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  1. 97 F350 spins but wont start without boost

    1994-1997 Power Stroke Technical Info
    Ok, guys before i buy new batteries, i have a 97 f350 7.3 it spins quickly but usually doesn't start. I put the booster on it and it starts immediately. A couple of things, the glow plug lights come on and go off as expected, the engine spins quickly and i ran it for several hours yesterday...