RB20 starting problem! Please help! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Michaelwinne · 07-25-2012, 02:34 PM

Alright guys, I've searched and searched and then searched again and I'm stuck. I've recently finished my RB25 S13 swap and I'm having trouble getting the damn thing started. I know I am getting fuel(pump is priming and hoses going to engine are pulsing). I know my CAS is working(I've pulled it out with the key in "on" position and spun it and I can hear the injectors pulsing). So at this point I moved onto spark, started pulling coils and plugs and I stuck a spark plug into a coil and rested the threads on the top of the intake mani, a grounded bolt etc. and the plug isn't sparking. There was also fuel on the plug so then again I know it's getting fuel. I got a multimeter and checked what I could following the FSM and I ended up finding a bad coil pack.. but whatever I am using a coil pack that I'm pretty sure is good, and a brand new spark plug and I'm stuck. I am using a Chase Bays wiring harness so I'm sure the wiring is ok. I pulled the ignitor and tried checking it following the FSM with my multimeter and couldn't figure out what the hell it was saying to do. So if someone could help me find out a way to see if my ignitor is good that would be awesome. Maybe if someone could tell me how to check and see if voltage is getting to the coil pack harness too? I'm just stuck and I wanna get this thing started! Thanks in advance guys hopefully there's some guru out there that can help me!

Michaelwinne · 07-26-2012, 04:56 PM

Anyone with any ideas??

baube · 07-27-2012, 05:45 AM

you should have 12v+ to the thick white wire going on each coil when key is in "on" position

Michaelwinne · 07-27-2012, 04:35 PM

So how do I check that? With a multimeter?

Functionoverform · 07-28-2012, 08:20 AM

Yeah, red to the thick wire and black to ground.

Michaelwinne · 07-28-2012, 08:38 AM

Alright thanks I'll give that a try. I bought a new ignitor so hopefully that fixes it!

baube · 07-28-2012, 06:02 PM

make sure the grounds are all good too, there's one near the ignitor that really needs to be plugged

Michaelwinne · 07-28-2012, 10:00 PM

Yea I have the engine harness grounded to the intake manifold, and then a ground from the intake mani to the shock tower. Should be good right?

Michaelwinne · 07-31-2012, 03:52 PM

Hey guys I got a new ignitor today, tossed it in there and still no spark. Any ideas?

Michaelwinne · 07-31-2012, 10:32 PM

Anyone out there with any ideas? I'm stuck!

07-25-2012, 02:34 PM	#1
Michaelwinne Zilvia Junkie Join Date: Dec 2011 Location: Hurlburt Field, Florida Age: 37 Posts: 447 Trader Rating: (12) Feedback Score: 12 reviews	RB20 starting problem! Please help! Alright guys, I've searched and searched and then searched again and I'm stuck. I've recently finished my RB25 S13 swap and I'm having trouble getting the damn thing started. I know I am getting fuel(pump is priming and hoses going to engine are pulsing). I know my CAS is working(I've pulled it out with the key in "on" position and spun it and I can hear the injectors pulsing). So at this point I moved onto spark, started pulling coils and plugs and I stuck a spark plug into a coil and rested the threads on the top of the intake mani, a grounded bolt etc. and the plug isn't sparking. There was also fuel on the plug so then again I know it's getting fuel. I got a multimeter and checked what I could following the FSM and I ended up finding a bad coil pack.. but whatever I am using a coil pack that I'm pretty sure is good, and a brand new spark plug and I'm stuck. I am using a Chase Bays wiring harness so I'm sure the wiring is ok. I pulled the ignitor and tried checking it following the FSM with my multimeter and couldn't figure out what the hell it was saying to do. So if someone could help me find out a way to see if my ignitor is good that would be awesome. Maybe if someone could tell me how to check and see if voltage is getting to the coil pack harness too? I'm just stuck and I wanna get this thing started! Thanks in advance guys hopefully there's some guru out there that can help me! Last edited by Michaelwinne; 07-27-2012 at 04:35 PM..

07-26-2012, 04:56 PM	#2
Michaelwinne Zilvia Junkie Join Date: Dec 2011 Location: Hurlburt Field, Florida Age: 37 Posts: 447 Trader Rating: (12) Feedback Score: 12 reviews	Anyone with any ideas??

07-27-2012, 05:45 AM	#3
baube Leaky Injector Join Date: Oct 2009 Location: Quebec Posts: 100 Trader Rating: (0) Feedback Score: 0 reviews	you should have 12v+ to the thick white wire going on each coil when key is in "on" position

07-27-2012, 04:35 PM	#4
Michaelwinne Zilvia Junkie Join Date: Dec 2011 Location: Hurlburt Field, Florida Age: 37 Posts: 447 Trader Rating: (12) Feedback Score: 12 reviews	So how do I check that? With a multimeter?

07-28-2012, 08:20 AM	#5
Functionoverform Join Date: Sep 2011 Location: Pennsylvania Age: 32 Posts: 1 Trader Rating: (0) Feedback Score: 0 reviews	Yeah, red to the thick wire and black to ground.

07-28-2012, 08:38 AM	#6
Michaelwinne Zilvia Junkie Join Date: Dec 2011 Location: Hurlburt Field, Florida Age: 37 Posts: 447 Trader Rating: (12) Feedback Score: 12 reviews	Alright thanks I'll give that a try. I bought a new ignitor so hopefully that fixes it!

07-28-2012, 06:02 PM	#7
baube Leaky Injector Join Date: Oct 2009 Location: Quebec Posts: 100 Trader Rating: (0) Feedback Score: 0 reviews	make sure the grounds are all good too, there's one near the ignitor that really needs to be plugged

07-28-2012, 10:00 PM	#8
Michaelwinne Zilvia Junkie Join Date: Dec 2011 Location: Hurlburt Field, Florida Age: 37 Posts: 447 Trader Rating: (12) Feedback Score: 12 reviews	Yea I have the engine harness grounded to the intake manifold, and then a ground from the intake mani to the shock tower. Should be good right?

07-31-2012, 03:52 PM	#9
Michaelwinne Zilvia Junkie Join Date: Dec 2011 Location: Hurlburt Field, Florida Age: 37 Posts: 447 Trader Rating: (12) Feedback Score: 12 reviews	Hey guys I got a new ignitor today, tossed it in there and still no spark. Any ideas?

07-31-2012, 10:32 PM	#10
Michaelwinne Zilvia Junkie Join Date: Dec 2011 Location: Hurlburt Field, Florida Age: 37 Posts: 447 Trader Rating: (12) Feedback Score: 12 reviews	Anyone out there with any ideas? I'm stuck!