Crazy no start problem! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

hastyk · 07-17-2014, 02:58 PM

I have a 1993 240sx with a ka24de with a 98 model ka24de head on it (says the previous owner).

I've been struggling with a no start problem here recently and it got really strange. I have the cam timing correct and the Idler sprocket looks correct according to the fsm. I tried moving the distributor around 1 tooth at a time, still nothing. Bought a new harness from wiring specialties, nothing.

The weirdest part is that only the fourth exhaust runner is getting hot... but all the plugs are getting spark.

I'm at a loss.

Thanks for any help.

Kevin

PedroJG · 07-17-2014, 03:13 PM

Have you checked your injectors? it seems like only one cylinder is firing

hastyk · 07-17-2014, 03:15 PM

I was just thinking bout that...can I just take the whole rail out and see if they're spraying? Weird thing is that I bought it with a spun bearing, drove it for a day then took it all apart. Injectors "should" be fine.

Primo's Silvia · 07-17-2014, 03:17 PM

Spray maf cleaner in the intake, if it fires up and smotth for a second then it can b a fuel problem

hastyk · 07-17-2014, 03:21 PM

I sprayed starter fluid in the intake...sometimes the motor will hit like it wants to turn over but no full crank and run deal

PedroJG · 07-17-2014, 03:27 PM

There are different test you can do to your injectors. Unplug your injectors from the harness and check the ohms of the injectors, it should be around 11-14 ohms I believe but don't quote me on it, check service manual for specs.

hastyk · 07-17-2014, 03:28 PM

Ah. I'll try that. Any other suggestions?

Primo's Silvia · 07-17-2014, 03:30 PM

Hmm well it could b a couple things try switching the 4th plug to the 1st see if that changes anything

hastyk · 07-17-2014, 03:35 PM

The timing on the cam gears is almost completely correct...you can hear what I'm guessing is the valves click into place. And no, I just figured this one was good since I was driving it 2 months ago. Any way to see if there are any codes being thrown?

PedroJG · 07-17-2014, 03:36 PM

well it can be a lot of things so try that first and let us know how it goes.

PedroJG · 07-17-2014, 03:37 PM

Check ecu for codes. http://www.tamparacing.com/forums/ni...de-ka24de.html

07-17-2014, 02:58 PM	#1
hastyk Join Date: May 2014 Location: Thomaston, GA Age: 31 Posts: 13 Trader Rating: (0) Feedback Score: 0 reviews	Crazy no start problem! I have a 1993 240sx with a ka24de with a 98 model ka24de head on it (says the previous owner). I've been struggling with a no start problem here recently and it got really strange. I have the cam timing correct and the Idler sprocket looks correct according to the fsm. I tried moving the distributor around 1 tooth at a time, still nothing. Bought a new harness from wiring specialties, nothing. The weirdest part is that only the fourth exhaust runner is getting hot... but all the plugs are getting spark. I'm at a loss. Thanks for any help. Kevin

07-17-2014, 03:13 PM	#2
PedroJG Zilvia Junkie Join Date: Feb 2014 Location: Kissimmee, FL Age: 29 Posts: 337 Trader Rating: (4) Feedback Score: 4 reviews	Have you checked your injectors? it seems like only one cylinder is firing

07-17-2014, 03:15 PM	#3
hastyk Join Date: May 2014 Location: Thomaston, GA Age: 31 Posts: 13 Trader Rating: (0) Feedback Score: 0 reviews	I was just thinking bout that...can I just take the whole rail out and see if they're spraying? Weird thing is that I bought it with a spun bearing, drove it for a day then took it all apart. Injectors "should" be fine.

07-17-2014, 03:17 PM	#4
Primo's Silvia Zilvia Junkie Join Date: Dec 2012 Location: City of industry SOCAL! Posts: 366 Trader Rating: (9) Feedback Score: 9 reviews	Spray maf cleaner in the intake, if it fires up and smotth for a second then it can b a fuel problem

07-17-2014, 03:21 PM	#5
hastyk Join Date: May 2014 Location: Thomaston, GA Age: 31 Posts: 13 Trader Rating: (0) Feedback Score: 0 reviews	I sprayed starter fluid in the intake...sometimes the motor will hit like it wants to turn over but no full crank and run deal

07-17-2014, 03:27 PM	#6
PedroJG Zilvia Junkie Join Date: Feb 2014 Location: Kissimmee, FL Age: 29 Posts: 337 Trader Rating: (4) Feedback Score: 4 reviews	There are different test you can do to your injectors. Unplug your injectors from the harness and check the ohms of the injectors, it should be around 11-14 ohms I believe but don't quote me on it, check service manual for specs.

07-17-2014, 03:28 PM	#7
hastyk Join Date: May 2014 Location: Thomaston, GA Age: 31 Posts: 13 Trader Rating: (0) Feedback Score: 0 reviews	Ah. I'll try that. Any other suggestions?

07-17-2014, 03:30 PM	#8
Primo's Silvia Zilvia Junkie Join Date: Dec 2012 Location: City of industry SOCAL! Posts: 366 Trader Rating: (9) Feedback Score: 9 reviews	Hmm well it could b a couple things try switching the 4th plug to the 1st see if that changes anything

07-17-2014, 03:35 PM	#9
hastyk Join Date: May 2014 Location: Thomaston, GA Age: 31 Posts: 13 Trader Rating: (0) Feedback Score: 0 reviews	The timing on the cam gears is almost completely correct...you can hear what I'm guessing is the valves click into place. And no, I just figured this one was good since I was driving it 2 months ago. Any way to see if there are any codes being thrown?

07-17-2014, 03:36 PM	#10
PedroJG Zilvia Junkie Join Date: Feb 2014 Location: Kissimmee, FL Age: 29 Posts: 337 Trader Rating: (4) Feedback Score: 4 reviews	well it can be a lot of things so try that first and let us know how it goes.

07-17-2014, 03:37 PM	#11
PedroJG Zilvia Junkie Join Date: Feb 2014 Location: Kissimmee, FL Age: 29 Posts: 337 Trader Rating: (4) Feedback Score: 4 reviews	Check ecu for codes. http://www.tamparacing.com/forums/ni...de-ka24de.html