Ive got a 94 civic Ex with aftermarket straight pipes and everytime i get on it it spits some black, oil looking stuff out of the tailpipe along with black smoke. I know when a head gasket is blown it would be white smoke and there will be a milky, watery substance on the dip-stick, but there non of that. Does anybody know what it could be??

 

Your AFR is too rich... is your check engine light lit up?

 

yeah it is, what do i need to do??

 

Determine the CEL code... it's different for every engine, usually a shop manual will tell you how to check the code, or you can go to autozone and they will use their code scanner for free. It's probably your oxygen sensor, but it could be something more complex and more expensive. Go check the codes first.

 

well when i start the car she wants to die out so i have to give it alil (neighbors arent to happy) to keep it goin. I know thats the Mass air flow censor but dk how to fix it. the only reason i bought this car was so i can take it to school with me in july.

 

I could be wrong, but you probably have a MAP sensor instead of a MAF sensor. It's an easy fix... it should be bolted onto the throttle body.

 

Hondas are easy to fix. Just be glad you don't have a Ford like me. Just changing the rear spark plugs on my Taurus is more difficult than anything I've done with a Honda.

 

so what do i need to do to fix it?

 

all race cars run alittle rich lol.

 

well yeah, but the size of this puddle under tail pipes in crucial. its like my car is spittin a bottle of water on the ground when its jus sittin there hummin

 

Pull the engine trouble code and post up what it is, then we can help you. You can find how to do that all over the internet. www.google.com