SR puts out blue/black smoke. Help!!! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

drifter808 · 10-10-2005, 09:25 PM

I have been driving my SR redtop for about 3 months now. I have just recently started to get some smoke out of my exhaust. When im driving i don't notice any smoke although there probably is just cant see it. When i do notice it is when im done driving it and the turbo timer is running, some smoke is coming out of the exhaust. It used to only do it once in awhile and thought it was just normal cause i only noticed it after i removed my catalytic converter. I has been doing it more though and it is causing concern for me cause im trying to sell it right now and i dont want it to be smoking.

If anyone has any ideas as to what this could be please post. I need to get this fixed. I have searched but alot of the smoking problems were white smoke, not blue/black smoke.

Thanks in advance, if you post.

Derek

Neejay · 10-10-2005, 09:51 PM

"when im done driving it and the turbo timer is running, some smoke is coming out of the exhaust"

Is it a stock turbo? I think Ive heard that the exhaust smokes if the turbo is/is going bad (assuming its not something internal within the engine). Someone correct me if Im wrong.

Yoshi · 10-10-2005, 09:51 PM

what does the smoke smell like?
blue = oil... not good.

drifter808 · 10-10-2005, 10:43 PM

Yeah it smells like its burning oil. Its a stock turbo running 10-11 psi. I did a compression test and was around 150 across the cylinders. If it is a headgsket i do have a spare apexi one i can put in as a last resort. any more ideas. The smoke is more on the black side though with a hint of blue smoke. If its something i can tune with an SAFC,good, cause i have one.

Irukandji · 10-10-2005, 10:48 PM

if you blew a headgasket the smoke coming out of the exhaust should be more whiteish. If you have blue smoke its probably burning oil.. which means your piston rings are probably crap. Check your oil level frequently if you want to verify this. But this is all speculation, you still havent given us substantial information. If piston rings are bad, the compression is usually a little lower. I know sr's usually have 160 across all four.

Var · 10-10-2005, 10:51 PM

If the compression test was recent i would blame the turbo.

drifter808 · 10-10-2005, 11:18 PM

well i did the compression test today. I dont have a feeling it is the rings cause on my last SR my oil consumption was terrible then i blew a piston. This new SR has no oil consumption at all. My bet is the turbo. It still pulls hard and all but on my other engine when i recieved it the turbo was running 17psi for about a month( i didn't know,no boost gauge and had to break it in properly

. Well that is the turbo that i am running now cause the one on the new engine was seized. If you understand that. It wouldn't surprise me if it was the turbo. But i want to be certain it is before i get another one. any other advice as to what it could be.

240meowth · 10-11-2005, 01:04 PM

blue smoke=oil
black smoke=rich
white smoke=lean

that's all i know about smokes

CarloSR · 10-11-2005, 03:49 PM

Do a compression check.
I would have told you right away that's the turbo but in idle if it keeps smoking seems that you have a ring or piston with problems.
Good luck man.

Var · 10-11-2005, 06:16 PM

Quote:

Originally Posted by drifter808

well i did the compression test today. I dont have a feeling it is the rings cause on my last SR my oil consumption was terrible then i blew a piston..

Quote:

Originally Posted by carlosr

Do a compression check.
I would have told you right away that's the turbo but in idle if it keeps smoking seems that you have a ring or piston with problems.
Good luck man.

READING is important, especially on forums.

WILDACEX187 · 10-11-2005, 06:38 PM

could it be valve guide seals or something like that? i know they cause smoking in ka's

drifter808 · 10-11-2005, 09:11 PM

Any more ideas. I still think that it is the turbo. Im gonna go ahead and try and find a s15 t28 and bolt it on. If my problem isn't fixed, i have another spare SR with all new pistons, rings and apexi headgasket. So i'll just part it out and rebuild this one. Screw selling it, with the new turbo its mine. Im not gonna let some one else have all the fun.

If there are anymore ideas please let me know.

Derek

ledzeppelin240 · 10-11-2005, 11:18 PM

Could be PCV valve, clogged oil control ring, top compression ring bad, the turbo, worn valve guides, or bad valve guide seals (which would make any engine smoke while it idles or on startup).

