Even the mighty Porsche DI succumbs to deposits

Messages
1,877
Location
Pacnw
Great find! We need to do more to make people aware of this issue in any DI engine that has these problems. Rl_RS4 you are leading the way! Great work! Haven't read all that site yet but the "use higher rpms" makes a lot of sense to me as a preventative measure. I have always believed that "lugging" an engine is bad for numerous reasons. The porsche flat 6, for example, loves to rev. and it seems to me that the garage queens that are taken out every once and a while to put around don't hold up as well as those that are redlined occasionally (after warming up of course). In the 2.0 FSI world the heavier and slower EOS has had the most problems from what I have seen in terms of deposits. The average person buying that car is less likely to rev. it up IMO. Just an impression, no hard data to back that impression up. Also the DSG transmission, if left in "d" mode, is a short shift master. It's programming in "d" is designed to sip fuel. This may be contributing to the problem also. Note that in 's' mode it is the opposite, it shifts past the redline and lives in the upper rpm range.
 
Messages
14,013
Location
Retired | Wausau, WI
I would think before anyone could give an opinion we would need to know a few things about this vehicle. 1. What were the driving conditions? 2. Is this Porsche maintained per Porsche recommendations? 3. What type of fuel was used and were there any additives used?
 
Messages
1,877
Location
Pacnw
My opinion is that those valves look very similar to other DI engines with the exact same problem. f.e. a 2.0 FSI with 80k: Disgust!
 
Last edited:

RI_RS4

Thread starter
Messages
1,175
Location
Rhode Island
Unfortunately, I don't know. It's passing around the porsche/vw forums like wildfire, but I cannot find the original postings.
 
Messages
47,536
Location
Duvall WA - Pacific NW USA
 Originally Posted By: Johnny
I would think before anyone could give an opinion we would need to know a few things about this vehicle. 1. What were the driving conditions? 2. Is this Porsche maintained per Porsche recommendations? 3. What type of fuel was used and were there any additives used?
And 4. What oil?
 
Messages
1,877
Location
Pacnw
Soak it with seafoam or other solvent and mechanical removal has been the most commonly used "complete" clean up method I have seen. Cleaning via seafoam/other solvent as and "induction treatment" or sucked in via vacuum is what I have seen (and have done) as a more minor type of cleaning. DIY here http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=1383285&fpart=1 Best actual solution to me is to get rid of the PCV gunk coming into the intake completely. This is exactly what VW says would be a solution in their patent for the engine. For example via a pcv bypass such as this: http://www.bobistheoilguy.com/forums/ubb...475#Post1463475
 
Last edited:
Messages
11,828
Location
PA
 Originally Posted By: Johnny
I would think before anyone could give an opinion we would need to know a few things about this vehicle. 1. What were the driving conditions? 2. Is this Porsche maintained per Porsche recommendations? 3. What type of fuel was used and were there any additives used?
 Originally Posted By: Pablo
And 4. What oil?
+1 In for more.
 

RI_RS4

Thread starter
Messages
1,175
Location
Rhode Island
 Originally Posted By: Art_Vandelay
How do they clean that up?
Pull the intake manifold soak in solvent blast with a walnut shell blaster Clean the rest by hand Takes about 1 hour per cylinder.
 
Messages
1,714
Location
CA.
 Originally Posted By: RI_RS4
 Originally Posted By: Art_Vandelay
How do they clean that up?
Pull the intake manifold soak in solvent blast with a walnut shell blaster Clean the rest by hand Takes about 1 hour per cylinder.
After all of that they have to figure out how to stop that mess from coming back. AD
 

RI_RS4

Thread starter
Messages
1,175
Location
Rhode Island
 Originally Posted By: Pablo
And 4. What oil?
Given it's a porsche, it's most like one of the "superior" Porsche Approved oils.
 
Messages
6,987
Location
Michigan
The article states a few things to help: 1. Drive using higher rpm's 2. do not overfill the oil 3. Use quality gas 4. Avoid alot of idling I would use a high quality Syn oil also
 
Last edited:
Messages
1,339
Location
USA
Thanks guys. Wow I'm glad I have a Lincoln. The pictures at 2000 miles, after having been cleaned, are incredible. What a headache to maintain.
 
Messages
1,714
Location
CA.
I would love to see if adding MMO or TCW3 to the gas would help slow that process down. If it were my ride I'd certainly give it a try. AD
 
Top