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Injector no fire 700

posted by  boxvolvo on  Wed Oct 19 21:13 CST 2011
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last visit: Fri Oct 24 04:28 CST 2014
[RELATED]

If the engine fires when you spray fuel into the manifold, then you can eliminate ignition system components from the testing.

Most likely cause of injectors not firing is a bad radio suppression relay. Black box, should be somewhere near one of the shock towers depending on the model - I think in a turbo, it's on the driver side - four wires in the plug. Pull the relay from the plug, jumper the two fattest wires, and try to start. If it starts, the relay is bad and needs replacement. $20 from FCP Groton.






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