Farmall C263 governor problem

[Lee460]

My engine idles fine and engine runs good but I have to throttle it up very slowly or the governor kicks in wide-open and the engine cannot handle it. When running wide-open and I put a small load on the engine it does the same thing. The carburetor is rebuilt and working excellent so I believe it’s in the governor. I wanted you guys idea before I tear into the governor . I have had a half dozen of these and never had a governor problem before, It is the early style linkage. Thanks for any input.

 

[used red MN]

My engine idles fine and engine runs good but I have to throttle it up very slowly or the governor kicks in wide-open and the engine cannot handle it. When running wide-open and I put a small load on the engine it does the same thing. The carburetor is rebuilt and working excellent so I believe it’s in the governor. I wanted you guys idea before I tear into the governor . I have had a half dozen of these and never had a governor problem before, It is the early style linkage. Thanks for any input.

When something happens to your car engine and it won’t accelerate your mechanic’s recommendation should be to cut your foot off by your way of thinking. All the governor does is open the throttle plate just as the accelerator in a car does. You say your carburetor is working “excellent” well maybe or maybe not. Your symptom is pointing to a lean mixture. Does the carb have the main fuel shut off solenoid? If so changing the jet is the only way to adjust the mixture if the passages in the carb are all clear. Another thing that could aggravate this issue is improper timing, which could also be a problem in the mechanical advance. Bad spark plugs could also be part of the equation.

 

[Lee460]

When something happens to your car engine and it won’t accelerate your mechanic’s recommendation should be to cut your foot off by your way of thinking. All the governor does is open the throttle plate just as the accelerator in a car does. You say your carburetor is working “excellent” well maybe or maybe not. Your symptom is pointing to a lean mixture. Does the carb have the main fuel shut off solenoid? If so changing the jet is the only way to adjust the mixture if the passages in the carb are all clear. Another thing that could aggravate this issue is improper timing, which could also be a problem in the mechanical advance. Bad spark plugs could also be part of the equation.

It’s most definitely not the carburetor. I took the one off my pulling tractor and put on and it does the same thing. I took the one that I rebuilt and put on the pulling tractor and It still works just fine. The timing was set by the book and that didn’t change anything but I was also thinking maybe the mechanical advance could also be an issue. Haven’t got that deep in that yet. Thanks Lee

 

[Lee460]

It’s most definitely not the carburetor. I took the one off my pulling tractor and put on and it does the same thing. I took the one that I rebuilt and put on the pulling tractor and It still works just fine. The timing was set by the book and that didn’t change anything but I was also thinking maybe the mechanical advance could also be an issue. Haven’t got that deep in that yet. Thanks Lee

Just to add the background. Bought non-running last year. Unstuck the motor, got running, new plugs points condenser caps and plug wires, adjusted valves, put on Dyno and and got 61 horse maximum out of it. It just acts like the governor is slamming wide-open two quick and easy.

 

[grandpa Love]

My engine idles fine and engine runs good but I have to throttle it up very slowly or the governor kicks in wide-open and the engine cannot handle it. When running wide-open and I put a small load on the engine it does the same thing. The carburetor is rebuilt and working excellent so I believe it’s in the governor. I wanted you guys idea before I tear into the governor . I have had a half dozen of these and never had a governor problem before, It is the early style linkage. Thanks for any input.

A governor works when the weights and springs work together correctly.... Which one isn't right on yours?

 

[Lee460]

A governor works when the weights and springs work together correctly.... Which one isn't right on yours?

I agree 100%. Not sure which is not working correctly. I believe it must be internal but I haven’t opened it up yet. Will do that when it warms up and dries out. There’s not much to those governors and I’ve never had one not working correctly.Thank you.

 

[wore out]

 I

My engine idles fine and engine runs good but I have to throttle it up very slowly or the governor kicks in wide-open and the engine cannot handle it. When running wide-open and I put a small load on the engine it does the same thing. The carburetor is rebuilt and working excellent so I believe it’s in the governor. I wanted you guys idea before I tear into the governor . I have had a half dozen of these and never had a governor problem before, It is the early style linkage. Thanks for any input.

It's NOT the governor.

When you advance the throttle lever a large amount all at once the governor moves the carburetor butterfly wide open and quickly, that's how governors work, there's no delay somehow built in, and nothing wrong with the governor when it does that.

Your problem is that the engine is not "taking throttle".

The most likely scenario is that the carburetor us running too lean or there is something wrong inside the carburetor that prevents it from quickly transitioning from it's "idle fuel flow circuit" to it's "load fuel flow circuit".

But, you have personally ruled out the carb, so we have to move on.

