Breather tube

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Old 04-30-06, 02:28 PM
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Breather tube

I have a Briggs engine with a pulsa-jet carburetor (M-103292, T-0803-04, C-81111006). I was wanting to know what exactlly does the breather tube (from the choke to the valve cover) do? What are some of it's symptons of malfunctioning?
 
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Old 04-30-06, 04:15 PM
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The inside part of an engine case needs to be vented to releive any pressure. If it is not vented the case will pressurize which can blow out the oil seals. The air inside the case often contains atomized oil and oil smoke so the vent is plumbed back into the intake somewhere so the engine sucks in and burns the oil & smoke.
 
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