I recently purchased a 1944 H that I have lent to an educational farm where I volunteer. The H is mainly used to pull tour wagons.
After a tune up, including adjusting the fuel mixtures and timing it ran great at all speeds. Last weekend I found that it wasn't making the speed it should. I put a tachometer on it and found that the no load high idle was only turning 1400 rpm.
I adjusted the governor for 1825 no load high idle. The problem is at anything over about 1400 rpm the governor hunts. The mixture screw doesn't seem to affect the hunting until I get it leaned out to where the governor can't get the speed to 1825 rpm. It does settle down quite a bit with a decently loaded wagon.
Any thoughts on how I should tackle the problem?
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Farmall H Governor hunting at high idle.
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- MiCarl
- 5+ Years
- Posts: 581
- Joined: Sat Dec 16, 2017 8:28 am
- Zip Code: 48154
- Tractors Owned: 2021 RK25 "Barbie"
1944 Farmall H
1948 Farmall Cub (SOLD)
1994 Speedex 1631 - Circle of Safety: Y
- Location: Howell, MI
Farmall H Governor hunting at high idle.
1944 Farmall H
1948 Farmall Cub
1994 Speedex 1631
1948 Farmall Cub
1994 Speedex 1631
- Slim140
- 5+ Years
- Posts: 4908
- Joined: Wed Nov 22, 2017 6:24 am
- Zip Code: 00000
- Tractors Owned: .
1970 International 140
1972 International 140
1949 John Deere A
1993 Ford 4630 W/Loader
1965 John Deere 110
1961 Cub Cadet Original - Circle of Safety: Y
Re: Farmall H Governor hunting at high idle.
May need to take the carb apart and clean it. May have some trash in it.
Every home is a school, what are you teaching?
-
- 10+ Years
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- Joined: Tue Jan 12, 2010 2:08 pm
- Zip Code: 12514
- Circle of Safety: Y
Re: Farmall H Governor hunting at high idle.
check for lack of fuel/restriction
- MiCarl
- 5+ Years
- Posts: 581
- Joined: Sat Dec 16, 2017 8:28 am
- Zip Code: 48154
- Tractors Owned: 2021 RK25 "Barbie"
1944 Farmall H
1948 Farmall Cub (SOLD)
1994 Speedex 1631 - Circle of Safety: Y
- Location: Howell, MI
Re: Farmall H Governor hunting at high idle.
I don't think it's a dirty carb or fuel restriction - it throttles up and pulls a load fine up a good grade. It's under no-moderate load that the thing hunts.
Before today's runs I retarded the timing a bit and reset the mixtures. That seemed to help but still not 100%.
Before today's runs I retarded the timing a bit and reset the mixtures. That seemed to help but still not 100%.
1944 Farmall H
1948 Farmall Cub
1994 Speedex 1631
1948 Farmall Cub
1994 Speedex 1631
- Rick Spivey
- Cub Pro
- Posts: 2778
- Joined: Sun Jul 01, 2007 10:07 pm
- Zip Code: 29518
- Circle of Safety: Y
- Location: SC, Cades 29518
Re: Farmall H Governor hunting at high idle.
In my experience "hunting" at higher speed means fuel starvation. I agree with the guys above, better check the cleanliness of the main jet and discharge tube.
Rick Spivey
'52 Cub ("Great Personality") 148xxx
'48 Cub with FH ("Gunny Cub") 38xxx
'57 Lambretta (a slow work in progress)
'74 Triumph TR6 (Mama's toy)
'52 Cub ("Great Personality") 148xxx
'48 Cub with FH ("Gunny Cub") 38xxx
'57 Lambretta (a slow work in progress)
'74 Triumph TR6 (Mama's toy)
- MiCarl
- 5+ Years
- Posts: 581
- Joined: Sat Dec 16, 2017 8:28 am
- Zip Code: 48154
- Tractors Owned: 2021 RK25 "Barbie"
1944 Farmall H
1948 Farmall Cub (SOLD)
1994 Speedex 1631 - Circle of Safety: Y
- Location: Howell, MI
Re: Farmall H Governor hunting at high idle.
UPDATE:
The issue has self resolved. My best guess is there were deposits on the governor shaft in an area that was unused at lower rpm and it was making the weight response sluggish. Then some use scoured the deposits.
I've put the timing back to normal and while the governor will surge a couple times if I snap the speed control to high idle with no load it is otherwise rock steady regardless of engine load.
The issue has self resolved. My best guess is there were deposits on the governor shaft in an area that was unused at lower rpm and it was making the weight response sluggish. Then some use scoured the deposits.
I've put the timing back to normal and while the governor will surge a couple times if I snap the speed control to high idle with no load it is otherwise rock steady regardless of engine load.
1944 Farmall H
1948 Farmall Cub
1994 Speedex 1631
1948 Farmall Cub
1994 Speedex 1631
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