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Ted in NE-OH 
Orange Level
Joined: 12 Nov 2009
Location: Austinburg OH
Points: 1703
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 Topic: IB Random miss
Posted: 03 Jul 2017 at 7:59pm |
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I have an IB with a random miss. Removing one spark plug wire at a time , each wire slows engine down, valves do not appear to be sticking. Tractor has mag. Where and how do I find tha cause. Engine was recently rebuilt.
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CA, WD, C, 3 Bs, 2 Gs, WC, I-400, 914
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steve(ill)
Orange Level Access
Joined: 11 Sep 2009
Location: illinois
Points: 88293
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Posted: 03 Jul 2017 at 10:55pm |
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what kind of spark plugs ? May need a new set.
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Like them all, but love the "B"s.
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Gerald J.
Orange Level
Joined: 12 Sep 2009
Location: Hamilton Co, IA
Points: 5636
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Posted: 04 Jul 2017 at 8:18am |
Recheck the valve clearance settings. I have a shop manual on line at: http://www.geraldj.networkiowa.com/Trees/Allis-Chalmers-G-B-C-CA-Service.pdfGerald J.
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Hubert (Ga)engine7
Orange Level
Joined: 12 Sep 2009
Location: Jackson Cnty,GA
Points: 6496
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Posted: 04 Jul 2017 at 8:35am |
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You may need new plugs and solid core wires.
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Just an old country boy saved by the grace of God.
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steve(ill)
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Joined: 11 Sep 2009
Location: illinois
Points: 88293
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Posted: 04 Jul 2017 at 9:57am |
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and make sure the MAG cap does not have any cracks or carbon tracks that could cause a short between leads.
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Like them all, but love the "B"s.
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dave63
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Joined: 01 Feb 2011
Location: Lineboro Md
Points: 2382
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Posted: 04 Jul 2017 at 10:32am |
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I never had any luck with Champion plugs, even new ones
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The universal answer to all questions is yes, how much do you want to spend?
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