Carbon Deposit on rear bumper?

[dannychapman10]

Hey everyone,

I'm seriously starting to question whether my car is actually a diesel? haha
But seriously, I cleaned the car on Sunday and it's now Tuesday, we have had heavy rain so the car is generally dirty, but I'm more concerned about these, what look to be, carbon deposits from the exhaust that surround the lower bumper and number plate?

The car is totally standard, the exhaust takes about 2 hours to get covered in black crap after cleaning but that's how it's always been.
The car was in at Seat at the other week as I'm stilling having this jerkiness and the found nothing wrong, you guys got any ideas?
Injectors possibly?

Cheers,
Dan

 

[/dev/null]

Looks like tar spots to me.

 

[dannychapman10]

I thought this at first, but tar spots stick whereas these just rub off leaving a black stain on my finger, and surely if it was tar, it'd be on the other side aswell?

 

[cila555]

I Think that is normal on Petrol engine cars 2.0 TFSi. Which type of engine do you have ?
Put photos with your exhaust. My exhaust is a little bit out and I have black "soot" on rear bumper, too.

 

[AndrewJB]

Seems to be common with the Petrol's


The 1.6 Petrol engines used by SUNRED in the WTCC Last season puffed more black smoke than the 2.0TDI engines used by SEAT Sport

 

[markmeus]

Seems to be common with the Petrol's


The 1.6 Petrol engines used by SUNRED in the WTCC Last season puffed more black smoke than the 2.0TDI engines used by SEAT Sport

The CR engines are even cleaner, I never see smoke come out the back of mine.

 

[AndrewJB]

The CR engines are even cleaner, I never see smoke come out the back of mine.

SEAT Sport used CR engines in WTCC, But the 1.6T Petrol engines really puffed black smoke badly

But it seems to be a common thing on here for Petrols to have this black stuff on boot

 

[Faceless]

I thought this at first, but tar spots stick whereas these just rub off leaving a black stain on my finger, and surely if it was tar, it'd be on the other side aswell?

......still sounds like tar spots to me. .....

 

[jh1]

here;s an old link same issue

http://www.seatcupra.net/forums/showthread.php?t=320948

It does seem to be common.

cold exhaust / warm exhaust / condensation / splatter

accelerate - wet sooty deposits out of exhaust and onto bumper......

I can watch the condensation plume (through the rear view mirror) swirl around the back of the car rear window - more when first starting car up / driving off

- aerodynamics / body- exhaust - dont know of a way out of it.
read somewhere that deposits seem to be worse / heaviest if you go a little too heavy on the accelerator not too long after engine's up to temperature, seems to be a good spot...

thought about moving exhaust tip in (nah would,nt look right)

thought about moving exhaust tip out ( nah would'nt look right)

in out in out squirt it all about -

 

[ddc]

Well my 1.6 CR is just as bad for crap on the rear! Even just run down the street after a clean shows up soot and dust, add some rain and it looks a right mess!

Got to say the arse of a MK2 Leon is a dirt magnet get used to cleaning it!

 

[FR_Kris]

Totally normal, when I boot the R it looks like a diesel when it comes on boost. You wanna see the amount of black spots on the back of my car lol and when I accelerate the back window steams up until I ease off

 

[n0ble]

You should see my stage2 cupra with R exhaust on it if you think that's bad. The car of the car gets 3x more dirty and quicker than my de-DPF car.....

Glad to see other people having this, thought I had something wrong

Sent from my Desire HD using Tapatalk

 

[Lee M]

Mines the same. Exhaust gets dirty quickly after a clean and I have black spots that come off pretty easily when cleaned.

Always put it down to general road dirt and what gets thrown out of the exhaust. As i understand it the tfsi engine runs a little rich which I've always presumed to be the source of my black deposits.

Cheers


Sent from my iPhone using Tapatalk

 

[Davemm]

Mine does exactly the same, from a clean exhaust to dirty in less 5 miles of driving. Have just put up with it and it washes off easily so no harm done.

 

[cila555]

2.0 TFSi Cupra R , exhaust twins Milltek ...