black smoke...

[illinois_erik]

would the same thing happen if the o2 sensor wasnt hooked up at all?

[evil_demon_01]

the spark plugs are a black color at the end...i just put them in not even a month ago...yea my bumper looks exactly like that and yes my CEL does come on at start up then goes off...well the most possible answer would be the o2 sensor then since im smelling gas after i put the gas to the floor? or maybe the ecu cuz its dumping too much fuel...? thanks

Black plugs = rich.
Is the centre (usually white) part black as well?
As Deev and I said, the most likely culprit is the o2 sensor.
But just for the sake of it - Has this problem just occured after recent work / mods or has it slowly gotten worse over time?

would the same thing happen if the o2 sensor wasnt hooked up at all?

The engine check light would be on in that case, But yes a disconnected o2 sensor will cause all sorts of problems.

[brand0n327]

well if i take the o2 sensor off will it be a certain color if its bad...like toasted pretty much.. i know it will be black but any thing else...and no after i dont all my mods it started like 2 months after that...and ive tried injector cleaner and engine restore stuff and nothin makes it better... it doesnt do it as bad tho when i first start the car as in the car being cold it just does it whenever the car is at normal running temp...if its any importance ever since the black smoke has been occuring ive noticed my car hesitates in 1st and 2nd gear a little bit and then after 3k to 4k its fine...thanks

[evil_demon_01]

well if i take the o2 sensor off will it be a certain color if its bad...like toasted pretty much.. i know it will be black but any thing else...and no after i dont all my mods it started like 2 months after that...and ive tried injector cleaner and engine restore stuff and nothin makes it better... it doesnt do it as bad tho when i first start the car as in the car being cold it just does it whenever the car is at normal running temp...if its any importance ever since the black smoke has been occuring ive noticed my car hesitates in 1st and 2nd gear a little bit and then after 3k to 4k its fine...thanks

o2 sensor color is usually black or white - IE rich or lean
So its better when its cold rather than at normal operating temp?
The hesitation will be due to running rich.

You could also try and reset the ecu to see if that helps.

[brand0n327]

correct when its cold it doesnt do it...but when its at normal temp it does it real bad...my car has always ran rich but not as bad as it is now...and how do i reset the ecu? thanks

[evil_demon_01]

To reset the ecu you need to remove the back up fuse (ecu fuse) or just disconnect the battery for 5 mins or so.

[illinois_erik]

Ok im not throwing a CEL, and the ECU's been reset. What next

[brand0n327]

alright im gonna try that and tell ya what it does.. thanks

[brand0n327]

i reset the ecu and it still does it...what else to try? thanks

[f22bcb7tuner]

o2 sensor get a new one from the honda dealer oem

[brand0n327]

already done that too..still blowing black smoke...im lost on what to do

[C91BLX7]

Somebody swap a diesel in when your weren't looking lol?

[brand0n327]

haha when i first saw it thats what i thought...its funny cuz everyone always asks me if it is or not...some one at the honda dealership asked if the egr valve was stuck open...they said that it could be messing up the air fuel ratio???? never heard of that

[brand0n327]

well alright then....thanks.......