AC B just stopped running

ed in cny

Member
My 42 Allis b quit working. I'm clearly not sure why. I use it just last week before the rain came here in Upstate New York. Since Wednesday I tried to use it and she won't spark won't Fire won't ignite won't do anything. I know I have gas and I have gas through the carburetor. I tried to check the spark but since it's a crank start I can't crank start and see the spark plug spark. I did take the mag off to verify if it were damp and I didn't see anything out of the norm. Time I had it taken off it ought to have dried but I really didn't see any rain water or anything in there. She fired up pretty good when it was working last week and weeks before but today and yesterday not working I can't get it to do anything. If it's a crank start unit how in the world do you check spark other than hold the spark plug? You'd have thought I've had had some issue with it but it hasn't given me any troubles this year. I want to get it operational cuz I have potatoes I need to get in the ground. Any help would be great thanks.
 
When you took the mag off did you check for spark? My WD wouldn't start this morning because of no spark, when had lighting strike here last week and it literly melted the fuse for our AC in the house, I was told one time from a old mechanic years ago that sometimes when lighting struck to close to a tractor that it would ruin the coil, I think that's what happened to mine, I had another mag put it on for the time being.
 
Pull all ther plugs out and lay them so you do not mix them up on the block so you can then turn it over by hand to watch for sprk. With all the plugs out it will spin over very easy so you can see if it has spark
 
Old I can't see how laying the spark plugs on the block will do any good at all. I stand on the opposite side of the tractor when I crank. There is absolutely no way to see a spark on the mag side from the other side. I'm a one man show so without someone looking at the sparkplug on the mag side while I crank there's no way I can do it myself. If there was a way to get the plugs around the front grill and maybe I crank easy enough so I don't move the tractor then just maybe I might see something. Remember this is a hand crank tractor not electric start.
 
A bad condenser can cause that. Sometimes when they cool off they will work again for a while.
 
Lay them on the hood then if the plug wires are long enough. Withthe plugs out you should be able to turn the engine over and yet be on the plug side of the engine I know i have done it before
 
Old fashion never fail spark tester is the thumb and first finger. I have had four EMG tests on all four limbs which is about the same. Gives you a little jump each time but no damage.
 
(quoted from post at 14:09:56 05/16/19) Old I can't see how laying the spark plugs on the block will do any good at all. I stand on the opposite side of the tractor when I crank. There is absolutely no way to see a spark on the mag side from the other side. I'm a one man show so without someone looking at the sparkplug on the mag side while I crank there's no way I can do it myself. If there was a way to get the plugs around the front grill and maybe I crank easy enough so I don't move the tractor then just maybe I might see something. Remember this is a hand crank tractor not electric start.

If you are standing opposite the spark plugs when crank starting, then you have to be pushing down on the hand crank. Thats a very bad place to be should it choose to kick back. With all 4 plugs pulled, it'd be very easy to stand to the right side and roll it over to watch for spark.
AaronSEIA
 
My B stopped last winter when I was pushing snow. It would not restart. It turned out to be the condenser that died. I have never had a condenser die that suddenly ever before.
 
Well for all the trouble with the tractor I have it running now. Friday I went over to again work on the tractor to get it started. On my way I filled up a 5 gal can of gas. Got to the tractor and for what ever reason I decided to put the gas in the tank first. I then tried the hand crank a few times and it came to life. I clearly know I had gas when I checked the other day but I guess it wasn't enough. It was on a grade so it may have added to the issue but I'm not sure that was the cause as it pointed down hill. I got right back to work without further issue.
 
(quoted from post at 20:15:27 05/19/19) Well for all the trouble with the tractor I have it running now. Friday I went over to again work on the tractor to get it started. On my way I filled up a 5 gal can of gas. Got to the tractor and for what ever reason I decided to put the gas in the tank first. I then tried the hand crank a few times and it came to life. I clearly know I had gas when I checked the other day but I guess it wasn't enough. It was on a grade so it may have added to the issue but I'm not sure that was the cause as it pointed down hill. I got right back to work without further issue.

Maybe you had a midnight visitor. If not, I hate when that happens, or I forget to turn the fuel valve on.
 

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