The coffee can
New User
Joined: Sep 2001
Posts: 3
Likes: 0
From: Just outside Halifax Canada
The coffee can
Does your truck have a/c? I had an old Granada that had auto climate control and there was a vacuum reservoir (more like an apple juice can)that maintained vacuum to the control head. Could this be your coffee can? You didn't indicate what if any lines were coming from the can.
Got my curiousity up...
Got my curiousity up...
Senior User
Joined: Aug 2001
Posts: 118
Likes: 0
The coffee can
these are usually fuel vapor vacum chambers. If one of the lines goes from the can back to the fuel tank it is used to suck fuel vapor into the carb to be burned. The can is to be sure fuel splash that gets sucked down the tube will evaporate in the can and not flood the carb or intake with fuel. Can you tell where both of the vacum lines go? This will give a better idea of what this vacum chamber is used for in your truck.
Elder User
Joined: Apr 2001
Posts: 997
Likes: 0
From: texarkana, tx
The coffee can
It's the Charcoal Canister - pop the top off and you can see the charcoal that lost it's ability to filter fuel vapors years ago. I re-located mine back to the rear of the truck to show off more of my engine chrome. The cannister uses the same crystaline charcoal your fish tank uses....
The LaptopGeek -----
1974 White F100 Custom Fleetside
460 bored .040 over & C-6 automatic 2WD
Lunati cam, L&L Headers / mounts
Holley Avenger 770CFM & Edlebrock RPM
Plush black leather 40-20-40 bench seat
38 gallon JC Whitney fuel tank
The LaptopGeek -----
1974 White F100 Custom Fleetside
460 bored .040 over & C-6 automatic 2WD
Lunati cam, L&L Headers / mounts
Holley Avenger 770CFM & Edlebrock RPM
Plush black leather 40-20-40 bench seat
38 gallon JC Whitney fuel tank
Post Fiend
Joined: Jan 1997
Posts: 23,165
Likes: 17
From: Enjoying the real world.
The coffee can
Seems there's two definitions floating around. There is indeed a charcoal canister but early trucks with power brakes had vacuum canisters between the power booster and the manifold.
Ken Payne
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Ken Payne
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New User
Joined: Sep 2001
Posts: 3
Likes: 0
From: Just outside Halifax Canada
The coffee can
Jim
I would have to agree with Ken that this is a booster for the braking system. I thought about the charcoal cannister when I replied before but with only two lines coming off of it and the juice can shape this is unlikely. The charcoal cannister in my 78 (can't be much different than your 77) has three lines and is a plastic container that in no way resembles a juice can.
A thought...if your as lucky as me your local library may have the factory manuals for your truck. The main branch here in Halifax has the complete 5 volume set for my old truck. They are invaluable for sorting out odd questions like this. So try your local library, you never know.
I would have to agree with Ken that this is a booster for the braking system. I thought about the charcoal cannister when I replied before but with only two lines coming off of it and the juice can shape this is unlikely. The charcoal cannister in my 78 (can't be much different than your 77) has three lines and is a plastic container that in no way resembles a juice can.
A thought...if your as lucky as me your local library may have the factory manuals for your truck. The main branch here in Halifax has the complete 5 volume set for my old truck. They are invaluable for sorting out odd questions like this. So try your local library, you never know.
Posting Guru
Joined: Jan 2001
Posts: 2,358
Likes: 3
From: Nebraska
The coffee can
OK guys, I've seen one on a 74 F-250, but my 79 and 86 don't have them. However, a friend's 96 F-150 has one too. I can't remember what was coming out of it, but the truck did have a separate charcoal canister. The only pattern I've seen is the one's with them (the cans) have air conditioning, so it might have something to do with that?
Lead Driver
Joined: Nov 2000
Posts: 6,596
Likes: 332
From: Albuquerque
The coffee can
Does your battery set on the passenger side up front? Mine used to have a "gallon juice can" black in color under my battery. It was the "charcoal canister" I think. Several small lines to carb and tank.
I have no vacuum reservoir for the brake booster (straight hose from the intake manifold) but do have a small ball vacuum reservoir that will move the heater door motors after the engine is off if you change the control settings.
If you had the canister it would be long passed working anyway but pay attention to the lines that might be disconnected. One goes to the tank!
Good to see the flag!
1977 Ford F-100
400m/c6/4:11/Gear Vender O.D.
Crane hydralic roller, forged, ported polished,Deamon,Edlebrock, yada, yada, yada
280,000 miles
Stock on the outside
modified/rebuilt everything
I have no vacuum reservoir for the brake booster (straight hose from the intake manifold) but do have a small ball vacuum reservoir that will move the heater door motors after the engine is off if you change the control settings.
If you had the canister it would be long passed working anyway but pay attention to the lines that might be disconnected. One goes to the tank!
Good to see the flag!
1977 Ford F-100
400m/c6/4:11/Gear Vender O.D.
Crane hydralic roller, forged, ported polished,Deamon,Edlebrock, yada, yada, yada
280,000 miles
Stock on the outside
modified/rebuilt everything
Senior User
Joined: May 2005
Posts: 131
Likes: 2
From: southern cal.
I'd like to revive this thread. My "coffee can" has 3 tubes coming off it, no hoses. The smog guy says it needs to be hooked up,very important! The mechanic I use says it is a vacum resevoir for the air conditioner. I guess I'll have it hooked up anyway so I can pass my smog test. I would really like to know for sure exactly WHAT this can is for.
ps 1977 150 400ci
Don
ps 1977 150 400ci
Don