KW951

What exactly does the Charcoal cannister do? I'd really like to just ditch the huge rats nest of hoses and check valves that it hooks into while setting up my Tec-II. The only problem I see to doing this is that it may affect the AC, or heater, or cylinder head cooling?

At the back of the head on the intake side is a coolant pipe going into the head. This pipe has two little vacuum nozzles on it, one black and one red. One of these nozzles hooks into a check valve, which then hooks into the charcoal cannister. The other hooks into the intake manifold. What does this valve do?

My guess is that it is either a thermostat that cuts off coolant flow to help the heater, or it is a valve that opens a direct connection between the intake air pressure and the check valve(and then the charcoal cannister beyond that) based on engine coolant temp.

Anybody know more about this? Am I going to have some wacky heater/ac/coolant problems if I disconnect this stuff?

craig001

The charcoal cannister is part of your emissions control system. So depending on where you live and how stringant your emissions inspection is, it would probably be wise to leave it in.

97xray

Does everyone have one of these charcoal canisters? I once posted a question about the mystery cylinder on the driver's side right next to the wiper motor... is that it?

My mechanic laughed at it and said in the three decades he's been working on these cars he's never seen one. He suggested it was part of the vacuum system unique to Euro cars but wasn't sure.
Any help ID'ing it would be great.

Danno

No it's in your drivers-side fender (outside of engine compartment). If you take off your fender liner, you'll see it.

Skip

[quote]Originally posted by 97xray:
<strong> I once posted a question about the mystery cylinder on the driver's side right next to the wiper motor... is that it?</strong><hr></blockquote>

That's the vacuum cannister for the brake booster circuit.