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Discussion Starter · #1 ·
are the 2 connections in the injector clip supposed to be both positive? and there is supposed to a negitive pulse,
or is 1 positive and 1 negitive?
could it be a bad connection somewhere? im not getting fuel to my L28E
 

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107,695 Posts
Discussion Starter · #2 ·
> are the 2 connections in the injector clip
> supposed to be both positive? and there is
> supposed to a negitive pulse,
> or is 1 positive and 1 negitive?
> could it be a bad connection somewhere? im
> not getting fuel to my L28E

i'll try to explain this, and i hope i'm making sense. one side of the connector should have power when the engine is cranking in the key-start position or running in the key-on position. the other side of the connector grounds through the ecu when under the same circumstances. the best way to check for injector pulse is with a noid light. they're a great little tool to have. just plug it in to the connector and crank the engine. if the light flashes, you have injector pulse. pretty simple. otherwise you can use a test light, but you may need some help cranking the motor.
just keep in mind that the ecu switches the ground side of the circuit, turning the injectors on and off.
 
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