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Yes. The smoke test won't show you leaks in the vacuum lines. If your vacuum lines going over the valve cover and into the vacuum canisters, then from the cans down to the boost solenoids are wrapped in braided fabric then they are original and need to be replaced. It might be good to replace them anyway for peace of mind, unless you have a Mity Vac have pump and want to test them for leaks that way. If you don't have the hand pump already just buy vacuum hose and replace it. The hose is cheaper than the pump.
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