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What? Inside the truck? None that I know of. Under the hood - plenty of options. How about a photo? Under the hood - on the firewall you'll have hoses/hardlines for the charcoal canister and maybe a hose for the PCV. PS firewall has a hose that goes to the distributor as a breather.

Pics please
 
they are hung in loops on either side. pop the gray plugs out in the rear most inside pillar. there is where the loop hangs...

be careful you dont accidently create a vacuum leak on the tank by disconnecting everything. If the PCM senses there is a leak on the tank, it sets check engine(or gas cap light)
 
Is there a source for a diagram of this tubing system? I made the mistake of blindly ripping out the emissions stuff in my '71 Pig, and now I'm dealing with horrible gas fumes at fill-up.

Sorry about the apparent hijack, but I'd like to know more about those tubes, too.
 
Is there a source for a diagram of this tubing system? I made the mistake of blindly ripping out the emissions stuff in my '71 Pig, and now I'm dealing with horrible gas fumes at fill-up.

Sorry about the apparent hijack, but I'd like to know more about those tubes, too.
That sounds like the vapor canister is venting inside the cabin instead of being sucked back into the intake system. Probably need to reconnect /replace the hose that goes back up to the engine bay. John
 
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