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    How to set base timing on 1989 OMC 3.0L Cobra?

    I have two problems. The first being: I have a 2BBL Holley carb (fresh rebuild) that has an open vacuum port (threaded fitting), on the bottom-left corner beside the choke. This port was NOT plugged, or plumbed into anything. Should it be drawing vacuum or not? Secondly: With this obvious vacuum...
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    1988 Bayliner Ciera Sunbridge 2150 w/GM 302AMRGDP - Surging Idle

    Hi guys! I've got a rough/surging idle question. The engine is a 3.0 liter GM, with a 2bbl.Holley carb. I bought the boat from a dealer, where it had been sitting for several years. After replacing all the filters, spark plugs, distributor cap, rotor, and wires, I still have a "surging idle"...
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