaner though all the ports... verify the needle jet and float is free letting gas in and then stopping as needed.

You need to be here adjust the tip if the screw to the red line...