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Harry Ferguson Tractors Discussion Forum
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Re: Hard starting TO 30 in cold weather

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Trac

03-15-2013 05:51:49
71.48.107.173



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Sounds like the compression is a little low warm it up some expands the rings with the help of oil pumping up around the rings helping it seal. Not sure what cold compression should be maybe 120?




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Jason S.

03-15-2013 08:22:19
192.43.65.245



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 Re: Hard starting TO 30 in cold weather in reply to Trac, 03-15-2013 05:51:49  
Actually it will have more compression when the engine is cold rather than hot. Although the rings and piston expand when they get hot, the oil gets thinner and the valve clearances decrease when hot resulting in less compression.



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Trac

03-15-2013 13:28:40
71.48.107.173



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 Re: Hard starting TO 30 in cold weather in reply to Jason S., 03-15-2013 08:22:19  
Jason i know that if your low on compression and tractor sits a spell say two weeks the oil seeps back down off the cylinder walls making the compression less so in winter months the 6 volt battery dos'nt spin fast enough to build compression to fire. just saying



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ruger1

03-15-2013 06:07:49
70.215.12.104



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 Re: Hard starting TO 30 in cold weather in reply to Trac, 03-15-2013 05:51:49  
I checked the compression last year and it was 120 psi on all cylinders.



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Trac

03-15-2013 06:35:20
71.48.107.173



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 Re: Hard starting TO 30 in cold weather in reply to ruger1, 03-15-2013 06:07:49  
Was that in warm weather that's when it start for you just a thought



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