300ZX (Z32) Forums Dedicated to 90-96 ZCars otherwize known as the Z32's

Spark plug #1 wont get a spark and all other 5 and getting spark

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Old Apr 22, 2014 | 11:16 PM
  #1  
Fairladyz1990AF's Avatar
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Spark plug #1 wont get a spark and all other 5 and getting spark

Hello i need help figuring out why my spark plug wont get spark, is making a ticking noise but is not getting a spark i need help figuring out where the cables come from so i can check them in order to make it work. Thanks
Old Apr 23, 2014 | 07:53 AM
  #2  
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What do you mean pulling the heads out. Like redoing the heads of the engine? Because that's I believe a 1500 job no bueno. Where do I find those coilpacks?
Old Apr 23, 2014 | 10:16 AM
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I know how they look and everything but I just don't understand why he meant by changing the heads
Old Apr 23, 2014 | 10:20 AM
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Let me help...

Originally Posted by borini63
I hope it's a coilpack is going bad atherwise I am afraid that is time to pull the heads out but before that check compression on that#1
He's saying he hopes it's the coil pack... that's all.

If you suspect a coil pack, swap it to another cylinder if possible to see if the problem follows. There are tests to perform... download and read the FSM. XenonZ32.com Reference
Old Apr 23, 2014 | 11:19 AM
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I did that it gets spark in the other ones but just #1 does not
Get any spark at all
Old Apr 23, 2014 | 01:04 PM
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Turn ignition on, test for 12V on the middle wire terminal at the connector. Positive probe in middle, negative to chassis. Then holding the connector up, so the little disconnect tab is facing up, put the positive probe in middle and negative probe to the left connector. See what you get.
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To have just one plug not providing power, is strange, usually the coil fails, or the wires are not making a good connection somewhere. you have ruled out the bad coil because it fires on another bank. Could be just a bad connection then, try reconnecting your ecu plug as well.

Last edited by Skully; Apr 23, 2014 at 01:11 PM.
Old Apr 23, 2014 | 11:42 PM
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Originally Posted by Skully
Turn ignition on, test for 12V on the middle wire terminal at the connector. Positive probe in middle, negative to chassis. Then holding the connector up, so the little disconnect tab is facing up, put the positive probe in middle and negative probe to the left connector. See what you get.


To have just one plug not providing power, is strange, usually the coil fails, or the wires are not making a good connection somewhere. you have ruled out the bad coil because it fires on another bank. Could be just a bad connection then, try reconnecting your ecu plug as well.


I understand that but I sounds weird to me too I caint believe that only one is working but yeaa I'll try to do that but I think my friend and I did it last time and we couldn't make it work like that either
Old Apr 24, 2014 | 04:15 PM
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If the coil is fine, then you have to work your way backwards through the wiring and the module all the way to the ECU, this is a start with checking for power at the plug. Good luck and have fun!
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