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vacum chaos i need help

TC4x4

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Sep 12, 2006
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I am replacing my carburator and am wondering if i have to keep the coffee can like thing in my 84 blazer, it has all thoes black tubes running from it which i think are the vacum can i take that stuff oout and unclutter my engin or what?

Thanks the Mule
 
It is a vaccume reservoir. I think mostly for the AC blend door operation.
 
Coffee can shape piece is EVAP.

You can remove it, although it's illegal and costs nothing in power, if anything it may help economy a hair.

The critical part is the tank vent line. You've got to vent the gas tank somehow, venting it in the engine bay IMO is a bad idea.
 
the thing that looks like a coffee can is not evaps. it is only a reservoir for holding a constant vacume pressure. there is a charcoal canister in there also but it has multiple
 
the thing that looks like a coffee can is not evaps. it is only a reservoir for holding a constant vacume pressure. there is a charcoal canister in there also but it has multiple larger lines and a
 
the thing that looks like a coffee can is not evaps. it is only a reservoir for holding a constant vacume pressure. there is a charcoal canister in there also but it has multiple larger lines and only one vacume line to the solenoid. usually down by the front bumper if I remember.
 
AFAIK EVAP cannister is mounted to the drivers side of the core support. Poster will have to clarify which piece/location he is talking about. I've never seen a vacuum reservoir on the trucks, (cars were round though) doesn't mean they don't exist. :)
 
the vaccume reservoirs used to look exactly like a coffee can untill they went to the 4" round plastic ball type.
 
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