running engine with rich fuel mixture for long time - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

xagna · 12-15-2005, 06:12 PM

I just found that the O2 sensor cable was cut and resulted in open circuit. In order to fix this I have disconnected the O2 sensor connector. How much damage will running rich on fuel mixture inflict on the engine?

jtpaintballwdp · 12-15-2005, 08:12 PM

You will mostlikely notice a performance decrease down low because of all the extra fuel.

JigokuZ · 12-15-2005, 08:48 PM

It's won't hurt the engine other than fouling out plugs... and messing up Cats..

sncs14 · 12-15-2005, 08:57 PM

and maybe some carbon buildup in the exhaust ports depending how long it was like that.

xagna · 12-15-2005, 09:22 PM

Fixing the coaxial wire of the O2 sensor will take some time because I never have done it. Hope nothing happens to my engine.

BTW Why is it that the engine feels more powerful? I did 0-60 reading a few weeks ago when I learned that I was getting bad milege. I came out 7.8 seconds.

12-15-2005, 06:12 PM	#1
xagna Zilvia Member Join Date: Apr 2005 Location: ny Posts: 194 Trader Rating: (0) Feedback Score: 0 reviews	running engine with rich fuel mixture for long time I just found that the O2 sensor cable was cut and resulted in open circuit. In order to fix this I have disconnected the O2 sensor connector. How much damage will running rich on fuel mixture inflict on the engine?

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12-15-2005, 08:12 PM	#2
jtpaintballwdp Join Date: Dec 2005 Location: Fairfax, VA Posts: 3 Trader Rating: (0) Feedback Score: 0 reviews	You will mostlikely notice a performance decrease down low because of all the extra fuel.

12-15-2005, 08:48 PM	#3
JigokuZ Leaky Injector Join Date: Jun 2005 Location: Columbus, Ga Posts: 64 Trader Rating: (0) Feedback Score: 0 reviews	It's won't hurt the engine other than fouling out plugs... and messing up Cats..

12-15-2005, 08:57 PM	#4
sncs14 Zilvia FREAK! Join Date: May 2005 Location: Las Vegas Age: 42 Posts: 1,003 Trader Rating: (1) Rides Gallery: sncs14 Feedback Score: 1 reviews	and maybe some carbon buildup in the exhaust ports depending how long it was like that.

12-15-2005, 09:22 PM	#5
xagna Zilvia Member Join Date: Apr 2005 Location: ny Posts: 194 Trader Rating: (0) Feedback Score: 0 reviews	Fixing the coaxial wire of the O2 sensor will take some time because I never have done it. Hope nothing happens to my engine. BTW Why is it that the engine feels more powerful? I did 0-60 reading a few weeks ago when I learned that I was getting bad milege. I came out 7.8 seconds.