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Breather tube

Jack B.'s Avatar

Join Date: Jul 2003
Posts: 590

04-30-06, 02:28 PM   #1  
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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Pilot Dane's Avatar
Group Moderator

Join Date: Mar 2003
Posts: 16,676

04-30-06, 04:15 PM   #2  
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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