84gls12a5spd- vac line below others?
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84gls12a5spd- vac line below others?
On my 84gls 5spd there is an extra vacuum opening below all the others on intake manifold- Appears from haines manual that it has to do with automatic trans. should it be plugged? - last guy didn't, and I paid to replace a manifold gasket cause I was hitting opening with carb cleaner and thought gasket was blown!
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