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engine will not start
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obispo62
- 5+ Years
- Posts: 10
- Joined: Sat Nov 11, 2017 3:03 pm
- Zip Code: 48768
engine will not start
I have a model 64 McCormick combine with a cub engine. It will not start. I've had the magneto worked on and have been assured it has good spark. I've replaced the ethanol/gasoline mixture with rec89. I've replaced the spark plugs. I've rebuilt the carburetor. I've cleaned the commutator on the starter, because it seemed to be going too slowly. Because the engine is on a combine, it sits unused for long periods. I'm at my wits end. I've read this forum about similar starting problems with cub engines. I have a Farmall C and a Farmall M. Both start and run well on the enthanol/gasoline mixture.
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Don McCombs
- Team Cub Mentor
- Posts: 17488
- Joined: Mon Feb 03, 2003 6:45 am
- Zip Code: 21550
- Tractors Owned: "1950 Something" Farmall Cub
1957 Farmall Cub w/FH
1977 International Cub w/FH
1978 International Cub
1948 Farmall Super A - Circle of Safety: Y
- Location: MD, Deep Creek Lake
Re: engine will not start
Other than replacing plugs, when was the last complete tune-up? What is the condition of the battery?
Don McCombs
MD, Deep Creek Lake
Proud Member of Maryland Chapter 39
The best teachers are those who show you where to look, but don't tell you what to see.
A. K. Trenfor
MD, Deep Creek Lake
Proud Member of Maryland Chapter 39
The best teachers are those who show you where to look, but don't tell you what to see.
A. K. Trenfor
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Eugene
- Team Cub Mentor
- Posts: 20377
- Joined: Fri Jul 02, 2004 9:52 pm
- Zip Code: 65051
- Circle of Safety: Y
- Location: Mo. Linn
Re: engine will not start
Prime the oil pump before you go further.
Since engine has a starter, compression test, dry then wet. Looking for stuck valve(s).
The C60 IH engine is prone to sticking/stuck valves if the engine sat for a length of time.
The engine will run satisfactorily on ethanol blend.
Since engine has a starter, compression test, dry then wet. Looking for stuck valve(s).
The C60 IH engine is prone to sticking/stuck valves if the engine sat for a length of time.
The engine will run satisfactorily on ethanol blend.
I have an excuse. CRS.
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ricky racer
- 10+ Years
- Posts: 6337
- Joined: Wed Sep 12, 2007 8:40 pm
- Zip Code: 49120
- Circle of Safety: Y
- Location: Niles / Buchanan, Michigan
Re: engine will not start
Have you verified fuel flow to the carb? Follow the advice given by Eugene, a stuck valve may very well be the issue if it's getting good fuel flow. Search priming the oil pump on this site. The oil pump is mounted behind the flywheel and can loose it prime when setting for long periods. If the engine should start and the pump has lost it's prime bad things will happen. Let us know what you find regarding the compression test.
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
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tmays
- 10+ Years
- Posts: 3414
- Joined: Wed May 11, 2011 8:59 pm
- Zip Code: 39154
- Tractors Owned: 1969 Farmall Cub
1952 Cub
1942 Farmall H - Location: Raymond, MS
Re: engine will not start
You say mag been worked on. Was mag removed? If so,May not be timed correctly
Thomas
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obispo62
- 5+ Years
- Posts: 10
- Joined: Sat Nov 11, 2017 3:03 pm
- Zip Code: 48768
Re: engine will not start
Don McCombs wrote:Other than replacing plugs, when was the last complete tune-up? What is the condition of the battery?
Complete tune-up was done at time plugs were replaced. The battery seems to hold a charge.
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obispo62
- 5+ Years
- Posts: 10
- Joined: Sat Nov 11, 2017 3:03 pm
- Zip Code: 48768
Re: engine will not start
Eugene wrote:Prime the oil pump before you go further.
Since engine has a starter, compression test, dry then wet. Looking for stuck valve(s).
The C60 IH engine is prone to sticking/stuck valves if the engine sat for a length of time.
The engine will run satisfactorily on ethanol blend.
The engine ran earlier this year.