Verify that the mechanical spark advance is working correctly by checking the timing with a timing light at idle and advance the throttle slowly and note if the timing advances from 6 degrees at idle to 28 degrees at rated RPM's. (Or whatever the exact factory "spec's" are, likely not too far out of line with what I wrote ).

Checking that manifold vacuum is "high and steady" at idle and once the engine "catches up" with your advancing of the throttle will help rule out valve or cam timing issues.

 

[Lee460]

 I

It's NOT the governor.

When you advance the throttle lever a large amount all at once the governor moves the carburetor butterfly wide open and quickly, that's how governors work, there's no delay somehow built in, and nothing wrong with the governor when it does that.

Your problem is that the engine is not "taking throttle".

The most likely scenario is that the carburetor us running too lean or there is something wrong inside the carburetor that prevents it from quickly transitioning from it's "idle fuel flow circuit" to it's "load fuel flow circuit".

But, you have personally ruled out the carb, so we have to move on.

Verify that the mechanical spark advance is working correctly by checking the timing with a timing light at idle and advance the throttle slowly and note if the timing advances from 6 degrees at idle to 28 degrees at rated RPM's. (Or whatever the exact factory "spec's" are, likely not too far out of line with what I wrote ).

Checking that manifold vacuum is "high and steady" at idle and once the engine "catches up" with your advancing of the throttle will help rule out valve or cam timing issues.

Thanks for the info. When I get a chance I will put the timing light back on it. When I timed it last spring I don’t recall having any issues at idle or full throttle, But that will be easy to check.

 

[rustred]

My engine idles fine and engine runs good but I have to throttle it up very slowly or the governor kicks in wide-open and the engine cannot handle it. When running wide-open and I put a small load on the engine it does the same thing. The carburetor is rebuilt and working excellent so I believe it’s in the governor. I wanted you guys idea before I tear into the governor . I have had a half dozen of these and never had a governor problem before, It is the early style linkage. Thanks for any input.

you gave no info on the main jet. screw it out 5 turns then see what happens. and before u do that close it and count how many turns it takes to close it. sounds like it just needs more petro. u can type here all day long ,.. i dont have eyes on it. so carb setting info is of the most help.

 

[used red MN]

you gave no info on the main jet. screw it out 5 turns then see what happens. and before u do that close it and count how many turns it takes to close it. sounds like it just needs more petro. u can type here all day long ,.. i dont have eyes on it. so carb setting info is of the most help.

rr, did you see my reply. This tractor would very likely have a main jet fuel shut-off solenoid. If so main jet is not externally adjustable.

 

[used red MN]

I agree 100%. Not sure which is not working correctly. I believe it must be internal but I haven’t opened it up yet. Will do that when it warms up and dries out. There’s not much to those governors and I’ve never had one not working correctly.Thank you.

“never had one not working correctly” that is why several of us are telling you it is not the governor. Those style are relatively trouble free. As woreout stated there is nothing inside them that slows the acceleration reaction.

 

[rustred]

rr, did you see my reply. This tractor would very likely have a main jet fuel shut-off solenoid. If so main jet is not externally adjustable.

i saw farmall c after i posted, saw 263 engine , kinda a big engine for that tractor.

 

[BTfromBG]

i saw farmall c after i posted, saw 263 engine , kinda a big engine for that tractor.

C for gasoline engine, d would be diesel engine.

 

[rustred]

C for gasoline engine, d would be diesel engine.

why not just post the tractor model and save all this confusion.

 

[Lee460]

Sorry guys I just got back. The carburetors do not have a solenoid for the main jet the tractors are too old for that. I’ve built a half a dozen IH six cylinder gas engines and have never had a problem like this before. There’s no question about the carburetor at all. They are always set by the book and then fine tuned on my dyno. As I said I switched carburetors with my pulling tractor and the problem did not move. I am not a rookie at this at all, but I have never had one act like this. I’m sure it has to be the timing advance or in the governor.I will check it all out when weather permits and get back with my findings. Thanks a bunch to all of you. Lee

 

[rustred]

now on track,pull the governor off and check it out. them area flimsy set up.

 

[Lee460]

now on track,pull the governor off and check it out. them area flimsy set up.

 

[Lee460]

now on track,pull the governor off and check it out. them area flimsy set up.

I agree there is not much to them. I will check out the timing advance and my next step will pull the governor and see if there’s something broken inside. Thank you all.

 

[rustred]

report what ?

 

[used red MN]

rr, looks like you want your feet cut off too. Oh, well he will probably pull the governor off and find a UFO in there. Then I will be eating crow again, getting kind of hungry anyway!