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Carbon buildup?

J

Jeremy1976

Ready to race!
Location
Wisconsin
I have a 2009 Passat 2.0T APR stage 1. I recently had it in to replace a faulty injector. While they had it apart they noticed massive amounts of carbon buildup on the valves. They did the chemical treatment and cleaned them up. Unfortunately my extended warranty did not cover it. The car had 66,000 miles on at the time.

Any problems with carbon build up on the Golf R's? I always run premium 93 octane in the Passat. At $1000 to do the cleanup on the valves, I am hoping this is not a regular thing that needs to be done.

Thanks
 
jwilkins88

jwilkins88

Ready to race!
Location
St. Louis, MO
On my Mazdaspeed, I'd run some seafoam through it every time I did an oil change, and that kept my valves nice and clean. Smokes like a son of a bitch though.
 
PRND[S]

PRND[S]

The Lame & The Ludicrous
Location
Southern California
Car(s)
'15 LSG Golf R
The R shouldn't have that problem, it has both Direct Injection and Multi Port Injection. The latter washes the intake valves with fuel, which contains detergents and additives to prevent carbon buildup.
 
T

TheSwede

Ready to race!
Location
Sweden, Halmstad
Car(s)
Golf7 Alltrack/Cupra
FYI - I have opened the bonnet and under the engine fairing you can see the physical ”Port injection” on my R. Other models as GTI also have it in EU countries. From what I know the R is only manufactured in Germany so far, also for US/CA market :).

/Peter
 
RjRacing

RjRacing

Go Kart Champion
Location
Philly
PRND[S] said:
The R shouldn't have that problem, it has both Direct Injection and Multi Port Injection. The latter washes the intake valves with fuel, which contains detergents and additives to prevent carbon buildup.
Click to expand...

^ This. Funny thing is that its design is made for swirling effect in the combustion chamber to allow for better emissions, but it absolutely cleans the carbon too. A shame US spec GTI's don't have this.
 
J

Jeremy1976

Ready to race!
Location
Wisconsin
Very glad to hear. I just had my 2009 Passat 2.0T in for faulty injector replacement and the valves were covered in carbon. Less than 65,000 miles. Not covered under warranty to have the chemical cleaning process done.... Something I do not want to do every 60,000...
 
PLF8593

PLF8593

Drag Race Newbie
Location
Philly
Car(s)
19 Alltrack 6MT
Jeremy1976 said:
Very glad to hear. I just had my 2009 Passat 2.0T in for faulty injector replacement and the valves were covered in carbon. Less than 65,000 miles. Not covered under warranty to have the chemical cleaning process done.... Something I do not want to do every 60,000...
Click to expand...

Unfortunately, it IS something you'll need to do every 60k. Direct Injection engines have these problems. I'm at 43k on my 2012 mk6 GTI and I'm not looking forward to getting that stuff done either.
 
Boosted_2.0

Boosted_2.0

Ready to race!
Location
Texas
PRND[S] said:
The R shouldn't have that problem, it has both Direct Injection and Multi Port Injection. The latter washes the intake valves with fuel, which contains detergents and additives to prevent carbon buildup.
Click to expand...

It was confirmed by Mark that it does not have Multi-Port Injection and they are removing that from the site.
 
SpeedieGTI

SpeedieGTI

Go Kart Champion
Location
Kansas
GolfWang said:
Unfortunately, it IS something you'll need to do every 60k. Direct Injection engines have these problems. I'm at 43k on my 2012 mk6 GTI and I'm not looking forward to getting that stuff done either.
Click to expand...
My mk6 at 75k miles was showing no symptoms of carbon of build up.
 
J

Jeremy1976

Ready to race!
Location
Wisconsin
The first thing the dealer asked me was if I ever run anything other than 93 octane. I never have and run a Stage 1 APR tune in my Passat. The carbon buildup on it was ridiculous he said like I was running less than 93. I could tell the performance was less than before but at the time was more concerned about the missing that was due to the faulty injector.

Since it has been cleaned up the performance once again is amazing! This is not something I want to do every 60,000 miles. Especially with the extended warranty not covering it. Direct injection might look good on paper but....
 
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