Jump to content
SAU Community

Black Smoke?

RBert
 Share

Recommended Posts

RBert Enthusiast

RBert

Posted
Posted

short story.

r32 gts

stock rb20

no cat

dad watched me drive away from the house the other day and when i got home he said there was some black smoke

coming from the exhaust (didnt say how much, but he was like.."you been reving the guts out of it? and i was like umm no more than usual. i usually drive pretty casually reving to no more than 4k..with the occasional 1 gear limiter to 2nd.

anywho he told me to get a compression test and check the oil so on.

basically before i go get a mechanic to tell me theres something wrong for the sake of it.

could the black smoke just be because i have no catalytic converter?

the car seems to be driving fine, as of late i think either the spark plugs or the coil pack needs to be changed as every now and then as i have some boost hesitation.

any help much appreciated

Link to comment
https://www.sau.com.au/forums/topic/404288-black-smoke/
Share on other sites
Spurdo Experienced

Spurdo

Posted
Posted

yeah a little black smoke quite often doesnt mean much at all. unless it really was spewing it out with vigour i wouldn't worry about it. keep in mind the car is ~20 yrs old so its no spring chicken and sometimes it will show its age in more ways than one.

when the smoke is blue thats when you should start getting concerned.

Link to comment
https://www.sau.com.au/forums/topic/404288-black-smoke/#findComment-6434866
Share on other sites
StevenCJR31 Veteran

StevenCJR31

Posted
Posted

short story.

r32 gts

stock rb20

no cat

dad watched me drive away from the house the other day and when i got home he said there was some black smoke

coming from the exhaust (didnt say how much, but he was like.."you been reving the guts out of it? and i was like umm no more than usual. i usually drive pretty casually reving to no more than 4k..with the occasional 1 gear limiter to 2nd.

anywho he told me to get a compression test and check the oil so on.

basically before i go get a mechanic to tell me theres something wrong for the sake of it.

could the black smoke just be because i have no catalytic converter?

the car seems to be driving fine, as of late i think either the spark plugs or the coil pack needs to be changed as every now and then as i have some boost hesitation.

any help much appreciated

was the engine cold when you left the driveway? if so the smoke may be due to the engine running rich having been on the ecu cold start program

Link to comment
https://www.sau.com.au/forums/topic/404288-black-smoke/#findComment-6435036
Share on other sites
RBert Enthusiast

RBert

Posted
  • Author
Posted

yeh it would of been cold been cool in perth last few mornings and no i dont have an atmo bov, its blocked off hehe

cheers for you're help guys, i didnt think it was anything to dramatic and i plan on doing some big engine changes in the near future so should be fixed

when i do that.

thanks once again.

ps: if the engine explodes in the next week or so ill be sure to let you know :P

Link to comment
https://www.sau.com.au/forums/topic/404288-black-smoke/#findComment-6435757
Share on other sites
StevenCJR31 Veteran

StevenCJR31

Posted
Posted

yeh it would of been cold been cool in perth last few mornings and no i dont have an atmo bov, its blocked off hehe

cheers for you're help guys, i didnt think it was anything to dramatic and i plan on doing some big engine changes in the near future so should be fixed

when i do that.

thanks once again.

ps: if the engine explodes in the next week or so ill be sure to let you know :P

yeah she has been cold lately! ice on the car windscreen on a few mornings

Link to comment
https://www.sau.com.au/forums/topic/404288-black-smoke/#findComment-6436547
Share on other sites
iplen Mentor

iplen

Posted
Posted

The amount of fuel smoke my stagea used to blow could have powered a Prius.. Gtr is not much better at times either, fuel smoke, esspecially when the engine is cold (ie first 5-10 mins if it is -10 or 40) is not a bad thing. Safer for the engine to be rich than lean.

