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Home » Public Forums » GMCnet » air breather/emissions control dumb question
air breather/emissions control dumb question [message #168077] Mon, 30 April 2012 18:02 Go to next message
chasingsummer is currently offline  chasingsummer   United States
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air breather questions, mm 6m-28 and 6t-2
i dont have a hot air pipe, snorkle has space for one, but engine side does not, is this piece important, and related. based on mm 6t-4, all 3 pics on that page shows an air bleed sensor in breather assembly, i have it, it has 2 small air lines on it. one goes to the vacuum piece on snorkel which does not have the pipe as mentioned above, and the other side has a piece of air hose that goes to nothing. and i dont see anywhere to connect it. where should this go, and better yet, is it important?
all input is appreciated
thanks in advance
brian


brian asheboro, nc 75 eleganza, 74 build 119k miles and counting, DOG HOUSE
Re: air breather/emissions control dumb question [message #168089 is a reply to message #168077] Mon, 30 April 2012 19:32 Go to previous messageGo to next message
roy1 is currently offline  roy1   United States
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chasingsummer wrote on Mon, 30 April 2012 16:02

air breather questions, mm 6m-28 and 6t-2
i dont have a hot air pipe, snorkel has space for one, but engine side does not, is this piece important, and related. based on mm 6t-4, all 3 pics on that page shows an air bleed sensor in breather assembly, i have it, it has 2 small air lines on it. one goes to the vacuum piece on snorkel which does not have the pipe as mentioned above, and the other side has a piece of air hose that goes to nothing. and i dont see anywhere to connect it. where should this go, and better yet, is it important?
all input is appreciated
thanks in advance
brian



I'm assuming you have a carburetor. I only hooked that hot air snorkel up when I lived in southern California and it was time for smog inspection. It will help warm the carburetor when the engine is cold but after that it isn't needed. I would leave the pipe off and the small hoses unconnected so the valve in the snorkel lets the air come in the front opening. If you need to pass smog it will need to be operational.


Roy Keen Minden,NV 76 X Glenbrook
Re: air breather/emissions control dumb question [message #168095 is a reply to message #168077] Mon, 30 April 2012 20:07 Go to previous messageGo to next message
Bob de Kruyff   United States
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chasingsummer wrote on Mon, 30 April 2012 17:02

air breather questions, mm 6m-28 and 6t-2
i dont have a hot air pipe, snorkle has space for one, but engine side does not, is this piece important, and related. based on mm 6t-4, all 3 pics on that page shows an air bleed sensor in breather assembly, i have it, it has 2 small air lines on it. one goes to the vacuum piece on snorkel which does not have the pipe as mentioned above, and the other side has a piece of air hose that goes to nothing. and i dont see anywhere to connect it. where should this go, and better yet, is it important?
all input is appreciated
thanks in advance
brian

This system only functions when the engine is cold. Many of us run without it working but frankly your engine will run better just as the choke starts coming off. Depending on your state, it may not pass a visual emission inspection but it won't make any difference in the emission test since that is run with the engine at operating temperature.


Bob de Kruyff
78 Eleganza
Chandler, AZ
Re: air breather/emissions control dumb question [message #168116 is a reply to message #168077] Mon, 30 April 2012 21:33 Go to previous message
Matt Colie is currently offline  Matt Colie   United States
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chasingsummer wrote on Mon, 30 April 2012 19:02

air breather questions, mm 6m-28 and 6t-2
i dont have a hot air pipe, snorkle has space for one, but engine side does not, is this piece important, and related. based on mm 6t-4, all 3 pics on that page shows an air bleed sensor in breather assembly, i have it, it has 2 small air lines on it. one goes to the vacuum piece on snorkel which does not have the pipe as mentioned above, and the other side has a piece of air hose that goes to nothing. and i dont see anywhere to connect it. where should this go, and better yet, is it important?
all input is appreciated
thanks in advance
brian

Brian,
It is not a dumb question, there are none. (Unless you already know the answer.)
Those were put on cars to prevent carburetor icing during idling in cold humid climates. The pipe used to connect to a heat shield (called a stove) on the left side exhaust manifold. The door in the snorkel used to connect to a thermal control inside the air filter housing.

If your not having idle icing problems, you don't need it.

Matt


Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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