what does that usually mean it has a rough idle and blows black smoke

 

Bad fuel injector/injectors?

 

Engine is running to rich or flooding....have autozone pull the codes out of the ECM and go from there. OR, if you are a DIY`er...check fuel pressure and make sure you have 36lbs at idle. If not, injectors O-rings may be leaking............Damn Injectors

 

nah I had my injectors do that but it was white smoke and burned my eyes black smoke could be burning oil although its usually blue smoke with oil. do compression check.

 

Everyone here jumped immediately to the worst thing, but...

...how long has it been since you changed your air cleaner?

 

are you the same guy who drove his max to 130 mph (tops off at 125mph) and then it stated ideling funy? If you are you also stated that your oil was coffee colored brown (light brown).

Now, is your head gasket blown???

if your not im sorry.

 

Usually means smtg wrong, I mean there...

For me it meant ign & TPS. But could mean anythin under the sun: http://www.cardomain.com/memberpage/748507/14


U never really know, as for some, toothache means this. And they do not even recognize!:
http://www.cnn.com/2005/US/01/16/nai....ap/index.html

 

yeah i am the guy who pushed my car to the limit i had somebody check it out they said it wasnt the headgasket they also think it is a injector or multiple injectors. damn injectors does anyone have a write up on them for the se

 

look in da stickies, dere's a writeup in dem dar hills

 

check the water temp sensor before you do anything else. I had a similar problem...

 

if his max wont drive well, how is he supposed to get up hills to see stickies?

 

where is the water temp senosr located at .

 

Ok I didnt want to do a repost.

I notice my car only has black smoke under heavy acceleration. Or if I am not moving and and hit the RPMS to 3500 black smoke will come out. Am I having the same problems as everyone else since mines only happens on had accelaration?

thanks,

 

Check your timing, and O2 sensor

 

how is your gas mileage?

 

my gas mileage is pretty good. on the high way close to 400 miles and around the city roughly 320 to 340ish.

It's a 2002. sorry I didn't realize i was in the wrong generation.
SE 6 speed.

 

sounds like your cats fell apart.

 

ok is that something i need to change right now or can hold off for a while. pretty much want to wait a little but dont want to cause further damage either. let me know.

 

Are you sure it's not dark blue smoke instead of black?

You might be burning oil..

 

i think you might be right. i just went out side and hit the gas while i had a coworker watch and it defintely wasnt your typical black smoke. So I'll try again later on tonight once it gets darker.

 

yeah, when you stated your gas mileage numbers, i really didn't think it was fuel related.

If the car is only puffing out blueish smoke at cold start up, then you are probably looking at worn valve stem seals. If it does it even when warmed up, then you are looking at worn/cracked piston rings, both are very labor intensive/expensive to have have repaired.

 

oops, I'm backwards.
first you start with the smoke from burning oil (fairly common FWD VQ35DE malady) then they destroy the converters which then get sucked into the engine and destroy the engine. I have no clue how they get sucked in but there are several documented cases of it happening

 

Mine is blowing white at cold start, but doesn't do it all the time while driving. Do I have worn value stem seals?

 

Are you sure it's not just normal condensation smoke?(Common occurrence in colder months) If white smoke continues after initial warm up, you have an internal coolant leak, i.e., cracked head/blown head gasket.

 

so I know the answer but just want to make sure for my sanity. If I have 75k on it and i want it to go to 150k. Do I need to get this fixed?

 

Thats really up to you, all you have to do is keep dumping oil in it when it gets low and the engine will most likely not up-n-die on you.

But do I want to keep doing this for the next 75k/however many years is the question you have to ask yourself.......

 

great point. do you know how/want to fix this for me. lol I can meet you in Blacksburg, va.

 

if it keeps burning oil, you WILL go through catalytic converters and o2 sensors way more frequently than normal.

 

lol!...

yeah i could fix it, no I'm not traveling to do it.

IMHO, you would probably get off cheaper/faster by replacing the engine with a known good used engine. that can be done in a days time, rebuilding your current engine would take much longer..

 

and then if you want to FULLY rebuild the other engine at your convenience and pace, you can, then put it back in when it's ready. that's what we're doing on my friend's car (not a maxima) b/c his engine is on its way out... but we're rebuilding it and putting it back in sometime down the road, maybe late summer. in the meantime we're putting in a JY engine.