Idling Issue - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

P4rD0nM3 · 06-26-2006, 06:33 AM

Most of you know that I did a tune up on my 240 not so long ago.

I replaced the following parts:

O2 Sensor (OEM)
Spark Plugs (NGK Iridium Gapped at .042)
Spark Plug Wires (NGK)
New Distributor Cap
Oil Change
Oil Filter
Fixed Leaking Injectors

Since I have two other cars to drive me around town, the 240 hard parks for around 2 days before I miss start missing driving a 240.

So this is what happened.

Last week, Code 45 (Leaky Injector) appeared. I checked my injectors (Visually) for any leaks, I didn't find any...I don't smell gas or anything when I open the hood or a/c (It used to smell gas when I had a leaky injector).

So I took off the fuelrail and injectors and put i-1 to i-2...so I reset the ECU hoping it won't come back. But after around 10 miles...it was throwing me code 45 again. I ignored it for two more days and then the car started choking at around 3000 and then it idles like shit now.

It idles around 200. It used to idle at 750 or 800 and at 900 when ac is on.

Could it be the injector? I have no idea WHICH injector(s) is/are leaking and/or defective since I don't see any leaks at all when I look at it from the engine bay.

Could it be my spark plugs? I bought them from PDM Racing and they're Iridiums for the KA24E.

One thing that I noticed though is that it says...for HIGH REVVING KAs.

Mine's stock.

I did put the old spark plugs back and it idles good for a minute (Max is 5 mins.) then it idles like shit again.

Any other suggestions? Solutions?

Engine is a KA24E.

NIK90s13 · 06-26-2006, 06:58 AM

Someone correct me if I'm wrong, but the code for leaky injuctors is for one or more of the injectors to be ''open'' when it should be closed, so in is poring fuel in the chamber when it should be closed, so it should be running rich. How's your gas milage?

P4rD0nM3 · 06-26-2006, 07:18 AM

20 mpg heavy foot. It used to be 5 mpg when it was leaking...but then it's around 18 or 20.

P4rD0nM3 · 06-26-2006, 01:52 PM

The first picture has the 1-2 and the second has the 3-4 injectors. What happened to 1?

NIK90s13 · 06-26-2006, 07:03 PM

It looks burnt!I bet you that is the leaky injector. Do you have one to change it with? I didn't realize you have a single slammer, I thought you had the dohc for some reason.

06-26-2006, 06:33 AM	#1
P4rD0nM3 Zilvia FREAK! Join Date: Jun 2005 Location: Not Applicable Posts: 1,183 Trader Rating: (0) Feedback Score: 0 reviews	Idling Issue Most of you know that I did a tune up on my 240 not so long ago. I replaced the following parts: O2 Sensor (OEM) Spark Plugs (NGK Iridium Gapped at .042) Spark Plug Wires (NGK) New Distributor Cap Oil Change Oil Filter Fixed Leaking Injectors Since I have two other cars to drive me around town, the 240 hard parks for around 2 days before I miss start missing driving a 240. So this is what happened. Last week, Code 45 (Leaky Injector) appeared. I checked my injectors (Visually) for any leaks, I didn't find any...I don't smell gas or anything when I open the hood or a/c (It used to smell gas when I had a leaky injector). So I took off the fuelrail and injectors and put i-1 to i-2...so I reset the ECU hoping it won't come back. But after around 10 miles...it was throwing me code 45 again. I ignored it for two more days and then the car started choking at around 3000 and then it idles like shit now. It idles around 200. It used to idle at 750 or 800 and at 900 when ac is on. Could it be the injector? I have no idea WHICH injector(s) is/are leaking and/or defective since I don't see any leaks at all when I look at it from the engine bay. Could it be my spark plugs? I bought them from PDM Racing and they're Iridiums for the KA24E. One thing that I noticed though is that it says...for HIGH REVVING KAs. Mine's stock. I did put the old spark plugs back and it idles good for a minute (Max is 5 mins.) then it idles like shit again. Any other suggestions? Solutions? Engine is a KA24E.

06-26-2006, 06:58 AM	#2
NIK90s13 Zilvia Junkie Join Date: Jan 2006 Location: texas Age: 58 Posts: 471 Trader Rating: (0) Feedback Score: 0 reviews	Someone correct me if I'm wrong, but the code for leaky injuctors is for one or more of the injectors to be ''open'' when it should be closed, so in is poring fuel in the chamber when it should be closed, so it should be running rich. How's your gas milage?

06-26-2006, 07:18 AM	#3
P4rD0nM3 Zilvia FREAK! Join Date: Jun 2005 Location: Not Applicable Posts: 1,183 Trader Rating: (0) Feedback Score: 0 reviews	20 mpg heavy foot. It used to be 5 mpg when it was leaking...but then it's around 18 or 20.

06-26-2006, 01:52 PM	#4
P4rD0nM3 Zilvia FREAK! Join Date: Jun 2005 Location: Not Applicable Posts: 1,183 Trader Rating: (0) Feedback Score: 0 reviews	The first picture has the 1-2 and the second has the 3-4 injectors. What happened to 1?

06-26-2006, 07:03 PM	#5
NIK90s13 Zilvia Junkie Join Date: Jan 2006 Location: texas Age: 58 Posts: 471 Trader Rating: (0) Feedback Score: 0 reviews	It looks burnt!I bet you that is the leaky injector. Do you have one to change it with? I didn't realize you have a single slammer, I thought you had the dohc for some reason.