White smoke would be coolant...

drifter808 · 10-12-2005, 12:13 AM

Well the car doesn't smoke when i first start it up. It seems like only i have been running the car in boost then park it and let the turbo timer run that i notice the smoke. I cant tell if my turbo is smoking when im driving because i cant really look behind when going fast on these crappy ass hawaii roads. The engine still runs strong but im gonna do a couple more tests anyways just to be certain. Hopefully i dont have to rebuild the whole engine. I can do it i just dont prefer to do it mainly cause this is my daily driver and cant have a long down time.

drifter808 · 11-28-2005, 11:37 PM

Well its been hard times for money but i finally replaced it with another stocker and the car is a whole new beast. It seems alot faster then what it was before. The old turbo when i pulled it out had alot of shaft play. So glad that it is finally running good. Thanks for all the help

10-10-2005, 09:25 PM	#1
drifter808 Zilvia Addict Join Date: Aug 2005 Location: Big Island Age: 36 Posts: 829 Trader Rating: (4) Rides Gallery: drifter808 Feedback Score: 4 reviews	SR puts out blue/black smoke. Help!!! I have been driving my SR redtop for about 3 months now. I have just recently started to get some smoke out of my exhaust. When im driving i don't notice any smoke although there probably is just cant see it. When i do notice it is when im done driving it and the turbo timer is running, some smoke is coming out of the exhaust. It used to only do it once in awhile and thought it was just normal cause i only noticed it after i removed my catalytic converter. I has been doing it more though and it is causing concern for me cause im trying to sell it right now and i dont want it to be smoking. If anyone has any ideas as to what this could be please post. I need to get this fixed. I have searched but alot of the smoking problems were white smoke, not blue/black smoke. Thanks in advance, if you post. Derek __________________

10-10-2005, 09:51 PM	#3
Yoshi Post Whore! Join Date: Jul 2001 Location: Washington Age: 48 Posts: 3,003 Trader Rating: (1) Rides Gallery: Yoshi Feedback Score: 1 reviews	what does the smoke smell like? blue = oil... not good. __________________ www.360realms.com/S13-S15

10-10-2005, 10:43 PM	#4
drifter808 Zilvia Addict Join Date: Aug 2005 Location: Big Island Age: 36 Posts: 829 Trader Rating: (4) Rides Gallery: drifter808 Feedback Score: 4 reviews	Yeah it smells like its burning oil. Its a stock turbo running 10-11 psi. I did a compression test and was around 150 across the cylinders. If it is a headgsket i do have a spare apexi one i can put in as a last resort. any more ideas. The smoke is more on the black side though with a hint of blue smoke. If its something i can tune with an SAFC,good, cause i have one. __________________

10-10-2005, 10:51 PM	#6
Var Post Whore! Join Date: Sep 2003 Location: Norcal Age: 43 Posts: 5,032 Trader Rating: (0) Rides Gallery: Var Feedback Score: 0 reviews	If the compression test was recent i would blame the turbo. __________________ Hi

10-10-2005, 11:18 PM	#7
drifter808 Zilvia Addict Join Date: Aug 2005 Location: Big Island Age: 36 Posts: 829 Trader Rating: (4) Rides Gallery: drifter808 Feedback Score: 4 reviews	well i did the compression test today. I dont have a feeling it is the rings cause on my last SR my oil consumption was terrible then i blew a piston. This new SR has no oil consumption at all. My bet is the turbo. It still pulls hard and all but on my other engine when i recieved it the turbo was running 17psi for about a month( i didn't know,no boost gauge and had to break it in properly. Well that is the turbo that i am running now cause the one on the new engine was seized. If you understand that. It wouldn't surprise me if it was the turbo. But i want to be certain it is before i get another one. any other advice as to what it could be. __________________

10-10-2005, 09:51 PM	#2
Neejay Post Whore! Join Date: Jan 2004 Location: lol Age: 39 Posts: 2,586 Trader Rating: (2) Rides Gallery: Neejay Feedback Score: 2 reviews	"when im done driving it and the turbo timer is running, some smoke is coming out of the exhaust" Is it a stock turbo? I think Ive heard that the exhaust smokes if the turbo is/is going bad (assuming its not something internal within the engine). Someone correct me if Im wrong.

