My car is running lean but only when it get warm
Ive replaced the spark plugs, wires, distrib cap, rotor, full tune up pretty much. o2 sensor, and fuel filter
Its gotten better but still lean
I have a stock 1997 prelude

 

How do you know it's running lean? Do you know your A/F ratio and/or fuel pressure?

 

yea honestly if your going by what an autometer gauge is telling you.... i bet you thats its not 100% accurate. is the car actually acting up.... like bogging or hesitating?

 

and thats opposite of what should happen

 

it hesitates just alittle bit use to be really bad until i replaced all the parts and lean has a curtain smell right?

 

well i guess if you have a wideband nose, u can certainly smell the difference.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by KDUB1 &raquo;</TD></TR><TR><TD CLASS="quote">it hesitates just alittle bit use to be really bad until i replaced all the parts and lean has a curtain smell right? </TD></TR></TABLE>

No, you cannot diagnose a lean condition by smell....maybe the world's top mechanics can, but I doubt any of us are that good.

 

How do you exactly kow your car is running lean. And I hope it not your nose.

What color are your plugs?

Is there black soot on your bumper?

HAve you had your injectors tested?

From what you have said so far, thats what seems to be missing.

(And yes black soot on the bumpers means your running rich, not lean, I know)

 

adding to what acidcracker said, white spark plugs would indicate your lean condition

 

Ya forgot to add that i check them also like a week ago and all 4 spark plugs are white theres nothing on my bumper and ive only checked the injectors with a screw driver (ghetto way) and they all tick so i guess there good

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by KDUB1 &raquo;</TD></TR><TR><TD CLASS="quote">Ya forgot to add that i check them also like a week ago and all 4 spark plugs are white theres nothing on my bumper and ive only checked the injectors with a screw driver (ghetto way) and they all tick so i guess there good </TD></TR></TABLE>
That way is not sufficent. I dont know exactly how a screw driver can tell if your running the injectors lean or not. You have to have them flow tested a shop.

They might not be opening up all the way, or are gunked up. Thats the true way to know for sure.