Vacuum Hose Connection

[Johner]

I've been doing a bit of troubleshooting to track down a rough cold start issue. I may have found the source of the problem, but want to check the hose routing before fixing it. I was starting to do a partial drop for a smoke test and spotted something trapped between engine tin and seal. It looks like a hose got pinched on engine install and was left disconnected. I tracked it back to a tee connection by the throttle body. It also looks like there's a connection missing off the charcoal canister, and the hose is the right length to connect up to it. If anyone has access to a vacuum hose.diagram could you confirm this would be the correct place to connect this line? The car is an 83 ROW SC. I've added a few pictures below.

Thanks

John

[Johner]

[joe912/62]

On my 82SC from that Tee one goes to my cruise control and the other to the vacuum limiter

[Johner]

Thanks. I think I may have a different vacuum line setup; the car doesn't have cruise control and was imported in to the US in 84. I'm not sure whether the Euro cars had a charcoal canister, and whether mine was added when it was imported. It's cylindrical with only two fittings, and doesn't look like any images I can find.

I'm finding it a bit tricky to figure out what the vacuum line routing should be. For the small diameter lines I have two off the back of the throttle body; one to the WUR (via thermovalve), and one to the distributor. I have two lines connecting to the front of the throttle body, one is a vent from the top of the WUR and the other is the one that's disconnected and looks like it goes to the top of the charcoal canister. I'm pretty sure the WUR and distributor lines are correct, but it would be good if someone can confirm.

John

[joe912/62]

[joe912/62]

Will this help

[joe912/62]

Having trouble with uploading a photo

[joe912/62]

[Johner]

Thanks for trying. I had to make a couple of attempts to upload the photos; the 'old method' option worked for me

[joe912/62]

[EC900]

When I removed my AC hoses (77) I discovered that I accidentally snapped a brittle canister hose in half. Without that hose connected to the char canister, I didn’t notice any disruption to the idle due to vac leak before of after it was broken/removed and fixed.
Not sure if the ‘82 would have more than an inlet and and an outlet for the canister or the epa setup, but your photo isn’t clear although looks like there’s an additional stem to attach that 3mm hose. There’s not much room for these small hoses to stretch out to any other component, therefore I suspect it belongs on the canister.
Most prominent of my vac leaks were traced a brake booster hose and injector seals.

[joe912/62]

[na2ub]

You should have a small hose like that connected to the charcoal canister. However, it is not a vacuum hose, per se, and is the fuel tank vent hose (that vents to the canister). It routes from a hose nipple on the tunnel (near the fuel lines), up the body, with the fuel lines, then up and over the rear engine bay cross member, under the center crossmember cable clip, to traverse from driver side to passenger side and connect to the canister.

[EC900]

Check the PET if this matches your canister, again vac will be minuscule and stated previously, the gas tank vapors are drawn from the front expansion tank, thru the char canister and back into the engine via diaphragm check valve.
Also here’s another PET example: