I know I'm burning oil because black smoke comes out when i throttle. My question is, would it be easier to buy a new set of pistons with rings and stem valves, or just get a new swap? ! i can tell its lagging when i accelerate and it constantly smells. SIGH i wish there were more people in the import scene where I'm at so it would be easier for me. Is there a thread about replacing the rings too? i can't find anything like it. maybe its just me.

 

What engine?

 

To my understanding Black smoke is not oil burning it's usually running rich, it's got something to do with emission related, oil burning is blue.

 

i had black some coming out of my d15b7.i just put some new oil in and it stoped smoking.do u have any cels.the black some went away but the my still smelled really bad.i was going to replace the egr valve then i just swaped it out

 

ps:the black some went away but the my still smelled really bad.i was going to replace the egr valve then i just swaped it out

 

it could be your O2 sensor, do you have check engine light on?

 

Sorry, did the smoke and smell went away after you replace the EGR?

 

i never replaced the egr valve,just swaped the motor out.

 

Does it still smell and put out black smoke?

 

yup

 

Did you swap the injector and the egr from the old engine that you pulled out?

 

na i have a ls now and those d series parts dont bolt on.

 

How about the O2's sensor are still the same or you replace those too.

 

i think they r the same but i didnt take them off of my old motor and sold it with the o2.i cranked my ls swap without a o2 and it didnt smoke.

 

It is a good possibility that it need new O2 sensor for black smoke, it could also be your exhaust to manifold gasket, or theres a hole in a exhaust pipe for the smell that you smelled?

 

check out somebody running a open header set up and see it smell the same way ur car smells.if it does there is probably a leak in ur header.