41 JD A starting problem

[ClaytonFarms]

41A , tractor was slightly stuck. Got it unstuck and everything moving but now that its time to start it its acting like its not getting fuel to the combustion chamber. Ive got decent spark, I figured out my fuel was shut off but got that to flow and now have fuel to the carb (the carb will drain fuel out....) any tips on where to go from here? Ive never pulled a carb on one of these, but have toyed around with sending it off to get rebuilt anyways.

There seems to be some residual lubricants left over from when I got the cylinders unstuck in the combustion chamber. Would brake clean help to get this stuff out?

Cant think of anything else it would be....

 

[Drew]

How did you get the engine unstuck, brute
force or take things apart and look for
issues? Since you mention you haven't
taken the carburetor off, I'm assuming
brute force. Are you 100% positive the
valves are all moving properly? If you
forced the engine to turn over, it is
possible that pushrods and/or valves were
damaged. What does the compression check
on each cylinder?

 

[ClaytonFarms]

(reply to post at 16:37:00 03/21/21)

You sound Super judgemental over there..... Im not even going to give your post any merit by responding to any of the nonsense you have spouted. EVERYTHING is moving fine. Valves, rockers, all of it. Its not like I pull started it while stuck and bent everything all to crap.

 

[NoDakInMN]

For a one barrel carb, the DLTX series is rather sophisticated and installing a carb kit will not usually work as it does with other on barrel carbs. There are passages that that get plugged with rust and have to be drilled out, solvents won't do the job. Go to https://robertscarbrepair.com/tractor-pulls-good-but-will-not-idle/ for more insight on this.

 

[Dan in Ohio]

You should be able to open the pet cocks to clear anything from the cylinders and it won't hurt to leave them open until you
get it to fire up. Gently tap the bowl may help to unstick the needle valve.

 

[M-MAN]

There's a good chance with it being
stuck there isn't enough pull to draw in
the fuel with the slow starter. I would
give it a pull since you know there is
spark and fuel.

 

[old]

I've taken many locked up engines and freed them. One major and common problem is the rings are stuck in the pistons so you have little to no compression so you need to on these 2 cylinder JD jack the front end up say 18 inches or so them fill both cylinders with ATF and also pour as much down the exhaust as you can and let it sit a week or so. Then pull the plugs back out and spin it over to clear the ATF out of the cylinders. And yes put the plugs back in before pouring ATF down the exhaust. This will free up sticking rings and sticking valves. I've done this with 30 plus engines including my 1935 JD B that was stuck for over 15 years. and it now runs

 

[Rich'sToys]

As you mentioned, probably a good idea to send the carb off for a rebuild. I've done that several times, as I'm not a carb guy. With all the special passages to be cleaned out, etc. I'm more than willing to pay someone else for their expertise in this area.

 

[PJH]

If it was mine and I was sure that everything was unstuck, I would try to pull start it with another tractor or truck. Sometimes an engine is close but not quite ready to wake up. I've pull started several that refused to run, and then they started reliably on their own for years afterward. Once you get one running, even badly, you can do some adjusting to make it cheer up.

I overhauled a JD B right out of high school and it refused to start. I had an old Gravely handlebar tractor, and I belted that old Gravely to that B and it fired up and ran like a striped ape. That B never failed to start on its own again.

Good luck!

 

[jd man wis]

I was over to a friend's place one time and his A would not start and his dad told him that you need to put some oil in the cylinders and then it will start. So of course he kept hand starting it tell he was shot them put some oil in the cylinders and the thing fires right up. He put the oil in there and turn it over some to move it around and he didn't put alot in there. Boy we were surprised when it started.

 

[miangus]

Belt it up to another JD if you can. Let it spin for awhile, make sure it has water and oil.

 

[jd man wis]

I was over to a friend's place one time and his A would not start and his dad told him that you need to put some oil in the cylinders and then it will start. So of course he kept hand starting it tell he was shot them put some oil in the cylinders and the thing fires right up. He put the oil in there and turn it over some to move it around and he didn't put alot in there. Boy we were surprised when it started.

 

[Mike N Mo]

As Drew has already asked, does the tractor have decent compression? You say you have decent spark. Is the ignition timing correct?