ka24de running rich - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

josh_adnoh · 08-14-2008, 08:44 PM

its not my timing,check my codes on ecu not that ???its smelling like gas really BAD,bad fuel mileage,it got a ruff idle to and its back fireing? could it be a bad ecu?could it be my injectors?how do i check?

is it safe to run on the track running rich like that
i only got a intake,header and fart can

help me out

deadstock40 · 08-14-2008, 10:58 PM

might be bad injectors or spark plugs.

awesomenick · 08-14-2008, 11:15 PM

Spark plugs/ wires.
Coil.
Injectors/ O rings.
Coolant temp sensor.

Edit: Oh yeah. Does it smell like it's running rich, or does it smell like raw fuel? How do you know it's running rich and not just leaking fuel?

Rnz520 · 08-14-2008, 11:16 PM

or the O so dreaded bad MAF

nvstyles · 08-14-2008, 11:44 PM

i got the same problem on my sohc. everytime itouch the maf wire my idle stumbles and smells like raw gas. cleaned damn near every electrical compnent too. bad maf? or bad wire to the maf plug?

DriftHappy · 08-15-2008, 08:43 AM

I'm having a similiar issue with my KA24DE and I have replaced numerous things in the quest to figure it out. In a matter of fact the #1 cylinder randomly quit firing all together. I put new plugs, plug wires, cap, rotor, & O2 sensor in it. That seemed to take care of the #1 cylinder not firing. I also swapped the distributor & injectors with other used ones I had laying around and also advanced the timing as much as possible. I also had to cut the freakin cat off because it was clogged. Still rich as hell, almost not drivable. I'm running out of ideas. I have a spare ECU laying around. I'm going to try it tonight. If that doesn't help I can only think of the Coolant Temp & MAF. I'll try those next.

beeracing s14 · 08-15-2008, 08:48 AM

id say time to get an SR20DET period

josh_adnoh · 08-15-2008, 09:07 AM

Quote:

Originally Posted by awesomenick

Edit: Oh yeah. Does it smell like it's running rich, or does it smell like raw fuel? How do you know it's running rich and not just leaking fuel?

it smells like burnt gas coming out of the exhaust,bad gas mileage,back fireing? and if it was just leaking gas it would leave a trail of gas

foxyfied · 09-15-2010, 10:09 AM

hey i dont know what exactly setups you have but just something to keep in mind i know we had this problem with two of are ka's if you delete your egr system it ads about 7% fuel jto idle not sure how much while driving so if you did delete your egr you need to get something to manage your fuel hope this helps you guys

08-14-2008, 11:16 PM	#4
Rnz520 Zilvia Junkie Join Date: Oct 2007 Location: Culpeper Age: 35 Posts: 388 Trader Rating: (0) Feedback Score: 0 reviews	or the O so dreaded bad MAF __________________ *93 240sx:KA-T, FLTA-2s, MR TR, Greddy F&R bars, Greddy gauges, Cusco brace, etc

08-14-2008, 11:44 PM	#5
nvstyles Zilvia Member Join Date: Jan 2005 Location: The Wood Age: 39 Posts: 259 Trader Rating: (2) Feedback Score: 2 reviews	i got the same problem on my sohc. everytime itouch the maf wire my idle stumbles and smells like raw gas. cleaned damn near every electrical compnent too. bad maf? or bad wire to the maf plug? __________________

08-14-2008, 08:44 PM	#1
josh_adnoh Leaky Injector Join Date: Apr 2008 Location: nb,canada Posts: 53 Trader Rating: (2) Feedback Score: 2 reviews	ka24de running rich its not my timing,check my codes on ecu not that ???its smelling like gas really BAD,bad fuel mileage,it got a ruff idle to and its back fireing? could it be a bad ecu?could it be my injectors?how do i check? is it safe to run on the track running rich like that i only got a intake,header and fart can help me out

08-14-2008, 10:58 PM	#2
deadstock40 Leaky Injector Join Date: Aug 2008 Location: socal 323.818.714 Posts: 77 Trader Rating: (3) Feedback Score: 3 reviews	might be bad injectors or spark plugs.

08-14-2008, 11:15 PM	#3
awesomenick Zilvia Addict Join Date: May 2006 Location: UT Age: 36 Posts: 945 Trader Rating: (33) Feedback Score: 33 reviews	Spark plugs/ wires. Coil. Injectors/ O rings. Coolant temp sensor. Edit: Oh yeah. Does it smell like it's running rich, or does it smell like raw fuel? How do you know it's running rich and not just leaking fuel?

08-15-2008, 08:43 AM	#6
DriftHappy Join Date: Aug 2005 Location: Arkansas, USA Posts: 21 Trader Rating: (1) Feedback Score: 1 reviews	I'm having a similiar issue with my KA24DE and I have replaced numerous things in the quest to figure it out. In a matter of fact the #1 cylinder randomly quit firing all together. I put new plugs, plug wires, cap, rotor, & O2 sensor in it. That seemed to take care of the #1 cylinder not firing. I also swapped the distributor & injectors with other used ones I had laying around and also advanced the timing as much as possible. I also had to cut the freakin cat off because it was clogged. Still rich as hell, almost not drivable. I'm running out of ideas. I have a spare ECU laying around. I'm going to try it tonight. If that doesn't help I can only think of the Coolant Temp & MAF. I'll try those next.

08-15-2008, 08:48 AM	#7
beeracing s14 Zilvia Addict Join Date: Sep 2006 Location: san marino,CA Posts: 796 Trader Rating: (3) Feedback Score: 3 reviews	id say time to get an SR20DET period

09-15-2010, 10:09 AM	#9
foxyfied Join Date: Sep 2010 Location: stayton, OR Age: 34 Posts: 1 Trader Rating: (0) Feedback Score: 0 reviews	hey i dont know what exactly setups you have but just something to keep in mind i know we had this problem with two of are ka's if you delete your egr system it ads about 7% fuel jto idle not sure how much while driving so if you did delete your egr you need to get something to manage your fuel hope this helps you guys