What Do I Do!??

[Todaguy]

I have a 2.0 n/t and at high rpms black smoke shots out the exhaust. My car only has 70,000 miles (and its a 92) and the person that had it before me never took it over 5,000 rpm so i figure the car should be like new right?? Oil change every 3k. new plugs about 3 months ago. The car doesnt burn any oil. I dont understand this smoke . If anyone could help me out that would be great, Its kinda embarassing to beat someone but they are making fun of you about all the black smoke that shot out of your car. Thanks

 

[91 NT Eclipse]

Well its either smoke from oil or smoke from running rich. I'd go with oil.

 

[rookieupgrade1]

Cars as old as ours.......could be alot of things. Are you sure you don't loose any oil in 3000 miles. I don't have black smoke, (well that I can tell anyhow. never followed myself around) but I do burn a little oil. I have seen new cars do the same thing when they kick down at high revs. It is just alot of fuel and its not all burning clean. You run rich at high reve......this is good. I wouldn't worry unless you are killing swarms of bugs and flocks of birds every time you step on it. in other words....can you see this smoke while driveing.....Big cloud of smoke? Or did someone you cruise with notice it?

 

[rookieupgrade1]

Could be the high flow exhaust leting out some of that. A stock exhaust would cover it more. With an intake and exhoust you may just be letting that engine breathe enough that you notice it.

like I said....is it a huge bug killing cloud or just some intermitant puffs.

 

[Todaguy]

its just around redline is when the black smoke happens. And it doesnt burn any oil. Thanks for the posts.

 

[rookieupgrade1]

Sounds like its not alot of smoke then... Am I correct in this assumtion?

That being the case its probably right when you let off to shift. Thats normal and there is really nothing you can do or should. You could lean it out but that would be detrimental to your engine lifespan.

 

[nutshot]

My vote is rich. Don't be concerned unless the motor consumes oil.

 

[Todaguy]

alright thanks alot guys. And ya just little puffs.