Link to comment
https://www.sau.com.au/forums/topic/404288-black-smoke/#findComment-6436583
Share on other sites
Hadouken Grand Master

Hadouken

Posted
Posted

The amount of fuel smoke my stagea used to blow could have powered a Prius.. Gtr is not much better at times either, fuel smoke, esspecially when the engine is cold (ie first 5-10 mins if it is -10 or 40) is not a bad thing. Safer for the engine to be rich than lean.

Damn straight! Id rather have my car be puff the magic dragon thab lean out!

Link to comment
https://www.sau.com.au/forums/topic/404288-black-smoke/#findComment-6436696
Share on other sites
*LOACH* Veteran

*LOACH*

Posted
Posted (edited)

Damn straight! Id rather have my car be puff the magic dragon thab lean out!

True, but also keep in mind that a rich running engine will have less power and will use more fuel than if it has a correct A/F ratio.

Edited by *LOACH*
Link to comment
https://www.sau.com.au/forums/topic/404288-black-smoke/#findComment-6437715
Share on other sites
gotRICE? Veteran

gotRICE?

Posted
Posted
. Safer for the engine to be rich than lean.

Depends on just how rich though.

I had mine detonate to buggery when the O2 sensor on the dyno was faulty. Was reading almost 2AFR out. Detonation when running rich looks scary from the exhaust end.

Figured this out when we maxxed out 555cc Nismo injectors on an RB25 running 17psi with a GT30. lol.

Link to comment
https://www.sau.com.au/forums/topic/404288-black-smoke/#findComment-6441419
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

    • Kinkstaah
      WTB R34 GTR Guard Liners

      By Kinkstaah · Posted

      Ah! I actually managed to snag a lightly used set.... that aren't so suitable for me right now. They don't work on a GTT without some cutting or creative heat moulding. I thought about reselling them myself cause I didn't want to murder them, but it looks like I'm probably going to attempt to murder them/melt them because I may as well. @GTSBoy @PranK can somebody close this thread?
    • itsmeyo
      WTB R34 GTR Guard Liners

      By itsmeyo · Posted

      Hey mate,  I have a set, one is slightly damaged but wont be noticable once installed.  Shoot me a message if your still after them 
    • The Bogan
      NC MX5

      By The Bogan · Posted

      I couldn't wait But, the black constant tension hose clamps were too thick and there wasn't enough clearance at the T/B and I couldn't get it to seat properly, so I had use a silver one there I also added some 3" silicone over the alloy bit that goes through to hole on the radiator support as it looked like it was sitting on the edge of the hole in the radiator support, I never noticed a rattle or anything, but there was a witness mark It is basicly done, and I can live with the silver hose clamp at the T/B, I will get a black clamp for the head vent though where it is attached to the bulkhead fitting  It never stops...LOL, only issue now with the shock tower brace is it slightly touches the under bonnet liner now, if I leave it it will either wear some paint off the brace where it touches, or damage the liner, so I removed the liner to see what I have to work with, with the liner removed I have about 20mm of clearance, but sadly the middle part of the underside of the bonnet is only dusted with paint and looks crap, so I cannot have that, but.... as I have a roll of Carbuilders premium under bonnet insulation in the garage laying around that is only 5.5mm thick (we were going to use it on the boys Patrol, but he crashed the front of it a few months and it was written off, hence why he now drives my old Honda Accord Euro), I'll use the OEM liner as a template and get the Carbuilders stuff fitted up to cover that dusted paint up
    • Kinkstaah
      From Japan and back to Europe, my sh*tbox R34 GTT

      By Kinkstaah · Posted

      You have a knack for photography my friend. It makes the 86 look like a complete bucket. The 34 went with you to Europe and back. It's special. (we all feel the same about our 'shitboxes' that every bystander seems to absolutely love)
    • Dose Pipe Sutututu
      From Japan and back to Europe, my sh*tbox R34 GTT

      By Dose Pipe Sutututu · Posted

      LOL.... you are correct there.
×
×
  • Create New...