Jump to content
SAU Community

Black Smoke

Justin78

By Justin78,
in General Maintenance

 Share

Recommended Posts

Justin78 Rookie

Justin78

Posted
Posted (edited)

When i accelarate and then de- accelarate black smoke pours out of the exhaust. It has not done this before.I have just installed a k&n air filter and had the timming belt replaced, would this have anything to do with it ?

Also

Does anyone know what the oil pressure should be at idle and when running

Edited by Justin78
Link to comment
https://www.sau.com.au/forums/topic/93086-black-smoke/
Share on other sites
ToF Experienced

ToF

Posted
Posted (edited)

Black smoke generally means it's running rich which is good I guess.

It could be running richer now possibly because the timing was adjusted when the timing belt was changed or the AFM was tampered with when the air filter was installed.

A little black smoke while pushing it is normal for most jap cars as their ECUs were tuned to run slightly rich. So I don't think there's anything for you to worry about. :)

Edited by ToF
Link to comment
https://www.sau.com.au/forums/topic/93086-black-smoke/#findComment-1680024
Share on other sites
Justin78 Rookie

Justin78

Posted
  • Author
Posted (edited)
Black smoke generally means it's running rich which is good I guess.

It could be running richer now possibly because the timing was adjusted when the timing belt was changed or the AFM was tampered with when the air filter was installed.

A little black smoke while pushing it is normal for most jap cars as their ECUs were tuned to run slightly rich. So I don't think there's anything for you to worry about. :angry:

Cheers mate

Is there anyway of leaning it up slightly.

I dont have any surging so i guess it cant be to rich ( i dont know), there sure is a fair bit of black smoke when the blow off valve releases

Edited by Justin78
Link to comment
https://www.sau.com.au/forums/topic/93086-black-smoke/#findComment-1680326
Share on other sites
Links Veteran

Links

Posted
Posted

Black smoke usually shouldn't be coming out unless your really punting it hard or maybe just when you back off the throttle and it's dumping excess fuel into the system..

is it diong it while you are idling - or mainly pushing hard..

Best way to check A/F ratios is put the thing on a dyno.. also get a conzult cable from someone and check that your O2 sensor is working correctly and that it isn't just defaulting to running rich..

Doesn't sound like there is too much of an issue, might just need to be cleaned up a bit.. also maybe change your fuel?

Link to comment
https://www.sau.com.au/forums/topic/93086-black-smoke/#findComment-1680461
Share on other sites
Justin78 Rookie

Justin78

Posted
  • Author
Posted
Black smoke usually shouldn't be coming out unless your really punting it hard or maybe just when you back off the throttle and it's dumping excess fuel into the system..

is it diong it while you are idling - or mainly pushing hard..

Best way to check A/F ratios is put the thing on a dyno.. also get a conzult cable from someone and check that your O2 sensor is working correctly and that it isn't just defaulting to running rich..

Doesn't sound like there is too much of an issue, might just need to be cleaned up a bit.. also maybe change your fuel?

I started it up this morning drove it down the road and it just stalled and would not boost.

I ended up taking it to the workshop put it on the dyno and still the same problem not boosting, no power, and black smoke, after all this it ended up being that the cat converter had sh*t itself and was blocked stoping all airflow

Thanks for your help

Link to comment
https://www.sau.com.au/forums/topic/93086-black-smoke/#findComment-1681850
Share on other sites
Justin78 Rookie

Justin78

Posted
  • Author
Posted
If its running rich can it screw the cat up fairly quickly or does this happen over time

What spark plugs did you put in and what gap where they set at.

Im also getting alot of backfiring since the cat change does anyone know why it would do this or does this lead to it being rich again.

Link to comment
https://www.sau.com.au/forums/topic/93086-black-smoke/#findComment-1691462
Share on other sites
Nathan_G1 Proficient

Nathan_G1

Posted
Posted

My skylines running hell rich under full boost, cant remember the exact air/fuel ratio but it was hell high, they told me to get a Power FC or something similar so they could lean the mixture a little, under full boost and the richness made 179rwkw with VG30, got told the PFC would get me to 200+ no worries. Cars generally backfire after high revs during a down shift or going off acceleration, shouldnt be too much to worry about

Link to comment
https://www.sau.com.au/forums/topic/93086-black-smoke/#findComment-1691934
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • wizlb
      Who has a Infiniti Q60, Q50 (V37)?

