ok i would have searched but idk what to type in there. lol here is my car....93 civic cx hatch with a d16z6 swap and a subharness to convert the 1 wire o2 to the 4 wire o2 sensor and to hardwire vtec.

i had this motor in a hatch before and it ran PERFECT besides the syncronisers grinding. had all the same things in it except a VAFC was hooked up in my previous one. then i put the motor in my other hatch after i wrecked the one it was in and now it runs rich as ****. i was getting a code (dont know which one...havent checked it). i pulled the plugs about 5 days ago and they were BLACK along with a used honda o2 sensor from a local junkyard. i bought new plugs and a bosch factory replacement o2 sensor from advance. i have had it in about 40 miles and the o2 sensor is black again and i still get a check engine light. idk what the problem is with the car. anyone have any ideas?? im just about to trade it for a teg or drop a b16 or ls in it and say forget the single slammer.

 

bump

 

damn come on h-t

 

get the code. an injector may be stuck open. its a tough call

 

yeah im thinkin bout takin the intake mani off and cleanin it. did a wonder on my EJ...might do the same for the hatch. i might check the code in a min and will post up what it is. any other suggestions or ideas?

 

could also be bad O2 sensors. diagnosing is the hardest part of working on cars lol

 

well i just bought a BRAND NEW o2 sensor and its black as **** now after only about 60 miles...and it has been black since about 24 miles. and i changed my plugs last week and they were just as black as the o2 sensor...will the throttle cable bein to tight have somethin to do with it at all? lol

 

Your tps sensor wouldn't be broke or anything would it???? And is the settings on ur Apexi VAFC correct??

 

I know that you can adjust for your car to run rich or lean on those apexi VAFC, just don't really know how, I havn't messed with one.

 

nah the tps was fine in the hatch i had before...and im pretty sure you can play with the fuel on the vafc...just not sure exactly why its doin this. wish i could figure it out tho...its pissin me off. lol

 

well for the time being, if I was you.. I would loosen up the tps screws and turn it to make it a little more lean.. just so that it doesn't keep ruining ur o2 sensor and such.