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1998 Vortec wont start in humid or rain weather. Next day it will most of the time. I have change the map sens. ; Coil; Plugs, AC Delco wires; fuel pimp & filter; the complete dist unit; swaped the whole computer out, ECS swap. I have used a spray bottle and even a garden hose to find elec problems when it dose run, top side engine and crank sens. and yet nothing! And still have the same problem?

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