Vapor Canister Has No Port For Back To Engine

[boostfrk]

The PO of my '90 5.0 decided to remove the vapor canister, so I have a fantastic rich fuel smell when driving the car (not my cup of tea). I picked up a vapor canister from a guy but it only has one port, the inlet. There isn't a port on the canister to run a vacuum line to the purge valve and then back to the intake. Everything else is identical. He said it was from a 4cyl, which may explain the difference.

Can I use this canister on my V8, and just not run the line back to the intake? I don't get a CEL the way it's currently set up, I just want to get rid of the fuel smell. Perhaps the 4 cyl version just sent the vapors to the canister, then vented out the top of the canister instead of back to the intake?

 

[jrichker]

Check the online auto parts and see the diffrences between the 4 & 8 clinder canisters. Ford would have used the 4 cylinder canister on all cars if they could make it work right.

Charcoal canister plumbing - one 3/8" tube from the bottom of the upper manifold to the rubber hose. Rubber hose connects to one side of the canister solenoid valve. Other side of the solenoid valve connects to one side of the canister. The other side of the canister connects to a rubber hose that connects to a line that goes all the way back to the gas tank. There is an electrical connector coming from the passenger side injector harness near #1 injector that plugs into the canister solenoid valve. It's purpose is to vent the gas tank. The solenoid valve opens at cruse to provide some extra fuel. The canister is normally mounted on the passenger side frame rail near the smog pump pulley.

It does not weigh but a pound or so and helps richen up the cruse mixture. It draws no HP & keeps the car from smelling like gasoline in a closed garage. So with all these good things and no bad ones, why not hook it up & use it?


The purge valve solenoid connector is a dangling wire that is near the ECT sensor and oil filler on the passenger side rocker cover. The actual solenoid valve is down next to the carbon canister. There is about 12"-16" of wire that runs parallel to the canister vent hose that comes off the bottom side of the upper intake manifold. That hose connects one port of the solenoid valve; the other port connects to the carbon canister.

The purge valve solenoid should be available at your local auto parts store.

Purge valve solenoid:

The carbon canister is normally mounted on the passenger side frame rail near the smog pump pulley.
Carbon Canister:

 

[boostfrk]

I understand it won't work as the factory intended because there is no purge solenoid...but how does the 4cyl work without a line back to the intake manifold?

Any diagrams for this system on a 4 cyl?

 

[jrichker]

I understand it won't work as the factory intended because there is no purge solenoid...but how does the 4cyl work without a line back to the intake manifold?

Any diagrams for this system on a 4 cyl?

The only diagrams I have are for a 5.0.