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VAC problem

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bobby

07-16-2003 06:26:39




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My son just purchased a VAC and the bottom of the intake manafold just above the carb is iceing up does this mean its running to lean? What could be causing this. Thank you




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RnOld

07-16-2003 08:06:20




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 Re: VAC problem in reply to bobby, 07-16-2003 06:26:39  
This is perfectly normal. Air velocity in this section of the intake creates a localized zone of low pressure, which results in low temperatures. The external icing is a function of the current atmospheric conditions, mainly ambient temperature and relative humidity. There is no fix for this (Except maybe some homemade preheater) but it won't affect the tractor's performance either - just looks funny once in awhile. My '51 VA does the same thing when the moisture in the air is just right.

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