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obispo62
- 5+ Years
- Posts: 10
- Joined: Sat Nov 11, 2017 3:03 pm
- Zip Code: 48768
Re: engine will not start
tmays wrote:You say mag been worked on. Was mag removed? If so,May not be timed correctly
Yes, the mag was removed, but was replaced according to instructions in the engine's Operator's Manual.
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obispo62
- 5+ Years
- Posts: 10
- Joined: Sat Nov 11, 2017 3:03 pm
- Zip Code: 48768
Re: engine will not start
ricky racer wrote:Have you verified fuel flow to the carb? Follow the advice given by Eugene, a stuck valve may very well be the issue if it's getting good fuel flow. Search priming the oil pump on this site. The oil pump is mounted behind the flywheel and can loose it prime when setting for long periods. If the engine should start and the pump has lost it's prime bad things will happen. Let us know what you find regarding the compression test.
I will give this a try!
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obispo62
- 5+ Years
- Posts: 10
- Joined: Sat Nov 11, 2017 3:03 pm
- Zip Code: 48768
Re: engine will not start
Don McCombs wrote:Other than replacing plugs, when was the last complete tune-up? What is the condition of the battery?
Recently the distributor rotor had to be replaced. How do I know whether it is properly located now?
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obispo62
- 5+ Years
- Posts: 10
- Joined: Sat Nov 11, 2017 3:03 pm
- Zip Code: 48768
Re: engine will not start
Eugene wrote:Prime the oil pump before you go further.
Since engine has a starter, compression test, dry then wet. Looking for stuck valve(s).
The C60 IH engine is prone to sticking/stuck valves if the engine sat for a length of time.
The engine will run satisfactorily on ethanol blend.
Recently the distributor rotor had to be replaced. How do I know if it's properly located now?
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obispo62
- 5+ Years
- Posts: 10
- Joined: Sat Nov 11, 2017 3:03 pm
- Zip Code: 48768
Re: engine will not start
obispo62 wrote:ricky racer wrote:Have you verified fuel flow to the carb? Follow the advice given by Eugene, a stuck valve may very well be the issue if it's getting good fuel flow. Search priming the oil pump on this site. The oil pump is mounted behind the flywheel and can loose it prime when setting for long periods. If the engine should start and the pump has lost it's prime bad things will happen. Let us know what you find regarding the compression test.
I will give this a try!
Recently the distributor rotor had to be replaced. How do I know if it's now properly located?
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obispo62
- 5+ Years
- Posts: 10
- Joined: Sat Nov 11, 2017 3:03 pm
- Zip Code: 48768
Re: engine will not start
obispo62 wrote:tmays wrote:You say mag been worked on. Was mag removed? If so,May not be timed correctly
Yes, the mag was removed, but was replaced according to instructions in the engine's Operator's Manual.
Recently the distributor rotor had to be replaced. How do I know if it's now properly located?
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ricky racer
- 10+ Years
- Posts: 6337
- Joined: Wed Sep 12, 2007 8:40 pm
- Zip Code: 49120
- Circle of Safety: Y
- Location: Niles / Buchanan, Michigan
Re: engine will not start
With #1 cylinder at TDC (compression stroke) the rotor shoud be at the 1 o'clock position.
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
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Don McCombs
- Team Cub Mentor
- Posts: 17488
- Joined: Mon Feb 03, 2003 6:45 am
- Zip Code: 21550
- Tractors Owned: "1950 Something" Farmall Cub
1957 Farmall Cub w/FH
1977 International Cub w/FH
1978 International Cub
1948 Farmall Super A - Circle of Safety: Y
- Location: MD, Deep Creek Lake
Re: engine will not start
Mag rotor and pinion must be aligned correctly. See the ninth post down in this thread...
viewtopic.php?f=31&t=63114&p=516280&hilit=rotor+pinion+alignment#p516280
viewtopic.php?f=31&t=63114&p=516280&hilit=rotor+pinion+alignment#p516280
Don McCombs
MD, Deep Creek Lake
Proud Member of Maryland Chapter 39
The best teachers are those who show you where to look, but don't tell you what to see.
A. K. Trenfor
MD, Deep Creek Lake
Proud Member of Maryland Chapter 39
The best teachers are those who show you where to look, but don't tell you what to see.
A. K. Trenfor
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