Black Spots on Tailgate

[LukePolo]

Guys, my car is starting to look like a dalmation, washed it Friday, did 200km and now it looks like this.



Trivett VW reckon it's dirt. Yeah right, it smears like nutella.
It gets worse as the week goes on.

Any ideas?

[prcurrie]

It's soot. Standard with the GTI. Theres a couple of threads on here to have a read through

[LukePolo]

It's soot. Standard with the GTI. Theres a couple of threads on here to have a read through

That's all well and dandy.. But i have a 77tsi.

If they are gunna give me the soot of a gti, might as well give me a gti!

[MrDeathLad]

yeah, standard on the gti but from his pic he has a TSI. mine does it too. PITA to clean but not chewing oil so im not worried.... unless someone tells me i should be?

[Barracuda]

Very odd! I've got a TSI and this has never happened!

[LukePolo]

Very odd! I've got a TSI and this has never happened!

Can I ask what fuel you use and where from?

[TSI_Dan]

Can I ask what fuel you use and where from?

Its never happened to mine either. As for fuel its always 98 and usually comes from Shell or Caltex.

[Tdijimmy]

My diesel polo has it too! Kind of gets hidden with the car being blue...

Someone suggested it being tar from roadworks etc?

-------

On the topic of fuel : Go shell, more like go to hell! Shell fuels are rubbish, in particular diesel. I get an extra 150km per tank from mobil or BP diesel.

[nomadx38]

Hmm interesting its on a 77TSI...

First off how many KM have you done?

Any oil consumption issues?

And lastly how long are your trips (average) and how do you drive it - baby it, or actually drive it?

I personally haven't had any problems with mine but the again i drive about 2 hours each day which really warms the exhaust up and blows all the excess carbon out.

If you only do short trips chances are it's just excess carbon - which goes to my next point that if you are babying it, it won't clear out the carbon

Hopefully it's just that and not oil consumption related

Also I find on hot days I get more carbon buildup on the exhaust tip (a black tip after 2 weeks in summer where as I can go through the whole winter clean) this is because the engine runs slightly richer to prevent knocking - idle is slightly up as well (varies from 650 to 800rpm (600 normal)

[LukePolo]

Hmm interesting its on a 77TSI...

First off how many KM have you done?

Any oil consumption issues?

And lastly how long are your trips (average) and how do you drive it - baby it, or actually drive it?

I personally haven't had any problems with mine but the again i drive about 2 hours each day which really warms the exhaust up and blows all the excess carbon out.

If you only do short trips chances are it's just excess carbon - which goes to my next point that if you are babying it, it won't clear out the carbon

Hopefully it's just that and not oil consumption related

Also I find on hot days I get more carbon buildup on the exhaust tip (a black tip after 2 weeks in summer where as I can go through the whole winter clean) this is because the engine runs slightly richer to prevent knocking - idle is slightly up as well (varies from 650 to 800rpm (600 normal)

At the moment i've just passed 5500km.

On average, my trips are mostly motorway related and last anywhere from 10 minutes to an hourish. average trip is about 20km. The trips I have done just recently (as per my first post) were long trips and on the highway.

No oil consumption issues, still as full as the day I bought it (2 months ago)

I wouldn't say I baby it, but I wouldn't say I'm a hoon either. I drive "normally" haha.

My Idle is normally around 650 all the time. Hot or cold days, except for cold start which is about 1000rpm.

I like my stainless exhaust tip, but having it go black in a week frustrates me...

[amazeer]

I mostly baby my tsi. 6.5l/100km average over 20,000kms. Last tank was 6.2 and I also use shell or caltex 98 exclusively as I have fuel cards. Never had any soot at any stage of its life.

[Zakarados]

It's soot. Standard with the GTI. Theres a couple of threads on here to have a read through

Hi Guys, don't be fooled by VW telling you that this is normal. I had major sooting like the pictures posted here prior to my engine rebuild (pretty sure i posted this in a different thread). No matter what petrol brand was used, the same sooting happened. I was also burning oil at the rate of 1L/1000km. Once my rebuild was done, there is next to no sooting happening, no oil usage, and I can use any petrol brand. Get it looked at by your local VW, complain, complain, complain.

On a side note did this happen straight after you washed the car? A lot of it might be water that got into the exhaust while you are washing it.

[gavs]

Guys, my car is starting to look like a dalmation, washed it Friday, did 200km and now it looks like this.

[ATTACH=CONFIG]5941[/ATTACH][ATTACH=CONFIG]5942[/ATTACH][ATTACH=CONFIG]5943[/ATTACH]

Trivett VW reckon it's dirt. Yeah right, it smears like nutella.
It gets worse as the week goes on.

Any ideas?

That's oily carbon if it smears like that. I'd be asking for what they supposedly diagnose it as in writing and signed by the service manager and dealer principle, then see if they play ball...

[LukePolo]

That's oily carbon if it smears like that. I'd be asking for what they supposedly diagnose it as in writing and signed by the service manager and dealer principle, then see if they play ball...

I never expected i'd have to kick up a stink owning a VW... I had a Holden previously, that was hell, buying this car was to escape.

Thanks for your informative responses guys.

It's really funny because I have NO other symptoms, no oil burning, no unusual fuel usage, according to 'Road Trip' on my iPhone, I get 6.22lt/100km. 98 fuel from caltex is my only option for 98, shell is an annoyance to drive to..

[MrDeathLad]

I never expected i'd have to kick up a stink owning a VW... I had a Holden previously, that was hell, buying this car was to escape.

Thanks for your informative responses guys.

It's really funny because I have NO other symptoms, no oil burning, no unusual fuel usage, according to 'Road Trip' on my iPhone, I get 6.22lt/100km. 98 fuel from caltex is my only option for 98, shell is an annoyance to drive to..

I'm in the same boat man. I've done 33k km. I don't baby it (mostly in m up to 4-45k rpm) and no oil consumption issues but I do get black spots. Only use 98 from bp.


If its just carbon gavs, and doesn't smear, is this just normal waste from the combustion cycle? Or are there other factors at play?