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1949 WD has no power

T

thebigyellowtruck

Member
I was recently cutting up the field with an old double disk when suddenly my wd lost power and stalled. it wouldnt start. I rebuilt the carb and now it starts and sounds real strong while driving or parked, but once i put any kind of pull on the tractor it seems to have no power. i tried to move a single disk and it was having a hard time. My carb is clean and fuel seems to be flowing good. Does anyone have any idea why it would be having this problem? Thanks in advance.
 
Whats the spark like?? Is it a good blue/white color and will it jump a 1/4 inch gap?? Also pull your plugs and make sure you don't have a couple of them fouled. Then if none of that helps post back may even be a problem with the advance in the distributor or a governor problem
 
i just replaced the plugs and wires before i pulled the double disk. i cant see it jumping when i run it in the dark. I have a magneto on it. I will check the plugs when i get a chance, probably tomorrow night. When i put a spark tester on it, was a bright yellow/white color.(that was before the carb rebuild, but after it wouldnt start)
 
You might try pulling the sediment bowl off of the tank and make sure that there is nothing restricting the flow. Even though is look like the is good flow, it still can be restricted.
 
that is a possableity. My gasket broke on my sediment bowl so i made a makeshift one out of an old piece of inner tube. i just ordered some new gaskets. hopefully that will take care of my problem.
 
Sounds like you may need to check the points in that mag because a yellow spark is a cold spark and will cause problems like you have
 
I buy those gaskets at my local auto parts store. (O'reilly's ) when I buy them I buy all they have in stock so I have a couple extras on hand
 
Any good auto parts store should be able to get you points. You may have to take yours in with you so they can compare them to what they have BTDT many times. Also if you need a manual for that mag I probably have it in this computer so I could send it to you if you send me an e-mail and tell me which mag you have
 

With it running at higher RPM (not idling), you should be able to open the power screw setting to the point that it is Clearly getting too much fuel and will be blowing Black smoke..
If you can't, the lower passage is still restricted.
What happens if you open the power screw..??
Does it take the load any better..?
It is not too likely that points in a Mag will give such a drastic, sudden change in the way it pulls..they last much longer than Battery Ignition points..

I vote for "Not getting enough fuel thru the Power valve setting"..

Ron..
 

With it running at higher RPM (not idling), you should be able to open the power screw setting to the point that it is Clearly getting too much fuel and will be blowing Black smoke..
If you can't, the lower passage is still restricted.
What happens if you open the power screw..??
Does it take the load any better..?
It is not too likely that points in a Mag will give such a drastic, sudden change in the way it pulls..they last much longer than Battery Ignition points..

I vote for "Not getting enough fuel thru the Power valve setting"..

Ron..
 
actually it was getting to much fuel and was blowing black smoke and back firing at the high end of the throttle. i adjusted that correctly today. still seems to be losing power under a load.
 

If it was that rich, it should not have been "Back-firing"..
Unless you expect to find something "mechanically wrong", you may well have an ignition problem..
Remember that you must use solid-core spark-plug wires on a Magneto equipped engine..

Ron..
 
i just replaced the wires with copper core. the guy i bought it from had silicon wires on it. it would fire, but not turn over with those. Since it was getting too much fuel, i assume that unburned fuel was getting into the hot exhaust causing it to ignite inside the exhaust resulting in a backfire. (it was only backfiring once i warmed it up) The only other ignition based broblem i can think of would be the mag points. I pulled the cap and they looked kinda burnt up. I just dont know if i can just buy matching ignition points or if i have to specifiy that they are for a mag.
 

If you can not readily find replacement Magneto points, clean your old ones as good as you can and run a point file through them..
That should get it running.

Do you have another set of sparkplugs..?
Might not hurt to change them for a dry set..!

Ron.
 
Rule number one before doing any carb rebuilding or tune up on an engine with this kind of problem is to pull the plugs and do a compression check. We were taught this 40 years ago in shop class. No need to spend money until you know what it needs to be spent on. To me it sounds like you have some bad valves but that's just a guess.
 
I checked at my local NAPA and they said that they should be able to match up the points with some new ones. I have more plugs too. The tractor runs now, but it just has no power. i moved a 8 foot wide single disk about 150 feet and it struggeling under the load. I'm going to pull the points and try to get new ones within in the next few days.
 
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