C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1994 corvette intermittent fuel injector pulse

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Old Jun 26, 2015 | 07:15 PM
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Default 1994 corvette intermittent fuel injector pulse

HELP
1994 corvette intermittent injector pulse.
Checking injector pulse with noid light I get good pulse flash sometimes, weak flash sometimes but most of the time none.
Checked more than one injector plug. Same problem
I have changed the opti spark (complete assembly) twice including the harness. Tested ICM today. It checks good.
Coil is firing and so are the spark plugs. Engine will fire off on starting fluid for a few seconds.
Battery is new. Replaced timing chain and sprockets. New fuel pump and filter


Jumped pin 4 and 12 on obd plug. 1 reads C 12.
Could the injector driver in computer still be bad.









It died when water pump drown opti spark. Hasn't run since.
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