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Thread: Vacuum lines

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    Default Vacuum lines

    Can anyone tell me where the two vacuum lines on the front side of the throttle body connect to, one is a little larger than the other. It is the first model of the 3800 with the throttle body at the rear of the engine.

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    I figured one of them goes to the canister but what about the second one?
    This engine is in a VC. Big gap between radiator and battery as the battery is in the footwell passenger's side rear.
    If the second vacuum line is not used I could always hook up my vacuum gauge in the dash. Only ever see power though.
    Thanks for the replies.

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    these are ported vacum and not manifold vacum so your gauge wont reading correctly , plug the remaining hole as you dont require it for the VC

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