Diesel Forum Forum for Diesel engine vehicle related discussion
Sponsored by:
Sponsored by:

How to decarb piston rings

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Mar 30, 2021 | 01:54 PM
  #1  
E350cruiser's Avatar
Thread Starter
Junior Member
5 Year Member
 
Joined: Apr 2017
Posts: 40
Likes: 4
2011 E350 blutec
How to decarb piston rings

Hello and how are you all doing. Having some time on my hands, have a new question. If my engine is sucking oil through the PCV , then wouldnt that attribute to coking or buildup of carbon in the piston rings? Seems that my oil consumption is up on my W212 om642. I installed another crankcase vent valve (pcv) the diaphragm in the old one was questionable.
Reason Im asking is that as the rings or should i say the ring grooves are getting exposed to more oil, then wouldnt there be more of a carbon deposit behind the rings ,perhaps making them stick? What would you use to 1, add to the fuel to help decarbonize the piston ring grooves, and 2, add to the crankcase to clean excessive dirt, carbon or whatever out of that ? As i get i higher oil consumption through the pcv , if it gets bad enough could i end up getting a runaway where even shutting the engine off it could end up running on its own oil? ( as what has happened with the older larger heavy diesel engines)
I was thinking of adding seafoam to both my crankcase and fuel tank for this purpose. I am currently using Liquimoly diesel intake cleaner right before an oil change. The oil in the intake is crazy bad, it has to be negatively effecting the piston ring area of the engine. If the rings are getting coked up from the top and not the bottom then more pressure is getting into the crankcase, causing more gasses through the pcv.
What have you all used to prevent this ? Sea Foam? Liquimoly diesel purge ? Lucas oil stabilizer or fuel injector cleaner?
Thanks for your input, E350cruiser
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 06:28 AM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE