Wondering what this piece is and what needs to be hooked up to it. The truck had been running good but started a problem again. Seems like a vaccumm leak because the truck will idle good with the choke on and as soon as push the choke in, it wants to die. If i give it gas itll rev back up and then die. If i barely press the gas in, i can hear a hissing noise and itll die.
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