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Contest time, why hard to start.
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- John *.?-!.* cub owner
- Cub Pro
- Posts: 23701
- Joined: Sun Feb 02, 2003 2:09 pm
- Zip Code: 63664
- Tractors Owned: 47, 48, 49 cub plus Wagner loader & other attachments. 41 Farmall H.
- Location: Mo, Potosi
Re: Contest time, why hard to start.
I have seen a couple of pretty close statements, but now am going to throw in a curve. I have had this problem from a weak magneto coil once in the past, and removed the magneto and replace the lightly burned points and condenser as well as the coil. No change. I then tried a spare magneto on it with a slight improvement, but not enough to be acceptable, original basic problem was still there. Both the spare coil and spare magneto were stored in my welding rod chest, which is heated and insulated to prevent moisture. Doing all of this is so much fun. I have to raise the loader and block it up, and since the front supports are homemade and not prestressed properly, it is necessary to support the front of the loader with a jack to get the hand crank in, along with my not noticing the ears of the crank pulley were damaged while it was apart so the crank slips while turning engine to time the magneto unless you put pressure on it to hold it in.
If you are not part of the solution,
you are part of the problem!!!
you are part of the problem!!!
- 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: Contest time, why hard to start.
Since you changed mags with little to no effect I would have to say carburetor or fuel issues. How long has the gas been in it? Is it ethanol free gas?
Every home is a school, what are you teaching?
- AL Farmall Boy
- 10+ Years
- Posts: 2555
- Joined: Tue Aug 10, 2010 6:38 pm
- Zip Code: 35630
- Circle of Safety: Y
Re: Contest time, why hard to start.
Do we have pictures of this tractor?
Aftermarket fuel filter causing fuel restriction?
Aftermarket fuel filter causing fuel restriction?
Regards,
Chase
205-368-5339
ihfarmallrtr@gmail.com
Follow my page "Alabama Tractor Pickers" on YouTube & Facebook!
Chase
205-368-5339
ihfarmallrtr@gmail.com
Follow my page "Alabama Tractor Pickers" on YouTube & Facebook!
- AL Farmall Boy
- 10+ Years
- Posts: 2555
- Joined: Tue Aug 10, 2010 6:38 pm
- Zip Code: 35630
- Circle of Safety: Y
Re: Contest time, why hard to start.
I'm going to say both carburetor issues as Waif said, and on/off switch shorting out.
Regards,
Chase
205-368-5339
ihfarmallrtr@gmail.com
Follow my page "Alabama Tractor Pickers" on YouTube & Facebook!
Chase
205-368-5339
ihfarmallrtr@gmail.com
Follow my page "Alabama Tractor Pickers" on YouTube & Facebook!
-
- 5+ Years
- Posts: 1138
- Joined: Thu Aug 25, 2016 1:29 pm
- Zip Code: 49343
- Tractors Owned: 48 Farmall Cub "Seen Yore Dobbin"
53 F-Cub W/Loader. - Circle of Safety: Y
- Location: Michigan
Re: Contest time, why hard to start.
How many guesses we get? L.o.l..
If you are frogging with a good mag still....maybe the timing is off.
Impulse coupler clicking at tops of strokes or not......
Still seems more fuel related.
If you are frogging with a good mag still....maybe the timing is off.
Impulse coupler clicking at tops of strokes or not......
Still seems more fuel related.
-
- 10+ Years
- Posts: 10
- Joined: Wed Apr 28, 2010 5:48 pm
- Zip Code: 36274
- Location: Roanoke Alabama
Re: Contest time, why hard to start.
sediment bowl screen almost stopped up.
- Barnyard
- Team Cub
- Posts: 24233
- Joined: Tue Aug 07, 2007 3:39 pm
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40 Farmall Cubs (Round Hood)
2 Farmall Cub (Square Hood)
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2 Lo-Boys (Square Hood)
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- Location: OH, New Haven (Hamilton County)
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Re: Contest time, why hard to start.
Magneto coupling spring end button missing/worn.
There are two ways to get enough Cubs. One is to continue to accumulate more and more. The other is to desire less.
-
- Team Cub
- Posts: 17214
- Joined: Sun Feb 02, 2003 2:59 pm
- Zip Code: 55319
- Circle of Safety: Y
- Location: MN
Re: Contest time, why hard to start.
We have to keep in mind that this isn't just ANYBODY trying to find a problem. It is E. John Puckett! The easy answers would have not evaded him for three days. The answer has to be something that could hide undetected, beyond the focus of his eagle eyes.
Gas turned on?
Gas turned on?
- 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: Contest time, why hard to start.
Jim Becker wrote:We have to keep in mind that this isn't just ANYBODY trying to find a problem. It is E. John Puckett! The easy answers would have not evaded him for three days. The answer has to be something that could hide undetected, beyond the focus of his eagle eyes.
Gas turned on?
^^^THAT is some funny stuff right there Jim!
Every home is a school, what are you teaching?
-
- 5+ Years
- Posts: 2803
- Joined: Wed Jul 08, 2015 10:24 am
- Zip Code: 19342
- Tractors Owned: 1948 6v - Dozer
1949 with kub klipper belly mower. mag 6v - Mom
1950 with plow, 54 blade, mott mag 6v - Roxanne
1953 54 blade, c22, wood 42 6v
1957 6v - barn Queen
1965 lo-boy with c-3 mower 12 v - Loboy
1974 Horse II 12 v c-2
1975 with woods 42-6 12 v - Horse
1979 long strip 12 v stuck engine
130 with international 1000 loader 6 v
1969 140 with bush hog tow behind mower 12 v
Terramite T-6 4WD Backhoe Perkins diesel
Memberships: Rough and Tumble Engineers Historical Association;Chapter 8 IH Collectors; IH Collectors Worldwide - Circle of Safety: Y
- Location: Glen Mills PA
Re: Contest time, why hard to start.
