Black Smoke

[civilizd]

i got new plugs and wires, seems to reduce the black smoke a bit. next is the 02 sensor. then cat.

[civilizd]

how do i know if my 02 censor needs replacing

[dubcac]

Usually a bad 02 sensor will cause the check engine light to come on.

[civilizd]

well my cars check engine light never comes, and the car has 170,000 klms, i guess the 02 censor is still good

[Hybrid_Coupe]

if anything an intake and header will cause the car to run leaner, like i said, if anything at all...it is a possibility that your o2 sensor is going out...or plugged. if the o2 sensor is clogged up it may not throw a cel. an inefficient cat might cause black smoke also.

[98ex2286]

i dont think its the o2 sensor because most likly the check engine light would come on. besides that, try the cat, or get it checked out for a secound opinion..

[NstyGrnHatch]

black smoke is unburned fuel coming out of your exhause, usually this is a timing issue, i wouldnt buy any other replacement parts until you get your timing checked, it might have jumped a tooth or just might not be timed right. Check your timing, then go from there, because even with a gutted catalytic converter, you shouldnt be running really rich like that. o2's might be the cause but they wouldnt cause your car to run that rich. Check your timing first.

[Hybrid_Coupe]

with the timing belt only one tooth off i doubt it would puff smoke... weve had people bring their cars to us that were like 2 or three teeth off and idled fine...just wouldnt rev. however your dizzy timing might be off...hes right about that one.

[NstyGrnHatch]

well i was just suggesting a timing issue. I have seen DOHC hondas be 2 teeth off and been all f-ed up

[civilizd]

timing ehhh! i'll keep my eye on that cocksucker. i'll get it checked out and i'll let you guys know! thanks peeps