Car was running rich but is fine now - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

worr20 · 12-06-2012, 09:16 AM

So I bought an s13 that was running crazy rich. As in, on start and warm up im in the 10's, regular driving im in the 11's and sitting at a light and afr's are dipping into the 9's. I never really got on it till yesterday when I did a good wot 2-3 gear pull. Now the car is fine. 14-15s regular driving and 12's wot. Kinda going reverse but I wonder what the problem was?

240jake · 12-06-2012, 09:44 AM

I had a similar issue where my injector orings would seal, then unseal themselves causing the rich running, i say pull/replace all injector orings and see if it doesnt stop.

glad to hear shes running well again, gotta love it!

worr20 · 12-06-2012, 10:42 AM

Ha well I spoke to soon. I went for a drive just now and its back to rich. jinxed it. lol Ill be checking o rings later today.

worr20 · 12-10-2012, 08:06 AM

so....I cleaned/moved the maf to the stock location cause it was ziptied down by the swaybar. I noticed that the maf wires were cut/reattached and i kind of moved them around a bit and afr's went normal. I guess my voltage is getting messed up.

12-06-2012, 09:16 AM	#1
worr20 Zilvia Member Join Date: Jan 2007 Location: Hawaii/W.V. Posts: 153 Trader Rating: (1) Feedback Score: 1 reviews	Car was running rich but is fine now So I bought an s13 that was running crazy rich. As in, on start and warm up im in the 10's, regular driving im in the 11's and sitting at a light and afr's are dipping into the 9's. I never really got on it till yesterday when I did a good wot 2-3 gear pull. Now the car is fine. 14-15s regular driving and 12's wot. Kinda going reverse but I wonder what the problem was?

12-06-2012, 09:44 AM	#2
240jake Zilvia Member Join Date: Nov 2008 Location: New Mexico Age: 41 Posts: 213 Trader Rating: (0) Feedback Score: 0 reviews	I had a similar issue where my injector orings would seal, then unseal themselves causing the rich running, i say pull/replace all injector orings and see if it doesnt stop. glad to hear shes running well again, gotta love it!

12-06-2012, 10:42 AM	#3
worr20 Zilvia Member Join Date: Jan 2007 Location: Hawaii/W.V. Posts: 153 Trader Rating: (1) Feedback Score: 1 reviews	Ha well I spoke to soon. I went for a drive just now and its back to rich. jinxed it. lol Ill be checking o rings later today.

12-10-2012, 08:06 AM	#4
worr20 Zilvia Member Join Date: Jan 2007 Location: Hawaii/W.V. Posts: 153 Trader Rating: (1) Feedback Score: 1 reviews	so....I cleaned/moved the maf to the stock location cause it was ziptied down by the swaybar. I noticed that the maf wires were cut/reattached and i kind of moved them around a bit and afr's went normal. I guess my voltage is getting messed up.