Hard Start When Its Cold

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capecodcub
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Hard Start When Its Cold

Postby capecodcub » Sun Jan 08, 2017 6:47 pm

Hi Guys, My 49 with Mag is really hard to start when the temps go down. I can start it easily with the crank start when it's warm out, say over 40. I just bought a new battery so that I wouldn't have to crank it with the plow blade on and also when it is cold. This morning, 15 degrees, it took me 15 minutes to finally get it going. It will pop and spit. I try different choke positions, different throttle positions, everything I can think of. The starter grabs for a second than disengages really quickly. Sometimes seems like with different choke positions it will crank longer. Remember, it starts easily when it is above 40. The motor is freshly rebuilt, timing is fine, all ignition is fine. I have a theory, but would like to know what those with more experience think.
David Svarczkopf

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indy61
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Re: Hard Start When Its Cold

Postby indy61 » Sun Jan 08, 2017 7:10 pm

The starter disengages because it should have started. These engines flood easily with too much choke. Slow cranking can be caused by many different things.

tst
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Re: Hard Start When Its Cold

Postby tst » Sun Jan 08, 2017 7:23 pm

make sure you have good battery cables and good tight clean connections so the starter can spin the engine as fast as it needs to start

coppersmythe
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Re: Hard Start When Its Cold

Postby coppersmythe » Mon Jan 09, 2017 7:13 am

Mine were "acting up" this past weekend . Had trouble knowing how much choke and how long . We never use them down here . Got down in the low 20's .coppersmythe..........

Eugene
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Re: Hard Start When Its Cold

Postby Eugene » Mon Jan 09, 2017 7:55 am

Check your ignition timing with a timing light. Check the timing at engine cranking speed and then at full advance - engine running. Also check the ignition timing on the #4 cylinder.
I have an excuse. CRS.

inairam
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Re: Hard Start When Its Cold

Postby inairam » Mon Jan 09, 2017 8:40 am

Eugene, If you check the timing on #1 and it is OK and you check #4 and it is not what can you do about it?
When you only have 9 horsepower you need to know the names of all of the ponies!

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Buzzard Wing
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Re: Hard Start When Its Cold

Postby Buzzard Wing » Mon Jan 09, 2017 8:52 am

It's cold out..... Later manuals say 5W-20 between 32F and -10F.
1971 Cub (Rufus) 1950 Cub (Cathy) 1965 Lo Boy Fast Hitch (Nameless III) 1970 Cub 1000 Loader & Fast Hitch (Lee)

Eugene
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Re: Hard Start When Its Cold

Postby Eugene » Mon Jan 09, 2017 9:35 am

inairam wrote:Eugene, If you check the timing on #1 and it is OK and you check #4 and it is not what can you do about it?
Check the distributor for slop in the bushing(s). Check the mechanical advance. Most likely worn bushing(s).
I have an excuse. CRS.

ParlowMillFarm
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Re: Hard Start When Its Cold

Postby ParlowMillFarm » Mon Jan 09, 2017 11:09 am

Hey there Cape Cod Cub,

I have had the same issues starting when it gets very cold (although lot's of folks seem to have it mastered)

I was planning to make a modification once I'm reassembled that appeared in an earlier post.

http://www.farmallcub.com/phpBB2/viewto ... =1&t=87116

John


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