Was looking under the hood of my truck today and something strikes me as being not quite right.

The way things are connected:

hose from gas tank > charcoal canister > passenger side valve cover > driver valve cover > carb.

the last two steps seem correct to me, but not the rest. I seem to think the canister shold connect to the air filter cover and the passenger valve should there too.

Anyways, hope someone out there can shed some light on this.

Thanks,

 

I believe that the charchol canister is supposed to go to the air cleaner.

Gas tank to canister> canister to air cleaner

Passengerside v/c to air cleaner (different spot, one with crankcase filter)

Driverside v/c (PCV valve) to carb.

 

Fuel tank --> cannister is correct. Vapours from the gas tank are supposed to vent into the carbon cannister, and then, eventually, sucked into the engine where they get burned.

The crank case connection (elbow and wide hose) is supposed to suck air through the air cleaner filter into the valve covers to compensate for the vapors being sucked out through the PCV.

Does your PCV valve have two connectors? Then yes, the cannister DOES connect to the PCV valve . The PCV valve connection would be the primary source for vacuum for the purge valve. No vacuum, the vapors don't get sucked into the engine and burned. Also, when the engine shuts off the PCV vapors are supposed to migrate to the cannister (I expect), or there's no where for them to go.

I'm not sure where the air cleaner is involved with the cannister. Also, I completely don't understand the hookup on the other side from the PCV valve? Is that the valve cover connection, or is that some kind of solenoid or something? If it's just the air intake for the valve covers, then I'd take that out of the look, since it's interfering with the PCV system.

So, cannister --> PCV --> Carb spacer.

ash
['Man, Ford issued enough emission control books to start a library.']