Black soot

[Yaks1974]

I never said the car doesn't produce black smoke when you gun it, it does. All I said is that after 70k the exhaust tips are clean as and the boxer still has not chewed an ounce of oil.

[nomadx38]

Oh granted cars have become very efficient compared to the older days and more or less completely burn the fuel to create very few emissions, but every car will still create soot (whether by revving it hard or just by design) and to say you don't have any carbon what so ever in your exahust after 70,000km is a bit bs - especially when were talking about a WRX motor that chuffs like a steam engine

[Yaks1974]

No BS dude, the chrome tips are clean as, if I wipe my finger inside the pipe I get very,very little carbon. Looking at the inside of the pipe you can make out the colour of the metal with no carbon residue. The GTI on the other hand can get a layer of black carbon inside the pipe and on the tips if driven in D mode after a day, much less in M mode. I'm happy to provide pics if u still insist I'm BSing. I will say this though it is driven very sedately by the wife as the primary driver it is only ever given a bit of stick by me on the rare occasion that I get to drive it, if that makes a difference.

[car_nut]

Oh granted cars have become very efficient compared to the older days and more or less completely burn the fuel to create very few emissions, but every car will still create soot (whether by revving it hard or just by design) and to say you don't have any carbon what so ever in your exahust after 70,000km is a bit bs - especially when were talking about a WRX motor that chuffs like a steam engine

Agree and thank you for all your comments. I checked the exhaust pipe of my wife's newish and incredibly efficient Honda Jazz VTI-s and it is quite sooty.

[noone]

I think its silly to say all cars do it, I've watched 69 AMG's take off crazily quick and smokeless, I have never seen much on the boot of my car that isn't dust (they do dust up quickly) and the old-skool 1.8T in the old Polo GTI is from the 90's (in its original flavour). Putting down a bit more kw and torque (happy to be challenged on that) than the 6R, so possibly an issue or design (to do with the twin-charger design, tiny engine or DSG)

Yes, you run a richer mixture at higher revs to protect the engine, but then you are getting away from the best performance from the Stoichiometric ratio, so its not the best for the environment or performance.

When I hear about a 6R GTI burning through oil there seems to be a number of fixes, so I'd assume one of those will help.

[Zakarados]

Heavy sooting/oil chunks on the hatch on the Polo GTi is not normal. After having my engine rebuilt, there is no soot at all. 1500km in and no chunks to be seen. I am also getting no oil consumption so I assume they are related.

[tj9630]

I did a clean and after a week it turns to this! around 800kms clocked up so far...



you can see where i wiped alot of soot with the finger...




I read that for one person it has slowly resolved so thats what im hoping for, not much oil use, still near the top after 1000kms