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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: Yamaha74 on January 11, 2011, 06:12:12 pm

Title: What is this under the hood?
Post by: Yamaha74 on January 11, 2011, 06:12:12 pm
Can someone tell me what the cannister looking thing in this picture is?  It is on the drivers side and currently has one vent type hose going to it.  It looks like there should be a couple more going to it.  I am guessing it has something to do with emmisions.
Title: Re: What is this under the hood?
Post by: VileZambonie on January 11, 2011, 07:12:38 pm
Charcoal cannister. It vents the fuel tank and stores fuel vapors rather than releasing them into the atmosphere.
Title: Re: What is this under the hood?
Post by: 1980c10 on January 11, 2011, 08:21:09 pm
check your vacuum diagram to see what is missing. btw my canister imploded and sucked charcoal through the carb. now I don't have one.
Title: Re: What is this under the hood?
Post by: Yamaha74 on January 11, 2011, 08:47:22 pm
So I am getting the impression that I don't actually need it.  I will try to find a vacuum diagram and see what else goes to it before I make a decision to pull it.
Title: Re: What is this under the hood?
Post by: hotrod24 on January 11, 2011, 09:00:02 pm
This will help...


http://forum.73-87chevytrucks.com/smforum/index.php?action=printpage%3Btopic=4783.0
Title: Re: What is this under the hood?
Post by: topp on January 11, 2011, 10:06:57 pm
Quote from: Yamaha74 on January 11, 2011, 08:47:22 pm
So I am getting the impression that I don't actually need it.  I will try to find a vacuum diagram and see what else goes to it before I make a decision to pull it.

You don't really need it, unless you have emissions test, or you like the smell of gas fumes....
Title: Re: What is this under the hood?
Post by: Jim Rockford on January 12, 2011, 07:46:45 am
Yea It doesn't hurt to have it. Hook it up correctly and enjoy clean air.
Title: Re: What is this under the hood?
Post by: bake74 on January 12, 2011, 08:15:15 pm
     Topp is correct, if your truck in your state has to have an emission test done, you will need, and without it sometimes you really can smell gas if you do a lot of stop and go driving..