Please Help

I just purchased a Farmall Super A, when I bought it, it was working fine, loaded it on the trailer and hauled it home. Drove it off the trailer and now as soon as I go to rev it above half throttle the governor goes on and off, the more throttle the worse the problem gets. What could have caused this on the trip home and what can I do to fix it? Thanks In Advance
 
It is starving for fuel.

Sounds like a fuel flow restriction somewhere between the gas tank and the engine.

Could be a clogged sediment bowl screen, debris in the bottom of the tank clogging the sediment bowl inlet or valve, clogged screen at the carburetor inlet elbow, debris in the inlet valve seat, or water/dirt/debris in the bottom of the float bowl/main jet area.
 
I agree with Bob. Driving it onto the trailer, moving it at road speeds sloshing the fuel and debris all around, and then tilting
it off the trailer is a profoundly sure way to plug up fuel lines. the outlet from tank to sediment bowl, in the sediment bowl and
screen it there. and in the small screen at the carb inlet fitting, are all suspect. Jim
 
As the others have said could be as simple as dirt/rust being jumbled around. A couple things that may help is to dump the sediment bowl and also pull the carb drain plug and let gas flow for a bit and catch it to see if it has some rust etc. I'm it. Also some times simply choking it good and hard will help. Or grabbing the gov to carb linkage and holding it a moment can help
 
It might also be the bumper spring in the governor. If
there isn't enough tension it will sit there and rev up
and down and not settle at one speed.
Are you in Nova Scotia? I'm down near the South
Shore. Sam
 
It could be the bump spring but that generally is a problem that creeps up gradually, not all at once, and wouldn't show up from simply transporting the tractor unless it was handled VERY roughly.

Trash in the gas tank clogging the fuel lines and carburetor is much more likely.
 
Could be a damaged carb float.
Whenever I haul a "Runnable" tractor for any distance, I remove the carb - the regular bouncing of some highways can damage the float in a dry carb.
 
NS welcome to YT! Not sure how familiar you are with Farmalls or tractors/engines. I am attaching a link to the CaseIH online parts look up. If you look at the page it opens to No. 2 is the strainer/screen at the carb inlet that fitting must be removed to clean the screen. Keep in mind there were 3 brands of carburetors used on a Super A so the configuration you have may be a bit different. Does the tractor drive and accelerate? If you put it in 3rd or 4th will it drive fine? If it moves a bit then bogs down or tries to die, that confirms the engine is not getting proper fuel flow. If that checks out fine then there is most likely a governor problem as others have suggested. Don't not know how you are with computers but that site will show you all the break downs for your tractor. You don't need to buy all parts from IH, just look up the number then do a web search to see options or consider buying them from YT if available. I wondered where Sam came up with the Nova Scotia deal; then I saw the NS in your handle. More likely name initials I suspect.
 
Thanks for all the information guys and thanks for the welcome to this amazing site. Actually I am from Nova Scotia I am near the Nova Scotia and New Brunswick border Tractorsam.
I am sorry that I never replied to you all sooner but I work two jobs and this is my busy week, which leaves me very little time to play with my tractor and that makes me sad.
I never thought to include this information in my first post, that I now see would have been helpful, after I got the tractor and it didn't run right I came here to find solutions and thought the same as you all that it was starving for fuel so I, checked the tank (looks like new inside, no dirt, which I am happy about) then cleaned the bowl, let fuel run out the line and it has a in line fuel filter so I changed that. Still wouldn't run good. So I removed the carb, cleaned it and then got a kit and rebuilt it, (not saying I did a professional job but I think I did good) and still won`t run good.
Haven`t had time to try the bump spring adjustment yet or other adjustments to the governor.
Here is another thing I noticed the other night which leads me to think it is getting enough fuel not sure if I am right though, when it is running and it starts revving up and down I can hold the rod from the governor to the carb and it will stop revving up and down and if I move that rod I can make the tractor go through all the range of RPM right up to wide open.
If you guys have any other ideas I am all ears, thanks in advance.
Danny
 
I can't be of much help but wanted to note those in-line fuel filters can certainly be a problem with fuel flow. You need one which is for gravity flow fuel and not one for a fuel pump system. Even then they can be restrictive to fuel flow if fuel level is low or near empty in the tank. You can run a simple fuel flow test by inserting a piece of open hose where the in-line filter is placed in the fuel line and see if that improves your engine performance. Being a new to you tractor, I would also remove all the existing fuel in the tank and replace with known fresh fuel as you have no knowledge if you are dealing with old or bad fuel at this time. I believe the screen at the sediment bowl and the filter screen in the carb inlet have already been noted by other responses so no need to mention that again as both of those are other strong possibilities to lack of adequate fuel flow, Hal.
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top