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Farmall & IHC Tractors Discussion Forum
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H loss of power

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wstewart72

07-13-2007 19:10:42




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Have a 49 H, runs great for about 30 minutes after first starting then loses power under load and begins missing. Any ideas would be greatly appreciated




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Bob Kerr

07-14-2007 20:29:01




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 Re: H loss of power in reply to wstewart72, 07-13-2007 19:10:42  
If it is a dual fuel tractor with the original manifold still on it, check to see if the manifold heat setting is on "hot" My F-12 dual fuel will sputter and act up if it is set to "hot" and over heats the fuel mixture. I also have a friend who had running problems with an old fordson kerosene tractor. It ran horrible when hot because he was using gas in it and the manifold was for kerosene only and gets real hot to vaporise the kero. I told him to try using kero in it and see if it runs better, it did!

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Andy Motteberg

07-13-2007 21:13:30




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 Re: H loss of power in reply to wstewart72, 07-13-2007 19:10:42  
First you should start by checking the spark plugs, if they need to be replaced, replace them and gap them properly. If this does not help, try cleaning the points and putting in a new condenser. If this does not work, it may be the coil. A new coil for a distributor is usually around $20, but for a magneto, it is usually around $40-$50. Hope this helps.



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GordoSD

07-13-2007 20:57:21




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 Re: H loss of power in reply to wstewart72, 07-13-2007 19:10:42  
Condensors are famous for breaking down when heated up. It's cheap, change it out.

Gordo



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Andrew Z

07-13-2007 19:33:29




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 Re: H loss of power in reply to wstewart72, 07-13-2007 19:10:42  
Sounds like the coil is going bad. when it does this again check the plugs and see what kind of spark they are getting should be a nice blue spark, yellow or orange spark and its a bad coil.

Andrew



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