Soot in Exhaust...Normal?
 

Hi everyone,

Ive had the car for just over 3 months and am the second owner with the car currently having 31 thousand kilometers. Now, when ever i go WOT and get out of the car after driving, i look at the exhaust and notice a small amount of black soot in the exhaust. Is this normal? Then if i dont clean it, after a fair bit of spirited driving i find the exhaust having quite a lot of soot inside it. Is this normal?

(Refer to pictures, one is still dirty, the other i have cleaned)

Thanks,
Mason

Unburnt fuel from running rich. Normal.

Seems normal (i hope). All the cars iv owned/scene have jt. Just make sure its not oil. I dont even bother cleaning mine

It's totaled. :D

running rich....will it cause injector problems down the track?

Damn it! I too fit in with every second post on this forum regarding a totaled car

No, the black "soot" you're talking about is just the carbon buildup due the afr being rich. All cars are set up to run a little rich in stock form - rich is "safe" from the manufacturer perspective. It will not cause injector problems every car has this buildup on the tips it's just some of them you can't see it. Also the FA20 uses Direct injection and port fuel injection. i.e. it has 8 injectors. Port injection still works much better for low rpm and idling for emissions & power. If anything were to be effected by soot it would only be the 4 injectors within the cylinders. At WOT at some points I'm pretty sure it uses both and you'll get that carbon on the tips the more frequently when that happens. Just keep cleaning it every month or so, so that it doesn't get caked on.

Awesome! Thank you heaps!

If you're curious to learn more about the port / direct injection modes...you've come to the right forum!

http://www.ft86club.com/forums/showthread.php?t=50827

http://www.ft86club.com/forums/showthread.php?t=3172

Is that the same black soot on the floor?

You can monitor your AFR with Torque to see if you're running the right mixture. It usually runs about 14.5 to 1.

Not under load.

The black "soot" is just unburnt fuel collecting in your exhaust pipes. Definately normal. Would rather have my car running rich rather than lean. Best thing you could do is tune your AFR and get a gauge to monitor your AFR.

Not it's not, it's just some paint stained on the floor from a project.

Normal....look at mine (I deleted the first cat when I did the UEL header). Also notice how the passenger tip is more dirty than the driver.

http://i12.photobucket.com/albums/a2...909D20CF85.jpg

Now I cant wait to go home and check to see if I have a dirty TRD exhaust too. Only issue I saw was when real cold lots of water coming out of exhaust. Damn cat. 3 O2 + 2 CH2 ---> 2 CO2 + 2 H20

What are you guys using to clean the caked on stuff?

Water and microfiber towel... at least that works for me.

Hit the tail pipes with pressurized stream of water then watch it fly away... lol

metal polish and elbow grease.

Totally normal, I get the same thing on my Volkswagen all the time :D

My tips are clean...guess I'm not driving my car hard enough.:(

I just cant get over the fact that someone would clean the tailpipe. I admit that I live in the opposite quadrant of the universe when it comes to washing a car, but seriously, cleaning the tailpipe?

I have a life.

My tips look like I drive a diesel!

http://s.newsweek.com/sites/www.news...-roal-gif2.gif

I'll do it sometimes if I hand wash my car (which is MAYBE once a month during spring/summer, and only if its 28*C or warmer) and I remember to do it. But for the most part, I just usually forget about it because it doesn't bother me at all..

So, is that the new VW pick-up?

Yep. All tests show it well under the permitted emissions.

Yes, doesn't everyone? I use metal polish

I think that it might have something to do with the type of tips that you have. The original OEM ones weren't as noticeable to me as the tips that I replaced them with. Mine are DC Sports EX-1013's and the flat surface area tends to make it more noticeable. They look great when clean, but, I feel like I need to clean them when I do the rest of the car.

Clean tailpipes = very clean car
If those pipes are clean then you know for a fact the rest of the car is meticulously maintained. Every other weekend when I wash my car, I wipe them down and obviously the rest of the car is showroom condition. I even pop the hood and wipe under there down once in a while. I have a busy life too but I take the 30 seconds extra worth of time to wipe those pipes to make the car perfect since I only wash the car every other week.

:iono: at least your "tips" didnt get creampied:cry:
http://www.ft86club.com/forums/showthread.php?t=80328 :D

Just to put it in context, when I say "Opposite Quadrant of the Universe" I mean "I washed a car once, but don't remember when".:iono:

If its clean, its because I just finished restoring it from a pile of scrap and its had its first and last bath. Don't ask me how the two extremes co-exist cause I cant explain it either.:bonk:

Ive got the 86 in Australia, so theyre just the normal stock tips that come standard over here.

Each to their own i guess, But i do enjoy keeping my car in show room condition so cleaning the tips makes it look that much better than having a lot of carbon build up on a perfectly clean car

Tears of a child.





Or dish soap

Maybe for the tailpipe, but dish-soap is bad for car exterior.

Well yeah. Salt from child's tears will eat the clear coat! I only use it on the tail pipe inside.

Do you recommend washing the engine with a high pressure nozzle? Has anyone had any problems doing that?

Use low pressure...

http://www.ft86club.com/forums/showthread.php?t=26551