I recently completed a valve job on my H. I did not do anything to the governor. I put everything back together and it started right up - but surges at low idle. At mid throttle or higher it runs perfectly. No surge and plenty of power.
I was thinking that if the idle circuit in the carb was plugged or dirty and not producing a good idle mixture, that may cause the surging. The idle mixture screw seems to have little or no affect. I bounced that off Lurker Carl and he thought that might be a possibility.
Before I tear into the carb again, any ideas, thoughts or suggestions? All would be appreciated. Thanks.
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Farmall H Surging - Fixed
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Cub Cadet HDS 2155 - Circle of Safety: Y
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Farmall H Surging - Fixed
Last edited by VinceD on Sun May 03, 2009 7:57 pm, edited 1 time in total.
Vince
High atop Hummingbird Hill
In the Missouri Ozarks
High atop Hummingbird Hill
In the Missouri Ozarks
- SONNY
- 10+ Years
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Re: Farmall H Surging
I have the surge problem on my H too, and it just started doing it one day and has never stopped.---I too thought it was governor adjustment, spring or the internal linkage to carb sticking.---the idle needle has no effect on mine either!---other than that, --I have never gotten to check anything else! thanks; sonny
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- 10+ Years
- Posts: 4587
- Joined: Mon Apr 17, 2006 9:17 pm
- Zip Code: 65626
- Tractors Owned: 1949 Cub "Frodo"
1949 Cub "Sam" (future Project)
1965 Lo-Boy "Pippin"
1940 H "Walter"
1953 SC "Gimli"
Cub Cadet HDS 2155 - Circle of Safety: Y
- Location: MO, Bakersfield, (South - Central)
Re: Farmall H Surging
Sonny, I added some SeaFoam to the gas today to see if that would help clear any dirt from the idle circuit of the carb. I will keep you informed.
Vince
High atop Hummingbird Hill
In the Missouri Ozarks
High atop Hummingbird Hill
In the Missouri Ozarks
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- Team Cub Mentor
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Re: Farmall H Surging
1). Vacuum leak.
2). Fuel system problem.
3). Leaking head gasket.
If it's an intermittent miss. Faulty spark plug(s).
2). Fuel system problem.
3). Leaking head gasket.
If it's an intermittent miss. Faulty spark plug(s).
I have an excuse. CRS.
- SONNY
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- Joined: Thu Nov 09, 2006 11:26 pm
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Re: Farmall H Surging
Mine hits good on all 4 cylinders while surging,-----acts like gov. link sticking, then releasing or spring weak in the gov.-----Was looking in the manual and there are some internal adjusters behind the outer cover.
Could be some stuff in the idle tube inside the carb.---never did have mine off to see if I could blow thru the passages.
Dont think the timing would cause the surge,---it runs smooth and free, starts right up, no kick-back or run-on! thanks; sonny
Could be some stuff in the idle tube inside the carb.---never did have mine off to see if I could blow thru the passages.
Dont think the timing would cause the surge,---it runs smooth and free, starts right up, no kick-back or run-on! thanks; sonny
-
- 10+ Years
- Posts: 4587
- Joined: Mon Apr 17, 2006 9:17 pm
- Zip Code: 65626
- Tractors Owned: 1949 Cub "Frodo"
1949 Cub "Sam" (future Project)
1965 Lo-Boy "Pippin"
1940 H "Walter"
1953 SC "Gimli"
Cub Cadet HDS 2155 - Circle of Safety: Y
- Location: MO, Bakersfield, (South - Central)
Re: Farmall H Surging
I sprayed around the carb with WD-40 as the engine was running to test for vacuum leaks and couldn't find any.
The head gasket was replaced when I replaced the head. I coated it with copper spray and torqued the head according to instructions.
I haven't had a chance to pull the carb yet but will soon and will post the results.
The head gasket was replaced when I replaced the head. I coated it with copper spray and torqued the head according to instructions.
I haven't had a chance to pull the carb yet but will soon and will post the results.
Vince
High atop Hummingbird Hill
In the Missouri Ozarks
High atop Hummingbird Hill
In the Missouri Ozarks
-
- 10+ Years
- Posts: 4587
- Joined: Mon Apr 17, 2006 9:17 pm
- Zip Code: 65626
- Tractors Owned: 1949 Cub "Frodo"
1949 Cub "Sam" (future Project)
1965 Lo-Boy "Pippin"
1940 H "Walter"
1953 SC "Gimli"
Cub Cadet HDS 2155 - Circle of Safety: Y
- Location: MO, Bakersfield, (South - Central)
Re: Farmall H Surging
OK guys, I got it fixed. I pulled the carb yesterday and using spray carb cleaner and compressed air I cleaned every passage I could see. I used phone wire to clean all the tiny jets. I also checked, but did not change the float levels. I put everything back together and it works perfectly - no surging. The idle screw also works again. Apparently I had at least one blockage in the primary air bleed circuit. Anyway, it is now ticking like a fine watch.
Thanks for your suggestions and input.
Thanks for your suggestions and input.
Vince
High atop Hummingbird Hill
In the Missouri Ozarks
High atop Hummingbird Hill
In the Missouri Ozarks
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