Coilpack, no spark-question - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

lady89 · 05-27-2014, 03:16 AM

Hey guys,

I hope I put this into the right corner now

I tried to start my SR20DET, its turning over but not starting. Checked the (new) spark plugs, there is no spark at all.
Checked the coilpacks with the multimeter (all of them), power is going through them (12 V) so am I safe to assume that they are gone?
Many keep telling me tho that it's unusual that all 4 of them gone together...?

The car is parked up for 1,5 years and was only running once inbetween.

Another suggestion I got was to check the wires.
I did take out the dashboard but was careful to not pull any wire and also can't see any lose one near the ECU etc.

So....whats your suggestion?

ultimateirving · 05-27-2014, 11:15 AM

The coils are fired via a ground through the Ecu for each coil so you need to try spinning the cas with the coils grounded to see if you can get any spark. If not start tracing the wires that ground through the ignitor to the Ecu

lady89 · 05-28-2014, 06:56 AM

whats the "cas"?

checked earthing too but that seemed fine

TwoForDeh · 05-28-2014, 07:06 AM

9 times out of 10 its those damn ignitors. it's usually been my issue but the CAS is also a big factor because if its dead or not in right, you wont be getting spark. The CAS is the cam angle sensor. That big circular blob right above the water next on the right side of the head.

lady89 · 05-29-2014, 02:04 AM

Okay, thanks a lot!
Will check so, I have the ignitor in mind too and already one sorted in case I need a new one.
Today a buddy will check as well if he can find something else (maybe a wire etc etc), I keep you updated

So Make Like · 05-29-2014, 06:30 AM

id put my money on the ignitor chip. if all coils are getting power, it's just missing the signal on when to ground and spark. switch ignitors with a friend?

quickdiversion · 05-29-2014, 05:38 PM

I would go with the ignitor as well. The ignitor sends the signal from the ecu that comes from the cas to tell which coil pack to signal. The is a picture on google that shows you how to check the ignitor to see if it is bad.

I have also seen the main ground for the coils go bad, it is grounded to the back of the head. Sometimes when people do the swap they pull this round off and forget to replace it. Also if the coil pack harness has been pulled off, it will have been removed. Check this ground. It is the only on directly on theback of the head on the intake side

lady89 · 05-30-2014, 05:12 AM

I can't find that picture on google, can you give me a tipp where I find it?

thanks for all the tips!!!

lady89 · 06-03-2014, 04:59 PM

in the end it was a fauly plug going into the CAS.

shes running again, thank u all for the tipps

TwoForDeh · 06-03-2014, 04:59 PM

Good to hear buddy.

Sent from my iPhone using Tapatalk

quickdiversion · 06-03-2014, 05:18 PM

Awesome. Glad it wasn't anything crazy.
I am actually get ready to change my cas pigtail cause the current one looks like it could fail soon.

05-27-2014, 03:16 AM	#1
lady89 Join Date: May 2014 Location: Ireland Age: 35 Posts: 9 Trader Rating: (0) Feedback Score: 0 reviews	Coilpack, no spark-question Hey guys, I hope I put this into the right corner now I tried to start my SR20DET, its turning over but not starting. Checked the (new) spark plugs, there is no spark at all. Checked the coilpacks with the multimeter (all of them), power is going through them (12 V) so am I safe to assume that they are gone? Many keep telling me tho that it's unusual that all 4 of them gone together...? The car is parked up for 1,5 years and was only running once inbetween. Another suggestion I got was to check the wires. I did take out the dashboard but was careful to not pull any wire and also can't see any lose one near the ECU etc. So....whats your suggestion?

05-27-2014, 11:15 AM	#2
ultimateirving Zilvia FREAK! Join Date: Nov 2010 Location: arizona Age: 36 Posts: 1,521 Trader Rating: (1) Feedback Score: 1 reviews	The coils are fired via a ground through the Ecu for each coil so you need to try spinning the cas with the coils grounded to see if you can get any spark. If not start tracing the wires that ground through the ignitor to the Ecu __________________ Z32 with lq4 swap Desert Street Scene \|\| Dssevents.com

06-03-2014, 04:59 PM	#10
TwoForDeh Zilvia Junkie Join Date: Feb 2013 Location: NH Posts: 426 Trader Rating: (0) Feedback Score: 0 reviews	Good to hear buddy. Sent from my iPhone using Tapatalk __________________ IG: @thatrhd240

05-28-2014, 06:56 AM	#3
lady89 Join Date: May 2014 Location: Ireland Age: 35 Posts: 9 Trader Rating: (0) Feedback Score: 0 reviews	whats the "cas"? checked earthing too but that seemed fine

05-28-2014, 07:06 AM	#4
TwoForDeh Zilvia Junkie Join Date: Feb 2013 Location: NH Posts: 426 Trader Rating: (0) Feedback Score: 0 reviews	9 times out of 10 its those damn ignitors. it's usually been my issue but the CAS is also a big factor because if its dead or not in right, you wont be getting spark. The CAS is the cam angle sensor. That big circular blob right above the water next on the right side of the head.

05-29-2014, 02:04 AM	#5
lady89 Join Date: May 2014 Location: Ireland Age: 35 Posts: 9 Trader Rating: (0) Feedback Score: 0 reviews	Okay, thanks a lot! Will check so, I have the ignitor in mind too and already one sorted in case I need a new one. Today a buddy will check as well if he can find something else (maybe a wire etc etc), I keep you updated

05-29-2014, 06:30 AM	#6
So Make Like Leaky Injector Join Date: Apr 2013 Location: hawai'i nei Posts: 146 Trader Rating: (0) Feedback Score: 0 reviews	id put my money on the ignitor chip. if all coils are getting power, it's just missing the signal on when to ground and spark. switch ignitors with a friend?

05-29-2014, 05:38 PM	#7
quickdiversion Zilvia Junkie Join Date: Aug 2012 Location: nj Age: 41 Posts: 341 Trader Rating: (4) Feedback Score: 4 reviews	I would go with the ignitor as well. The ignitor sends the signal from the ecu that comes from the cas to tell which coil pack to signal. The is a picture on google that shows you how to check the ignitor to see if it is bad. I have also seen the main ground for the coils go bad, it is grounded to the back of the head. Sometimes when people do the swap they pull this round off and forget to replace it. Also if the coil pack harness has been pulled off, it will have been removed. Check this ground. It is the only on directly on theback of the head on the intake side

05-30-2014, 05:12 AM	#8
lady89 Join Date: May 2014 Location: Ireland Age: 35 Posts: 9 Trader Rating: (0) Feedback Score: 0 reviews	I can't find that picture on google, can you give me a tipp where I find it? thanks for all the tips!!!

06-03-2014, 05:18 PM	#11
quickdiversion Zilvia Junkie Join Date: Aug 2012 Location: nj Age: 41 Posts: 341 Trader Rating: (4) Feedback Score: 4 reviews	Awesome. Glad it wasn't anything crazy. I am actually get ready to change my cas pigtail cause the current one looks like it could fail soon.