SR20DET Running REAL Rich - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

24Zero · 11-13-2009, 01:22 PM

I have replaced the heat temp sensor, checked the MAF and changed the fouled plugs. but for some reason the car is still dumping fuel and running really rich. If I get the car up to speed and keep it in boost it will run with no problems. but when the engine is not under a load it will stall and then not crank back. The original problem was it would not idle long enough to get the engine hot - therefore I checked and replace the heat temp sensor, checked and replaced the fouled plugs. I am almost certian that the MAF is working. The only other thing that I can think could be a problem is an O2 sensor - although functional - may be covered in soot and not reading.

Opinions?

Thanks

Jh

rc1honda · 11-13-2009, 01:59 PM

What modifications have been done if any? s13 or s14sr? Check your injectors make sure they click and that they are not stuck opne. Also check to make sure the little o-rings or grommets are intact they could be leaking fuel from the rial rightn into the cyclinders.

24Zero · 11-13-2009, 02:27 PM

Quote:

Originally Posted by rc1honda

What modifications have been done if any? s13 or s14sr? Check your injectors make sure they click and that they are not stuck opne. Also check to make sure the little o-rings or grommets are intact they could be leaking fuel from the rial rightn into the cyclinders.

mods
1993 Nissan 240SX, Jamie Holladay Photography, Gadsden, Alabama, 180SX,

I'll take another look but we have checked the injectors.

jspaeth · 11-13-2009, 02:46 PM

Holy god that car is modded.

Did you do all of it yourself, or buy it off someone?

EDIT:

Just saw you are running ACT HDSS with that setup.......how in God's name is it not slipping? I was (sometimes) slipping that same clutch kit with only 300 ft-lbs at the wheels......

24Zero · 11-13-2009, 02:51 PM

Quote:

Originally Posted by jspaeth

Holy god that car is modded.

Did you do all of it yourself, or buy it off someone?

EDIT:

Just saw you are running ACT HDSS with that setup.......how in God's name is it not slipping? I was (sometimes) slipping that same clutch kit with only 300 ft-lbs at the wheels......

I did some, I had some done. I did not buy it that way. As for the clutch it does not slip at the current whp but when it was being tuned it started slipping resulting in the hp it has rather that what it is capible of having.

Ceepo · 11-16-2009, 06:34 PM

My car is running rich also my car isn't modded as much as the op's car

Redtop sr20det(stock, brand new rebuild maybe 1000 miles)
Full turbo back exhaust, megan elbow/downpipe, buddyclub spec 2
FMIC/mishimoto, isis piping, hks bov(non recirc)
1995 s14

11-13-2009, 01:22 PM	#1
24Zero Zilvia Junkie Join Date: Sep 2004 Location: Alabama Age: 56 Posts: 335 Trader Rating: (0) Rides Gallery: 24Zero Feedback Score: 0 reviews	SR20DET Running REAL Rich I have replaced the heat temp sensor, checked the MAF and changed the fouled plugs. but for some reason the car is still dumping fuel and running really rich. If I get the car up to speed and keep it in boost it will run with no problems. but when the engine is not under a load it will stall and then not crank back. The original problem was it would not idle long enough to get the engine hot - therefore I checked and replace the heat temp sensor, checked and replaced the fouled plugs. I am almost certian that the MAF is working. The only other thing that I can think could be a problem is an O2 sensor - although functional - may be covered in soot and not reading. Opinions? Thanks Jh __________________ Jamie My Site www.24zero.com 30D \| 17-40L \| 27-70L \| 70-200L Some of my work

11-13-2009, 02:46 PM	#4
jspaeth Nissanaholic! Join Date: Mar 2006 Location: Philadelphia suburbs Age: 40 Posts: 2,347 Trader Rating: (7) Rides Gallery: jspaeth Feedback Score: 7 reviews	Holy god that car is modded. Did you do all of it yourself, or buy it off someone? EDIT: Just saw you are running ACT HDSS with that setup.......how in God's name is it not slipping? I was (sometimes) slipping that same clutch kit with only 300 ft-lbs at the wheels...... __________________ Daily driven

11-16-2009, 06:34 PM	#6
Ceepo Nissanaholic! Join Date: Jan 2008 Location: Cedar City, Utah Posts: 2,007 Trader Rating: (9) Rides Gallery: Ceepo Feedback Score: 9 reviews	My car is running rich also my car isn't modded as much as the op's car Redtop sr20det(stock, brand new rebuild maybe 1000 miles) Full turbo back exhaust, megan elbow/downpipe, buddyclub spec 2 FMIC/mishimoto, isis piping, hks bov(non recirc) 1995 s14 __________________ TW: http://zilvia.net/f/cars-sale/390459...d9s-coils.html

11-13-2009, 01:59 PM	#2
rc1honda Zilvia Junkie Join Date: Aug 2008 Location: Chicago Age: 43 Posts: 433 Trader Rating: (5) Feedback Score: 5 reviews	What modifications have been done if any? s13 or s14sr? Check your injectors make sure they click and that they are not stuck opne. Also check to make sure the little o-rings or grommets are intact they could be leaking fuel from the rial rightn into the cyclinders.