smoke from exhaust

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25-02-2013, 08:22 AM
hanzyo

smoke from exhaust

hi guys,

just wondering if anyone has expereinced a bit of smoke coming from their exhaust when flooring it a bit. ive actually had this for quite a while now and really didnt take notice of it. after having a read through the forums it appears as most people have smoking issues when idling. is this something i should be worried about, should I have this checked out by mazda?

cheers
25-02-2013, 08:27 AM
SarcasticOne

Re: smoke from exhaust

Black is fine
White is bad

Sent from my Galaxy Nexus using Tapatalk 2
25-02-2013, 08:37 AM
hanzyo

hmm im pretty sure its white when i see it in the rear view.

ive had this for probably well over 3 years now. never took notice of it really due to my lack of understanding about cars etc... if ive had it for that long now should something have blown or be damaged by now?
25-02-2013, 10:42 AM
chef

MPS run quite rich and smoke under hard acceleration but if its smoking at idle most likely turbo seals
25-02-2013, 06:57 PM
Jmac

its been covered before but the smoking you found clearly says its at idle.

Smoke under WOT (Wide Open Throttle) is unburnt fuel. Turbos run rich, especially these things.
Do it at night with a car behind you and watch them disappear.

This is what we mean at idle;
smoking turbo.mpg - YouTube

and for anyone else reading, no - we dont mean on a cold morning, thats condensation.
01-03-2013, 11:58 AM
hanzyo

Thanks for the info guys!
01-03-2013, 12:12 PM
dazza

Quote:

Originally Posted by Jmac

its been covered before but the smoking you found clearly says its at idle.

Smoke under WOT (Wide Open Throttle) is unburnt fuel. Turbos run rich, especially these things.
Do it at night with a car behind you and watch them disappear.

This is what we mean at idle;
smoking turbo.mpg - YouTube

and for anyone else reading, no - we dont mean on a cold morning, thats condensation.

Condensation - YouTube
01-03-2013, 12:33 PM
hanzyo

LOL thanks Dazza!
06-05-2013, 08:53 PM
Seba

Has anyone been able to minimise the WOT black smoke and if so how?

Replace fuel injectors? O2 sensor? PCV valve? How do I lean this bad boy out?!?
06-05-2013, 09:55 PM
Jmac

Quote:

Originally Posted by Seba

Has anyone been able to minimise the WOT black smoke and if so how?

Replace fuel injectors? O2 sensor? PCV valve? How do I lean this bad boy out?!?

Even with a tune it does not reduce to any noticeable amount.. There are worse things to worry about.. Like leaning out and blowing something.

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06-05-2013, 10:09 PM
DAN MPS 3

I like to use it as a 007 gadget. Smoke Screen my enemy!!
07-05-2013, 07:59 AM
auscer

Hahaha @KFuNk his car is the king of smoke out of the exhaust. Well till he does his bt build

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07-05-2013, 08:30 AM
SarcasticOne

I'll have to get video of mine one day...
07-05-2013, 09:58 AM
chef

My AFR are lean and I still smoke heaps
07-05-2013, 03:01 PM
rogwick

I have (once and only once) completely blackened an intersection to the point I could not see any cars behind me for about 5 seconds. Massive backfire (BOV venting).

My guess is that's the result of daily driving. I hadn't opened up for a while prior to then. Felt sorry for the cars behind.

Every other time it's just normal puffs of black smoke, which is fairly typical of the MPS or many turbo cars.

White or blue smoke is more of a concern, especially at idle.

http://www.youtube.com/watch?v=ixAMwN11cfQ
07-05-2013, 03:03 PM
LRRH

Quote:

Originally Posted by DAN MPS 3

I like to use it as a 007 gadget. Smoke Screen my enemy!!

Yes great for those muppets who like to tail-gate you :D
07-05-2013, 03:08 PM
dazza

Quote:

Originally Posted by rogwick

I have (once and only once) completely blackened an intersection to the point I could not see any cars behind me for about 5 seconds. Massive backfire (BOV venting).

My guess is that's the result of daily driving. I hadn't opened up for a while prior to then. Felt sorry for the cars behind.

Every other time it's just normal puffs of black smoke, which is fairly typical of the MPS or many turbo cars.

White or blue smoke is more of a concern, especially at idle.

http://www.youtube.com/watch?v=ixAMwN11cfQ

rofl thats possibly one of the funniest things ive watched in a while
07-05-2013, 03:25 PM
rogwick

Quote:

Originally Posted by dazza

rofl thats possibly one of the funniest things ive watched in a while

Haha, glad you liked it! There's a few similar videos on youtube, where they get about 30 cyclists over a distance of around 1km up-hill with smoke
25-07-2013, 01:57 PM
Jmac

Stickied
16-11-2013, 08:17 AM
KostaMPS

Quote:

Originally Posted by rogwick

I have (once and only once) completely blackened an intersection to the point I could not see any cars behind me for about 5 seconds. Massive backfire (BOV venting).

My guess is that's the result of daily driving. I hadn't opened up for a while prior to then. Felt sorry for the cars behind.

Every other time it's just normal puffs of black smoke, which is fairly typical of the MPS or many turbo cars.

White or blue smoke is more of a concern, especially at idle.

http://www.youtube.com/watch?v=ixAMwN11cfQ

Lol I love this video even tho Ive seen it heaps of times before.. It'll never get old!
Btw I just found out from my girlfriend that when I give it black smoke comes out of the exhaust!
Might adjust my BOV as I think I here a little bit of a back fire..

2008 Mazda MPS SPORT - Turbosmart Dual Port BOV