Black smoke while hard accelerating !

[AceOspades]

Hey all..i'm new here and saw a lot of usefull topics ! already liking this forum.
but ok,my problem with my nissan fuga 3.5gt is whenever im hard accelerating. i keep seeing black smoke out of my exhaust, note that this happens only when hard accelerating..
on the other hand, after a long drive a faulty burning oil smell is coming out of my engine bay.. any ideas ? or solutions for me ? i would also like to add that i have never noticed any oil spills in my garage

[EniGmA1987]

Could be a bunch of possibilities:

PCV valve needs changing
crack in a PCV line causing the system to be inadequate at moderate RPMs
bad valve cover gasket
bad head gasket
cracked valve cover
bad spark plug not burning the gas well enough
engine tune running extremely rich
excessive gunk buildup in the engine
oil is filled too high
something else entirely


If you have an oil burning smell after normal drive too then Id think maybe a gasket is bad somewhere. You can have leaking oil around the engine without spills for a while. The under carriage tray can catch a decent pool down there without dripping out to the floor. And if the leak is small, a drop every few 10-20 minutes, then the oil might dry up enough on the tray to never really cause a big enough pool to drip out.

[AceOspades]

Could be a bunch of possibilities:

PCV valve needs changing
crack in a PCV line causing the system to be inadequate at moderate RPMs
bad valve cover gasket
bad head gasket
cracked valve cover
bad spark plug not burning the gas well enough
engine tune running extremely rich
excessive gunk buildup in the engine
oil is filled too high
something else entirely


If you have an oil burning smell after normal drive too then Id think maybe a gasket is bad somewhere. You can have leaking oil around the engine without spills for a while. The under carriage tray can catch a decent pool down there without dripping out to the floor. And if the leak is small, a drop every few 10-20 minutes, then the oil might dry up enough on the tray to never really cause a big enough pool to drip out.

I appreciate your reply... the country where i live in(Suriname) there are a bunch of fuga's riding around.and everyone is complaining about this car,that it has a lot of issues. do you guys agree ? most of the cars here are from japan mostly Toyota ..i took a chance for this 3.5.. and seemed it had a lot of cool features and is very comfortable to drive in. but im +100k so i guess here is where i should prob. take notice for every issue . Thanks by the way @EniGmA1987

[Ilya]

Nope, the M/Fuga line of cars in general are pretty reliable. At least in the US. I can't comment on the oil smell, but the black smoke on hard acceleration is pretty normal IMO. Granted I have the V8, but most of us with the V8 have black soot on our rear bumpers. I've also seen this behavior from cars like the Cadillac CTS-V, etc. That being said, if your car looks like it's 'rolling coal' (YouTube it if you're familiar with what that is), then you have a problem. But a little bit of black smoke that is just barely noticeable when accelerating hard I think is normal.

[AceOspades]

Hey ,weird wonder why so many people complain about this specific car. i havn't had any problem with the fuga except for my radiator fan not working .. no it's not that bad(rolling coal) just when hard accel.. but ok now i know . thanks !