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he got it timed at a shop and didnt help. well look into that central injector thing. that would just be a fuel pressure regulator woudnt it?...or does it have a timed spray? yes tru2chevy, all this because of a backfiring problem. it started backfiring and he immediately replaced the plugs and wires. it never backfired again. after that it never ran right again. could it be the ecm or would that have different symptoms?
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