4th cylinder misfiring ( ka24de ) - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Cobbs · 07-30-2008, 01:16 AM

I have everything except a spark to my 4th cylinder.

I bought a new distributor/spark plug wires/spark plugs and still nothing.
I scanned my obd and it came up with P03040.

got any suggestions on what I should do?

slidewaysmn · 07-30-2008, 03:34 PM

You sure its not a vacuum problem? faulty injector? If you are sure its spark, yet you replaced the plugs, plug wires and distributor...i would try replacing the injector...common problemo...and what is the or could be a wiring short... anyone else? ha

Z U L8R · 07-30-2008, 06:19 PM

test your injector. and test for noid signal

Dave

turns101 · 07-30-2008, 06:27 PM

so you dont see any spark when you have the wire in the plug on the head and start the car?

OR

You just know you have a #4 misfire?

memo92 · 07-30-2008, 06:52 PM

Quote:

Originally Posted by Z U L8R

test your injector. and test for noid signal

Dave

Quote:

Originally Posted by slidewaysmn

You sure its not a vacuum problem? faulty injector? If you are sure its spark, yet you replaced the plugs, plug wires and distributor...i would try replacing the injector...common problemo...and what is the or could be a wiring short... anyone else? ha

I agree, check that#4 cylinder injector. Might be cloged, so replace it w/ a new one. GL

clark · 07-30-2008, 07:10 PM

Quote:

Originally Posted by Cobbs

I have everything except a spark to my 4th cylinder.

I bought a new distributor/spark plug wires/spark plugs and still nothing.
I scanned my obd and it came up with P03040.

got any suggestions on what I should do?

wait, you got a whole new distributor?

or just a cap and rotor?

Jonnyblaze · 07-30-2008, 11:25 PM

i had the same problem.. my injector was bad.. grab a multimeter and test it

Cobbs · 07-31-2008, 01:31 AM

thanks for the feedback, Ill check my injectors tomorrow.

turns101 · 07-31-2008, 09:20 AM

Was skipped over here because I have a MIata LOL!!

You said you dont have spark!! You can have a good injector or bad injector and with no spark it doesnt matter.

So what are we checking injectors for if there is no spark?

So is there no spark or simply a mis fire??

Jonnyblaze · 07-31-2008, 12:06 PM

whoever gave me neg reg for thinking i dont know how to test the injector can go fuck themselves

Cobbs · 07-31-2008, 04:12 PM

well, I know the cylinder misfire can be alot of things. and as of right now Im trying to narrow it down.

Once I get paid, Ill buy some new spark plugs because I fouled mine up.
Ill clean out the injectors, replace any worn vac lines, check the maf, put in the new plugs, swap out a new fuel filter then try to fire her up.

jaja · 07-10-2009, 02:58 AM

just realized that cobbs was banned.... maybe someone else can help me... (93 KADE)

===
i think i have the same problem.... cobbs - what ended up being the problem? i did the remove the injector connecter test, and found the #4 (closest one to the firewall?) and no change in that one.... (rest were fine - had some change), thus i'm thinking its the injector.

but i just removed the plug in that one and it was pretty pretty dark/black. wondering if it has spark. driving to the auto store to get a new one... maybe that may solve my problem

I also hear this 'hissing' sound near the charcoal canister.... that normal? i think its a vacuum leak, but cant seem to find one... should i just spray the lines with bubbly water?

jaja · 07-11-2009, 04:15 AM

wasn't the spark plug.... tried to pull out the injector, ended up in the ER.. no joke. turning out to be a really expensive 'fix'

07-30-2008, 01:16 AM	#1
Cobbs BANNED Join Date: Jul 2008 Location: 626 Age: 35 Posts: 25 Trader Rating: (0) Feedback Score: 0 reviews	4th cylinder misfiring ( ka24de ) I have everything except a spark to my 4th cylinder. I bought a new distributor/spark plug wires/spark plugs and still nothing. I scanned my obd and it came up with P03040. got any suggestions on what I should do?

