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I just found out that my alternator is shot, so im hoping that could be the culprit, i got new plug wires and fuel pump on it so thats out. tac works but dont seem to be right unless the the rpms are up a lil 1000 or so, and at night with the lights on the tach wouldnt work untill bout 23-2400, maybe alternator is bad??? Im really hopin you guys are wrong about the valve springs....

A bad altrnator will surely do it. Most electronnic ignitions don't like running on 12 volts.

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