red top, no spark on cylinder #2 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Este510 · 05-27-2009, 04:52 PM

I recently change the wiring harness on my s13 with a sr20, and now I have no spark on cylinder #2. The wire is blue w/yellow stipe I believe it goes to the ecu.

So my question is what am I looking for?

johngriff · 05-27-2009, 06:36 PM

Use a VOM to test for connectivity from the ecu plug through the harness, ignitor, then to coil packs.

*fliprayzin240sx* · 05-28-2009, 08:02 AM

You tried swapping spark plugs and coilpack around to eliminate them out of the possibility?

Teambadrun · 05-28-2009, 10:00 AM

check that you are using the correct ecu to the correct loom. sometimes some SR20 ECUs have differnt pinouts for coilpacks...
cylinder 1
cylinder 2
C 3
C4

should be

pin 1
pin 2

pin 8
pin 9
dont qoute me thou
havnt done this in a LONG time

landins13 · 05-28-2009, 10:07 AM

definatelly check the coils by switching a known good one with the one that wont fire, that way youll know if its the coil or your wiring. then if its in the wiring check the wiring from the ignitor to the coils and from the ecu to the ignitor. i have seen ignitors go bad, but still work on 3 cylinders. so basically the wiring was good the coils were good but the ignitor was not working for one cylinder properly

Este510 · 05-28-2009, 03:30 PM

The ignitor was not working for one cylinder, Thanks!!!!!!!

05-27-2009, 04:52 PM	#1
Este510 Zilvia Member Join Date: Aug 2006 Location: Cali Age: 44 Posts: 214 Trader Rating: (2) Feedback Score: 2 reviews	red top, no spark on cylinder #2 I recently change the wiring harness on my s13 with a sr20, and now I have no spark on cylinder #2. The wire is blue w/yellow stipe I believe it goes to the ecu. So my question is what am I looking for?

05-28-2009, 08:02 AM	#3
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	You tried swapping spark plugs and coilpack around to eliminate them out of the possibility? __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

05-28-2009, 10:00 AM	#4
Teambadrun Zilvia Addict Join Date: Jan 2007 Location: Melbourne,Australia Age: 46 Posts: 642 Trader Rating: (1) Feedback Score: 1 reviews	check that you are using the correct ecu to the correct loom. sometimes some SR20 ECUs have differnt pinouts for coilpacks... cylinder 1 cylinder 2 C 3 C4 should be pin 1 pin 2 pin 8 pin 9 dont qoute me thou havnt done this in a LONG time __________________

05-28-2009, 10:07 AM	#5
landins13 Zilvia Addict Join Date: Jan 2008 Location: Baltimore Posts: 986 Trader Rating: (3) Feedback Score: 3 reviews	definatelly check the coils by switching a known good one with the one that wont fire, that way youll know if its the coil or your wiring. then if its in the wiring check the wiring from the ignitor to the coils and from the ecu to the ignitor. i have seen ignitors go bad, but still work on 3 cylinders. so basically the wiring was good the coils were good but the ignitor was not working for one cylinder properly __________________ NO HANDS IN PANTS!!

05-27-2009, 06:36 PM	#2
johngriff Post Whore! Join Date: Jun 2004 Location: Long Beach, CA Posts: 4,103 Trader Rating: (4) Rides Gallery: johngriff Feedback Score: 4 reviews	Use a VOM to test for connectivity from the ecu plug through the harness, ignitor, then to coil packs. __________________ [email protected]

05-28-2009, 03:30 PM	#6
Este510 Zilvia Member Join Date: Aug 2006 Location: Cali Age: 44 Posts: 214 Trader Rating: (2) Feedback Score: 2 reviews	The ignitor was not working for one cylinder, Thanks!!!!!!!