oh is it .. coz thought its showing diagra of vacuum hoses.. and what do you mean tee off? and umm the fuel tank thing isn't it already attached to the canister?
that diagram,is showing the outline of the IM,thats not a vac hose shown connecting to the IACV,its the IM outline.
OBD2 has emission control gear on the fuel tank,thats connected to the vac system,seperate to the canister return to the tank.
what im saying is that tee,might be the connection that leads back to the fuel tank controls,im not sure,but worth a look.
see if u can see a loose vac hose following where the fuel lines dissapear from the engine bay to run under the car.if not see if loose vac hose hanging out of firewall nearby that might run back to the fuel tank inside the car.
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