Will not start - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Ninjabread · 04-04-2008, 04:26 PM

*EDIT: Here's my revised post.

Quote:

Here's the low down.

When I bought the car, it seemed to have a mind of it's own, and it started when it wanted to. My buddy pulled out the shitty alarm and it seemed to be fine after that.

Over the winter, I took apart the harness because it was super shady, and all I did was fix O2 sensor wire which wasn't getting power (i gave it an ignition 12v), and same with the knock sensor (wire was cut). Other than that, I just took out all the crimp connectors and soldered all the wires in place.

Fast forward to now, the car wont start.
-Fuel pump primes
-3 injectors fire (should be enough to start the car, i think the 3rd injector doesn't fire because of a loose ecu pin.)
-Haven't had the chance to check for spark because I don't have a second person here to crank over the car while i check.
-May have loose ecu pins, how do i fix
-Timing is OK

Now, I did get the car started briefly, and that only happened when i pulled the fuel pump fuse. It started catching and fired up for about 5 seconds before it ran out of fuel. Following that, i put the fuse back in, and didn't start. Pulled it back out, wont start at all anymore.

Ninjabread · 04-04-2008, 04:35 PM

ok small update, it started with the fuel pump fuse disconnected and ran briefly until there was no more fuel.

Now, won't start weather or not fuse is put in.

duffman1278 · 04-04-2008, 04:37 PM

Sounds like a leaky injector possibly?

Ninjabread · 04-04-2008, 05:04 PM

Ya, it's a weird situation. Before I put her away for winter, I knew there was an issue. The alarm on it was super shady, and as soon as I ripped the brain out, it started right up. But it's all taken out now (the alarm) so that's not the issue.

I know I have some loose connections at the ecu plug (no clue how to fix loose pins), so those could be the culprit for the injector not firing, or the starting issue.

I'm just lost because I don't know where to start.

KiLLeR2001 · 04-04-2008, 05:21 PM

Sounds like an injector problem, test the resistance on each injector. Should be ~11.5. Also if your coolant temp sensor is bad itll flood the cylinders causing it to crank but never fire up until the gas is evaporated. Also try pulling your injectors and checking the smaller o-rings to see if they are cracked or warped.

Ninjabread · 04-04-2008, 05:39 PM

I'll go out and test resistance and check orings.

Ninjabread · 04-04-2008, 06:29 PM

O-rings all checked out fine (actually look brand new, i think they are)

and I checked resistance, i set my volt meter to rx10 (don't know if thats the right setting) and i got just a bit over 10ohms on each one.

Ninjabread · 04-05-2008, 07:06 AM

ok so, two things I've learned this morning.

code 34 - knock sensor (gotta fix that, but not related)
code 13 - coolant temp sensor: COULD be related, as a defective one causes rich conditions which may flood the motor

annnd apparently my ecu plug was snug, but it likes being very tight... I discovered that when checking for codes, it seemed to blink randomly unless I held it down, so I tightened it some more and sure enough lights were giving codes. Only thing is that the little screw that accepts a flat screwdriver on the ecu is missing, so I can't turn the screw back to normal haha.

anyway off to cady tire to get new spark plugs and a CTS and well see if she fires!!

Ninjabread · 04-05-2008, 03:00 PM

Got new cts and plugs.

Its now giving me code 21 which is ignition signal.... wtf does that mean haha.

04-04-2008, 04:35 PM	#2
Ninjabread Post Whore! Join Date: Jul 2005 Location: Ottawa, Ontario Age: 32 Posts: 3,492 Trader Rating: (2) Rides Gallery: Ninjabread Feedback Score: 2 reviews	ok small update, it started with the fuel pump fuse disconnected and ran briefly until there was no more fuel. Now, won't start weather or not fuse is put in. __________________ 613DriftWerks.ca

04-04-2008, 05:04 PM	#4
Ninjabread Post Whore! Join Date: Jul 2005 Location: Ottawa, Ontario Age: 32 Posts: 3,492 Trader Rating: (2) Rides Gallery: Ninjabread Feedback Score: 2 reviews	Ya, it's a weird situation. Before I put her away for winter, I knew there was an issue. The alarm on it was super shady, and as soon as I ripped the brain out, it started right up. But it's all taken out now (the alarm) so that's not the issue. I know I have some loose connections at the ecu plug (no clue how to fix loose pins), so those could be the culprit for the injector not firing, or the starting issue. I'm just lost because I don't know where to start. __________________ 613DriftWerks.ca

04-04-2008, 05:21 PM	#5
KiLLeR2001 Post Whore! Join Date: Jun 2007 Location: オーランドフロリダ Posts: 7,955 Trader Rating: (46) Feedback Score: 46 reviews	Sounds like an injector problem, test the resistance on each injector. Should be ~11.5. Also if your coolant temp sensor is bad itll flood the cylinders causing it to crank but never fire up until the gas is evaporated. Also try pulling your injectors and checking the smaller o-rings to see if they are cracked or warped. __________________

04-04-2008, 05:39 PM	#6
Ninjabread Post Whore! Join Date: Jul 2005 Location: Ottawa, Ontario Age: 32 Posts: 3,492 Trader Rating: (2) Rides Gallery: Ninjabread Feedback Score: 2 reviews	I'll go out and test resistance and check orings. __________________ 613DriftWerks.ca

04-04-2008, 06:29 PM	#7
Ninjabread Post Whore! Join Date: Jul 2005 Location: Ottawa, Ontario Age: 32 Posts: 3,492 Trader Rating: (2) Rides Gallery: Ninjabread Feedback Score: 2 reviews	O-rings all checked out fine (actually look brand new, i think they are) and I checked resistance, i set my volt meter to rx10 (don't know if thats the right setting) and i got just a bit over 10ohms on each one. __________________ 613DriftWerks.ca

04-04-2008, 04:37 PM	#3
duffman1278 Post Whore! Join Date: Apr 2007 Location: Covina Age: 33 Posts: 2,844 Trader Rating: (8) Rides Gallery: duffman1278 Feedback Score: 8 reviews	Sounds like a leaky injector possibly?

04-05-2008, 07:06 AM	#8
Ninjabread Post Whore! Join Date: Jul 2005 Location: Ottawa, Ontario Age: 32 Posts: 3,492 Trader Rating: (2) Rides Gallery: Ninjabread Feedback Score: 2 reviews	ok so, two things I've learned this morning. code 34 - knock sensor (gotta fix that, but not related) code 13 - coolant temp sensor: COULD be related, as a defective one causes rich conditions which may flood the motor annnd apparently my ecu plug was snug, but it likes being very tight... I discovered that when checking for codes, it seemed to blink randomly unless I held it down, so I tightened it some more and sure enough lights were giving codes. Only thing is that the little screw that accepts a flat screwdriver on the ecu is missing, so I can't turn the screw back to normal haha. anyway off to cady tire to get new spark plugs and a CTS and well see if she fires!! __________________ 613DriftWerks.ca

04-05-2008, 03:00 PM	#9
Ninjabread Post Whore! Join Date: Jul 2005 Location: Ottawa, Ontario Age: 32 Posts: 3,492 Trader Rating: (2) Rides Gallery: Ninjabread Feedback Score: 2 reviews	Got new cts and plugs. Its now giving me code 21 which is ignition signal.... wtf does that mean haha. __________________ 613DriftWerks.ca

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