We have to keep in mind that this isn't just ANYBODY trying to find a problem. It is E. John Puckett! The easy answers would have not evaded him for three days. The answer has to be something that could hide undetected, beyond the focus of his eagle eyes.
Coriolis effect - Did you check if the cubs were north, south or east west when you had the problem?
When you only have 9 horsepower you need to know the names of all of the ponies!
- ricky racer
- 10+ Years
- Posts: 6303
- Joined: Wed Sep 12, 2007 8:40 pm
- Zip Code: 49120
- Circle of Safety: Y
- Location: Niles / Buchanan, Michigan
Re: Contest time, why hard to start.
I'm still thinking it the nut behind the steering wheel....
1929 Farmall Regular
1935 John Deere B
1937 John Deere A
1941 John Deere H
1952 John Deere B
1953 Farmall Cub
1935 John Deere B
1937 John Deere A
1941 John Deere H
1952 John Deere B
1953 Farmall Cub
- Urbish
- 10+ Years
- Posts: 2427
- Joined: Sat Sep 07, 2013 3:45 pm
- Zip Code: 48158
- Tractors Owned: ~
1958 International Cub LoBoy
1947 Farmall H
1946 Farmall B
1953 Willys CJ3B
2022 Massey Ferguson GC1723E Subcompact
Cub Loboy L-54 Leveling and Grader Blade - Circle of Safety: Y
- Location: Manchester, MI
Re: Contest time, why hard to start.
Moon phase? We're in a waxing crescent presently.
In all seriousness, here's my revised guess. Was the impulse coupler kicking out at too low of an RPM for the engine to begin running on it's own after the initial hit kicked the bendix out of engagement with the flywheel?
In all seriousness, here's my revised guess. Was the impulse coupler kicking out at too low of an RPM for the engine to begin running on it's own after the initial hit kicked the bendix out of engagement with the flywheel?
Jim
- John *.?-!.* cub owner
- Cub Pro
- Posts: 23701
- Joined: Sun Feb 02, 2003 2:09 pm
- Zip Code: 63664
- Tractors Owned: 47, 48, 49 cub plus Wagner loader & other attachments. 41 Farmall H.
- Location: Mo, Potosi
Re: Contest time, why hard to start.
I guess it is time to admit the problem, Barnyard has the answer though not exact, the problem was a weak coupling spring, which is what IH call the impulse spring that compresses when turning at low speed to start the tractor. I got tired of all the aggravation working on the loader and decided to try switching the major parts one at a time with another tractor, magneto first, then starter, etc. Never got past the magneto. Problem switched tractors with it. LOL I used my ignition scope on it while running which didn't show any problems. That should have given me a clue but I am a little slow some times.
I dug out an OTC ignition meter I had for several years but never used, and found that cranking with everything normal voltage was around 12 or 13 k which is the firing range the spark plugs normally fire at. However, when I performed the same cranking test with an open on the coil output the first spark was 35k volts (normal for an open circuit), but all the succeeding ones were in the 12 to 13k range, which is not normal for an open circuit. When I took the magneto off and spun it with a drill, it was 32 to 35k consistently which made me think the impulse spring might be weak. I actually had a new one in my spare parts, and installed it, and the tractor now takes off and runs as soon as the engine turns over a time or two, no more kicking the starter out. One thing, getting the little buttons out of the ends of the old spring is a pain, but necessary.
I tested my spare magneto, and it tested the same way, but I only had one spring, so it will have to wait a week or so before my order from Flieg's (local dealer) comes in. I thought when I was timing that magneto it was easier to turn to the trip point than normal but wasn't sure, and had no practical way to measure it.
I dug out an OTC ignition meter I had for several years but never used, and found that cranking with everything normal voltage was around 12 or 13 k which is the firing range the spark plugs normally fire at. However, when I performed the same cranking test with an open on the coil output the first spark was 35k volts (normal for an open circuit), but all the succeeding ones were in the 12 to 13k range, which is not normal for an open circuit. When I took the magneto off and spun it with a drill, it was 32 to 35k consistently which made me think the impulse spring might be weak. I actually had a new one in my spare parts, and installed it, and the tractor now takes off and runs as soon as the engine turns over a time or two, no more kicking the starter out. One thing, getting the little buttons out of the ends of the old spring is a pain, but necessary.
I tested my spare magneto, and it tested the same way, but I only had one spring, so it will have to wait a week or so before my order from Flieg's (local dealer) comes in. I thought when I was timing that magneto it was easier to turn to the trip point than normal but wasn't sure, and had no practical way to measure it.
If you are not part of the solution,
you are part of the problem!!!
you are part of the problem!!!
-
- 5+ Years
- Posts: 41
- Joined: Thu Dec 03, 2015 4:11 pm
- Zip Code: 27909
- Tractors Owned: 48 Cub 49 Cub 55 Cub 64 Cub 78 Cub 44 A Farm Trac 390 4x4 David Bradleys, Planet Jr.s 2 mini donkeys
- Location: Elizabeth city N.C.
- Contact:
Re: Contest time, why hard to start.
Distributor Cap Coroded
- Boss Hog
- Cub Pro
- Posts: 10290
- Joined: Mon Oct 24, 2005 8:35 pm
- Zip Code: 23962
- eBay ID: dmb2613
- Circle of Safety: Y
- Location: VA. Randolph
Re: Contest time, why hard to start.
center button in Cap worn down
Boss
Boss
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Boss Hog
Power corrupts; absolute power corrupts absolutely byJohn Emerich Edward Dalberg
All others pay cash
Boss Hog
Power corrupts; absolute power corrupts absolutely byJohn Emerich Edward Dalberg
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