Bill Sebestyen (Bill308)
Junior Member
Username: Bill308
Post Number: 180
Registered: 5-2001
| | Posted on Saturday, April 20, 2002 - 10:06 pm: | |
I need help to orient the 2-way valve on my 1978 308 gts. This valve is part of the evaporative emission control system and was not present when I purchased the car. I'm installing it for the first time. It is fitted in the vapor line running between the fuel/vapor separator, which is plumbed to the right side fuel tank, and the charcoal canister. The location of this valve is on the engine side of the trunk wall, probably below the coolant expansion tank.
The valve flows more in one direction, away from the, "Made in Italy Side" (or convex side) toward the flat side, and looks like this: image{2-way valve}
A drawing of the plumbing is shown in the following extract from the Parts Catalog: image{2-way valve system}
According to my owners manual, this valve has two functions:
- slight tanks pressurization
- air inlet into tanks to prevent any possible vacuum
An extract from the general discription in the owners manual says, "The release of fuel vapors from the fuel tanks into the atmosphere is prevented by a proper system through which the vapors are conveyed to an activated carbon trap in engine compartment where they are abosorbed." |