07-30-2008, 03:34 PM	#2
slidewaysmn Leaky Injector Join Date: Jan 2007 Location: Brainerd, MN Age: 31 Posts: 136 Trader Rating: (0) Feedback Score: 0 reviews	You sure its not a vacuum problem? faulty injector? If you are sure its spark, yet you replaced the plugs, plug wires and distributor...i would try replacing the injector...common problemo...and what is the or could be a wiring short... anyone else? ha __________________ '95 Zenki '85 Cressida

07-30-2008, 06:19 PM	#3
Z U L8R Zilvia FREAK! Join Date: Jan 2007 Location: Georgia Age: 39 Posts: 1,194 Trader Rating: (0) Feedback Score: 0 reviews	test your injector. and test for noid signal Dave __________________ RB25 280z GT30/76R 441hp/381tq [email protected]

07-30-2008, 11:25 PM	#7
Jonnyblaze Zilvia Member Join Date: Feb 2007 Location: Oxnard, CA Posts: 285 Trader Rating: (1) Feedback Score: 1 reviews	i had the same problem.. my injector was bad.. grab a multimeter and test it __________________ '91 Hatch - Work in Progress

07-31-2008, 09:20 AM	#9
turns101 Zilvia Junkie Join Date: Feb 2006 Location: SoCal Posts: 423 Trader Rating: (0) Feedback Score: 0 reviews	Was skipped over here because I have a MIata LOL!! You said you dont have spark!! You can have a good injector or bad injector and with no spark it doesnt matter. So what are we checking injectors for if there is no spark? So is there no spark or simply a mis fire?? __________________ -Jeff Abbott. Big white guy, little green car. late spooler

07-30-2008, 06:27 PM	#4
turns101 Zilvia Junkie Join Date: Feb 2006 Location: SoCal Posts: 423 Trader Rating: (0) Feedback Score: 0 reviews	so you dont see any spark when you have the wire in the plug on the head and start the car? OR You just know you have a #4 misfire? __________________ -Jeff Abbott. Big white guy, little green car. late spooler

07-31-2008, 01:31 AM	#8
Cobbs BANNED Join Date: Jul 2008 Location: 626 Age: 35 Posts: 25 Trader Rating: (0) Feedback Score: 0 reviews	thanks for the feedback, Ill check my injectors tomorrow.

07-31-2008, 12:06 PM	#10
Jonnyblaze Zilvia Member Join Date: Feb 2007 Location: Oxnard, CA Posts: 285 Trader Rating: (1) Feedback Score: 1 reviews	whoever gave me neg reg for thinking i dont know how to test the injector can go fuck themselves __________________ '91 Hatch - Work in Progress

07-31-2008, 04:12 PM	#11
Cobbs BANNED Join Date: Jul 2008 Location: 626 Age: 35 Posts: 25 Trader Rating: (0) Feedback Score: 0 reviews	well, I know the cylinder misfire can be alot of things. and as of right now Im trying to narrow it down. Once I get paid, Ill buy some new spark plugs because I fouled mine up. Ill clean out the injectors, replace any worn vac lines, check the maf, put in the new plugs, swap out a new fuel filter then try to fire her up.

07-10-2009, 02:58 AM	#12
jaja Zilvia Member Join Date: Apr 2002 Location: Torrance, CA Posts: 179 Trader Rating: (0) Feedback Score: 0 reviews	just realized that cobbs was banned.... maybe someone else can help me... (93 KADE) === i think i have the same problem.... cobbs - what ended up being the problem? i did the remove the injector connecter test, and found the #4 (closest one to the firewall?) and no change in that one.... (rest were fine - had some change), thus i'm thinking its the injector. but i just removed the plug in that one and it was pretty pretty dark/black. wondering if it has spark. driving to the auto store to get a new one... maybe that may solve my problem I also hear this 'hissing' sound near the charcoal canister.... that normal? i think its a vacuum leak, but cant seem to find one... should i just spray the lines with bubbly water? __________________ 93 S13 Vert: KA, 5 Spd, intake, exhaust, coilovers, etc 94 bronco: 6"+35"

07-11-2009, 04:15 AM	#13
jaja Zilvia Member Join Date: Apr 2002 Location: Torrance, CA Posts: 179 Trader Rating: (0) Feedback Score: 0 reviews	wasn't the spark plug.... tried to pull out the injector, ended up in the ER.. no joke. turning out to be a really expensive 'fix' __________________ 93 S13 Vert: KA, 5 Spd, intake, exhaust, coilovers, etc 94 bronco: 6"+35"

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