Re: irocz will not start
VATS is working if engine cranks.
On another note, a reference signal goes from dist to ECM and ECM splits signal to coil for spark and to injectors for opening - you might feel a 'click' on the injector during cranking.
Ensure fuel getting to engine by looking at a spark plug.
If wet with fuel, injectors are working. Dry out plugs overnight.
Use timing light to 'see' spark.
Unplug bypass to set initial spark timing, 6° BTDC, I believe. Single wire connector next to ECM in pass side foot panel.
Then once initial timing set, disconnect battery power to erase fault code and connect bypass connector.
Ensure spring and block is installed on coil center so it will touch rotor.
Injectors have switched battery power to one lead, black wire I believe, and colored wire goes to ECM and ECM places a low upon colored wire to open injector, otherwise, close to battery power when not commanded to open.
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