I have a question I am hoping someone might be able to shine some light on.

I have a 2011 Justa that has just hit 10K miles ever since I got it it seems to build up soot at the exhaust tip quit fast as I clean it every time I was the car.

Gas mileage for me is running between 35-42 MPG and I have a 140 mile commute five days a week.
Oile usage seems to be non existent and the first change was done @ 7540 miles on the clock.

Is this something normal? My guess is the motor runs rich and to some degree I would expect that on the S or the JCW but not the base.

Thank you all for your help

 

This is normal. Both N12 and N14 motors run a little rich.

 

+1

 

+2

 

Yep mine does this too. I normally take some Brasso and a rag to it. Comes right off.

 

wow! That's quite the commute. I had a similar commute about 10 years ago. Now I have a much shorter approx 15 mile commute which ironically, because of traffic, takes me almost as long as the 140 mile commute I used to have.

Anyway, I think that's normal. I have about 4700 miles on mine and the exhaust tip is always getting dirty.

And I envy your gas mileage!! With my stop n go commute, I'm barely managing about 24 mpg right now.

 

Yup. Normal. My favorite is "Never-Dull"
My personal favorite product. Ever since I never dulled it once. It just comes right off at the car wash. And I have an S

 

Mine too, 2011 justa manual, collects soot at the exhaust tip. 2500 miles on the clock. Been that way since I got it.

 

if you wear Vans their rubber sole takes it off nicely =P

 

Normal is the punch line, whether on my S or my other vehicles with bright tipped exhaust. Stick a carbon based fuel in one end and even after you clean up all the exhaust via good smog control and tight fuel regulation and a bunch of it is now CO2 and H20, no surprise that you still end up with some basic...carbon. And I say that completely independent of any oil burning (or not).

 

Have you seen the AFR of a stock N14 MCS?.......

Rich is not how I'd describe it at all.

 

Hmmm my stage 1 FMIC Alta map just runs slightly rich

 

Yuppp, I have a 2008 justa manual and mine is always sooty. Even within a few days after a wash, it's sooty again! ..Good thing I wash weekly :P

 

+1
http://eagleone.com/pages/products/p...sp?itemid=1006
Started using it every night on the new clubman. Takes only a couple of minutes.

...and I need to update my sig

 

I have a negative emotional reaction to Nevr-Dull after using it to clean what must have been several square miles of brass during Boot Camp and Officer Candidate School, but I have to admit it's a great polish, and works a treat on the tailpipe ends!

 

Been using this stuff on my chrome since I was 16 and now I'm 53.Glass wax is also super good stuff but hard to find and all the good chrome platers usually ship there chrome with a coat of that on it