240Z, 260Z, 280Z Performance / Technical Discussions related to performance motor enhancements, upgrades.

injector 4 is not working

Old 10-12-2012, 01:27 PM
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Smile injector 4 is not working

hi. i have a 77 280 z after a while injector 4 its not injecting first i tough it was the spark plug but even when i bought new spark plug wires the car wasn't working the way it supposed to so i removed the injector and replace it with a new one i changed the conector but still its not working i plug the old injector in the connector with out installing the injector in the car but it seems like the is no power coming out of the connector! any suggestions please!
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Old 10-12-2012, 05:33 PM
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# 4 Injector issues

Originally Posted by Alexoch View Post
hi. i have a 77 280 z after a while injector 4 its not injecting first i tough it was the spark plug but even when i bought new spark plug wires the car wasn't working the way it supposed to so i removed the injector and replace it with a new one i changed the conector but still its not working i plug the old injector in the connector with out installing the injector in the car but it seems like the is no power coming out of the connector! any suggestions please!
ECU may be bad, injector not being energised from brain.
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Old 10-12-2012, 07:16 PM
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Originally Posted by zenzee View Post
ECU may be bad, injector not being energised from brain.
is it the one by the the master cylinder?
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Old 10-13-2012, 08:33 PM
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The 280zx is batch fire... I highly doubt it's the ecu. To answer your question, the ecu is located under the drivers side a-pillar kick panel.

It's more likely faulty injector or wiring harness. Is there any corrosion on the connector? Is the wiring plug brittle / cracked? FricFrac sells EFI harness repair kits.
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