      By wizlb · Posted

      Per Mark Roberts of Sonictune: Mark Robert Author At this time, no. No ETA either 2016-17 models. You will be able to purchase and install a 2018.5+ TCU though   TCU purchasing and pricing info! As we near the release of TCU tuning, I am going to answer some questions I get asked often.   What do I need for TCU tuning? At this time, you will need a 2018.5+ TCU to be able to tune. If you have a 2016-to early 2018, you will need to replace your TCU with the newer version. One good way to know if your TCU is good is if you have auto upshift in manual mode in 1st gear around 6500 rpms. If your manual 1st gear goes to 7k rpm and will hit the rev limiter unless you shift, you have the older TCU.   Why do I need to buy another ecu license/phone flash if I already have it on my ECU tune? The TCU is its own computer module. It is completely separate from the ECU. Because of this, you will be required to purchase a TCU license and, if your tuner has it, the phone flash license required to tune it via phone/bluetooth.   Do I need TCU tuning? TCU tuning is NOT required. However, the faster your setup, the more it will assist in track and dragy time consistency.   If I’m ECU tuned by (tuner A) can I get my TCU tuned by (Tuner ? Yes, since it’s a different module and a completely separate flash, you can have two different tuners. However, it is highly recommend that you have both tuned by the same tuner. For me, my TCU tuning will directly complement my ECU tuning style and features and running my ECU and another TCU or vice versa MIGHT cause some issues. At this time and for the foreseeable future, I will only be tuning my current ECU tuned customers TCUs.     I have a SYVECS AWD controller. Do I still need it? Yes! The AWD controllers main job is to control your AWD system. However, with TCU tuning, you will no longer need the auto-shift function as that will be done through the TCU. The AWD controller will still be very beneficial for racers looking to maximize traction on the launch.     Shift schedule changes: holding gears longer at lower pedal input as well as max shift rpm changes. Please note, the new ECU race rom coming out will address 90% of the shitty drivability issues these cars have through custom maps from myself and Racebox—as well as others I am sure.   Increase shift speeds: as seen in the videos I’ve been posting, the TCU shifts much faster once tuned.   Increased shift pressures: as also seen in the videos, much firmer full throttle shifts.      
    • wizlb
      Who has a Infiniti Q60, Q50 (V37)?

      By wizlb · Posted

      Per Mark Roberts of Sonictune:     Mark Robert Author At this time, no. No ETA either 2016-17 models. You will be able to purchase and install a 2018.5+ TCU though   TCU purchasing and pricing info! As we near the release of TCU tuning, I am going to answer some questions I get asked often.   What do I need for TCU tuning? At this time, you will need a 2018.5+ TCU to be able to tune. If you have a 2016-to early 2018, you will need to replace your TCU with the newer version. One good way to know if your TCU is good is if you have auto upshift in manual mode in 1st gear around 6500 rpms. If your manual 1st gear goes to 7k rpm and will hit the rev limiter unless you shift, you have the older TCU.   Why do I need to buy another ecu license/phone flash if I already have it on my ECU tune? The TCU is its own computer module. It is completely separate from the ECU. Because of this, you will be required to purchase a TCU license and, if your tuner has it, the phone flash license required to tune it via phone/bluetooth.   Do I need TCU tuning? TCU tuning is NOT required. However, the faster your setup, the more it will assist in track and dragy time consistency.   If I’m ECU tuned by (tuner A) can I get my TCU tuned by (Tuner ? Yes, since it’s a different module and a completely separate flash, you can have two different tuners. However, it is highly recommend that you have both tuned by the same tuner. For me, my TCU tuning will directly complement my ECU tuning style and features and running my ECU and another TCU or vice versa MIGHT cause some issues. At this time and for the foreseeable future, I will only be tuning my current ECU tuned customers TCUs.     I have a SYVECS AWD controller. Do I still need it? Yes! The AWD controllers main job is to control your AWD system. However, with TCU tuning, you will no longer need the auto-shift function as that will be done through the TCU. The AWD controller will still be very beneficial for racers looking to maximize traction on the launch.     Shift schedule changes: holding gears longer at lower pedal input as well as max shift rpm changes. Please note, the new ECU race rom coming out will address 90% of the shitty drivability issues these cars have through custom maps from myself and Racebox—as well as others I am sure.   Increase shift speeds: as seen in the videos I’ve been posting, the TCU shifts much faster once tuned.   Increased shift pressures: as also seen in the videos, much firmer full throttle shifts.      
    • The Bogan
      NC MX5

      By The Bogan · Posted

      The fancy pants red shock tower brace is finally incoming from MX5 Mania, getting it shipped from 'Merica has been a long and problematic process, and GWR, the 'Merican supplier will not ship directly to consumers outside of the US, Mania basically had to order a heap of them, the colour choice was silver, or red, and we all know anything red adds 5 killerwasps of dynotorques..... Whilst it does fit over a 2.5, and I've seen a few photos and videos of it being installed and fitting, google also says it might get real close to the FAB9 intake front runner, people in the US says it does fit with the FAB9 intake, except for one person who said it slightly touched.......so there is that.....LOL..... As it seems that I am the first in AU to have this combination of parts there's no local knowledge about fitment, so I'm just a willing guinea pig in this endeavour, I'll cross my fingers and toes and hope for the best In other news, I ordered stuff from China  on the same day I ordered the 23° silicone bend from Victoria, the stuff from China arrived a day ago, the 23° silicone bend is still travelling around Australia thanks to Australia Post, and "may" be here next week
    • Duncan
      Who has a Infiniti Q60, Q50 (V37)?

      By Duncan · Posted

      Very good news...I contacted Racebox about it last night. My car is a 2016 so remains to be seen if it is compatible, requires a TCU swap, or is impossible.
    • MBS206
      Unpeeling the Orange

      By MBS206 · Posted

      What ECU are you running? This is probably the biggest question. If it's a PowerFC, I'd probably change the ECU and get something newer that will handle the injectors in a nicer way.
×
×
  • Create New...