10-10-2005, 10:48 PM	#5
Irukandji Post Whore! Join Date: Jul 2004 Location: Compton Posts: 4,268 Trader Rating: (0) Feedback Score: 0 reviews	if you blew a headgasket the smoke coming out of the exhaust should be more whiteish. If you have blue smoke its probably burning oil.. which means your piston rings are probably crap. Check your oil level frequently if you want to verify this. But this is all speculation, you still havent given us substantial information. If piston rings are bad, the compression is usually a little lower. I know sr's usually have 160 across all four.

10-11-2005, 01:04 PM	#8
240meowth Nissanaholic! Join Date: Dec 2001 Location: torrance, ca Age: 41 Posts: 2,407 Trader Rating: (4) Feedback Score: 4 reviews	blue smoke=oil black smoke=rich white smoke=lean that's all i know about smokes __________________

10-11-2005, 03:49 PM	#9
CarloSR Leaky Injector Join Date: Jul 2005 Location: Dominican Republic Posts: 84 Trader Rating: (0) Feedback Score: 0 reviews	Do a compression check. I would have told you right away that's the turbo but in idle if it keeps smoking seems that you have a ring or piston with problems. Good luck man.

10-11-2005, 06:38 PM	#11
WILDACEX187 Post Whore! Join Date: Jan 2003 Location: QUEENZ, NYC Age: 42 Posts: 3,103 Trader Rating: (4) Feedback Score: 4 reviews	could it be valve guide seals or something like that? i know they cause smoking in ka's __________________ SR POWA COUPE LUVVV!!!

10-11-2005, 09:11 PM	#12
drifter808 Zilvia Addict Join Date: Aug 2005 Location: Big Island Age: 36 Posts: 829 Trader Rating: (4) Rides Gallery: drifter808 Feedback Score: 4 reviews	Any more ideas. I still think that it is the turbo. Im gonna go ahead and try and find a s15 t28 and bolt it on. If my problem isn't fixed, i have another spare SR with all new pistons, rings and apexi headgasket. So i'll just part it out and rebuild this one. Screw selling it, with the new turbo its mine. Im not gonna let some one else have all the fun. If there are anymore ideas please let me know. Derek __________________

10-11-2005, 11:18 PM	#13
ledzeppelin240 Zilvia Addict Join Date: Sep 2003 Location: Sinse Posts: 688 Trader Rating: (0) Feedback Score: 0 reviews	Could be PCV valve, clogged oil control ring, top compression ring bad, the turbo, worn valve guides, or bad valve guide seals (which would make any engine smoke while it idles or on startup). White smoke would be coolant... __________________ Anyway, no drug, not even alcohol, causes the fundamental ills of society. If we're looking for the source of our troubles, we shouldn't test people for drugs, we should test them for stupidity, ignorance, greed and love of power. Looking for: JDM S13 OEM Sideskirts

10-12-2005, 12:13 AM	#14
drifter808 Zilvia Addict Join Date: Aug 2005 Location: Big Island Age: 36 Posts: 829 Trader Rating: (4) Rides Gallery: drifter808 Feedback Score: 4 reviews	Well the car doesn't smoke when i first start it up. It seems like only i have been running the car in boost then park it and let the turbo timer run that i notice the smoke. I cant tell if my turbo is smoking when im driving because i cant really look behind when going fast on these crappy ass hawaii roads. The engine still runs strong but im gonna do a couple more tests anyways just to be certain. Hopefully i dont have to rebuild the whole engine. I can do it i just dont prefer to do it mainly cause this is my daily driver and cant have a long down time. __________________

11-28-2005, 11:37 PM	#15
drifter808 Zilvia Addict Join Date: Aug 2005 Location: Big Island Age: 36 Posts: 829 Trader Rating: (4) Rides Gallery: drifter808 Feedback Score: 4 reviews	Well its been hard times for money but i finally replaced it with another stocker and the car is a whole new beast. It seems alot faster then what it was before. The old turbo when i pulled it out had alot of shaft play. So glad that it is finally running good. Thanks for all the help __________________