I will do my best to describe it. On the drivers side of the cylinder head at the front of the motor there is three temperature sensors. Two of them have wires going to them but one has vacuum hoses going to it. This is to purge the gas fumes from the charcoal canister. Obviously one hose goes to the canister. The question is about the other hose. The vacuum hose that goes to the engine. Where is it plugged into the intake manifold? Is it t'd into another vacuum line. If so where does that one run.