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C will not start when cold. Flooded or starved for gas?

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Fred NC

02-03-2001 17:52:37




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Tractor started and run like a top until I rebuilt carb in attempt to stop gas from leaking out the bottom when I shut it off. Leaks worse now than it did, but more importantly it will not start when cold. Once it starts its fine and will start everytime but let is sit overnight and it takes for ever to get it started. Sometimes I will take the plugs out and they look dry and sometimes black smokes out when it finally does start. I choke it , I don,t choke it, I give it gas , I don't give it gas finally it starts. How can I tell if it is flooded or not getting gas? I"ve adjusted the carb screw everywhich way. While I'm trying to start it the gas pours out the bottom of carb, the very problem I was trying to fix. Help Fred

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J.L.

02-13-2001 22:59:30




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 Re: C will not start when cold. Flooded or starved for gas? in reply to Fred NC, 02-03-2001 17:52:37  
Fred; I think you need to do a few things.1 replace the seal ring on the bottom plug in the float bowl. 2 check the float to see if it has a pin hole in it, if it does it will have fuel in it. remove the float and shake it if you hear or feel liquid slooshing inside it, replace it. 3 check the metering tube for obstruction, if the metering tube is partially plugged, cold starts can be VERY hard. 4 also try starting with the bottom off the air cleaner, if it starts easily check stack for obstruction, mud dobber nests, grass, dirt, etc.

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ed

02-08-2001 19:57:53




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 Re: C will not start when cold. Flooded or starved for gas? in reply to Fred NC, 02-03-2001 17:52:37  
I may be off in my info, but I had a problem like this with my allis b. I thought it was the carb and rebuilt it. Nothing same problem, I then checked if the air cleaner was getting "fuller" and yes it was. What I fould out was that the air cleaner was slightly pluged with straw and dirt. What it was doing was to pull a draw on the carb and yes it would start but would run right out the carb. I took the air stack off and flushed out the cleaner and it hasen't givin me a problem since. It may sound out of the question but it was like when you try to start a small engine. Take off the carb cleaner and put your hand over the carb and see how much gas is there in just a pull or two. I sucks much more on the system and then it floods or just starts and with the excess gas will smoke till the excess is burnt off. I hope this will help in any way it can. ED

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JAMES

02-05-2001 15:04:12




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 Re: C will not start when cold. Flooded or starved for gas? in reply to Fred NC, 02-03-2001 17:52:37  
Fred, you might have two problems. The gas running out must be fixed but you already know that next pull the top off your air breather tube and make sure dirt dobbers have'nt stopped it up.



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Dave, Ontario

02-04-2001 18:00:21




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 Re: C will not start when cold. Flooded or starved for gas? in reply to Fred NC, 02-03-2001 17:52:37  
I tend to agree with Steve. It sounds like the problem could be in the float. Possibly a hole in it and partially filled wirh fuel.



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D13

02-04-2001 07:43:00




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 Re: C will not start when cold. Flooded or starved for gas? in reply to Fred NC, 02-03-2001 17:52:37  
I agree you need to fix the leak. If it's draining out the bowl overnight, you've got to get that fixed. Does it drain the bowl or just the lines? If the bowl is dry, look at the bottom plug. If the float is the problem, gas will run out of the carb at shut off, until the petcock is turned off, and then will drain the line. In the morning, there will still be gas in the carb bowl, and the tractor should start anyway.

Pull the air cleaner hose off just before you shut the tractor off, and see if gas runs out of the front of the carb a few minutes after shut-off. This is a float/needle type problem, and needs to be fixed (I had to take 3 runs at it to get mine to seal). If not, shut off the petcock and let it sit overnight. Then open the carb drain plug and see if you get gas out of the carb. If not, then there is a leak out of the plug or a crack in the bowl.

When you go to start the tractor, they love to flood. Try this (assuming you have electric start). Get on the tractor. Set the throttle to 1/2. Do not pull the choke! Reach forward, open the petcock, then start cranking the engine. Once it starts spinning, pull the choke out then push it right back in. Mine will flood if the choke is on more than a second, and won't start (even warm) without just a touch. Good luck!

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Fred

02-04-2001 09:28:27




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 Re: Re: C will not start when cold. Flooded or starved for gas? in reply to D13, 02-04-2001 07:43:00  
Thanks for the reply. Carb will not empty over night. While I'm trying to start it , it runs out the bottom, of course while it is running it does not leak, but if I turn off tractor it starts to run, when I turn off the valve it stops instantly.
Sometimes it doesn't just leak out it pours out.



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steve

02-03-2001 18:26:15




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 Re: C will not start when cold. Flooded or starved for gas? in reply to Fred NC, 02-03-2001 17:52:37  
Fred, I think the whold problem is in the carb. When shut off overnight, the bowl runs empty due to the leak. When you startup the next day the carburetor is empty. I guess you are shutting the gas petcock off overnight?? If I were you I would teardown the carb again. Make sure the float level is right and the needle valve that the float lifts, shuts off properly.Hold the carb upside down and blow thru the fuel supply. Does the weight of the float hold the needle valve on fuel supply closed? Either the needle leaks by, the float is set way too high, or the float has a hole in it and filling with gas.

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Dave ,Ontario

02-04-2001 17:53:50




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 Re: Re: C will not start when cold. Flooded or starved for gas? in reply to steve, 02-03-2001 18:26:15  

I am inclined to agree with Steve. I strongly suspect the problem is in the float. Possibly a hole in it and fuel in it.



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