Decarbonising rings

[Flash635]

2005 Touareg R5 TDI.

I've got some blowby smoke, rebuilding the turbo didn't reduce it as much as hoped.
I want to decarbonise the oil rings, does anyone have a suggestion as to what the best product would be.

One thing I'm a bit nervous about is the Nikasil bore lining.

It's done 295,000 kms and there's no sludge or varnish in the oil.

 

[Trav]

This TDI engine uses plasma coated cylinders not Nikasil. How much oil is it burning?

 

[jetman]

4 + yrs ago I purchased a used vehicle that had stuck rings on all cylinders (defective pvc design). I fixed the pvc problem and did a piston/combustion chamber soak for 48 hrs with Gunk brand "Motor Medic",

Since then, consumption has decreased from 1/2 or more qts per 1000 miles to 1/2 qt per 5k miles.

 

[OVERKILL]

Are you in Canada or Europe?

 

[Flash635]

This TDI engine uses plasma coated cylinders not Nikasil. How much oil is it burning?

About .5 litre in 3500km. It's smokes a fair bit from the oil filler and dip stick.

 

[Flash635]

4 + yrs ago I purchased a used vehicle that had stuck rings on all cylinders (defective pvc design). I fixed the pvc problem and did a piston/combustion chamber soak for 48 hrs with Gunk brand "Motor Medic",

Since then, consumption has decreased from 1/2 or more qts per 1000 miles to 1/2 qt per 5k miles.

I have to take the a/c pump out soon and I thought I could take the inlet manifold off and inject the cylinders with some xylene.

 

[Flash635]

Are you in Canada or Europe?

Australia.

 

[OVERKILL]

Australia.

Plot twist! OK, lol.

Many of the products that would be recommended like @High Performance Lubricants don't have a distribution channel in Oz unfortunately. What oils have you been using?

 

[jetman]

Australia.

Mobil1

 

[Trav]

About .5 litre in 3500km. It's smokes a fair bit from the oil filler and dip stick.

I wouldn't worry about that for a second, it is not enough to start messing with.

 

[Trav]

4 + yrs ago I purchased a used vehicle that had stuck rings on all cylinders (defective pvc design). I fixed the pvc problem and did a piston/combustion chamber soak for 48 hrs with Gunk brand "Motor Medic",

Since then, consumption has decreased from 1/2 or more qts per 1000 miles to 1/2 qt per 5k miles.

Start a new thread, you are confusing this one answering questions meant for the OP.

 

[incognito_2u]

2005 Touareg R5 TDI.

I've got some blowby smoke, rebuilding the turbo didn't reduce it as much as hoped.
I want to decarbonise the oil rings, does anyone have a suggestion as to what the best product would be.

One thing I'm a bit nervous about is the Nikasil bore lining.

It's done 295,000 kms and there's no sludge or varnish in the oil.

I’ve had success with “Kreen” from Kano labs……don’t know if they have a Distributor in Oz.

 

[michaelluscher]

I used a combination of Piston Soaks with penetrating oil and solvent, HPL engine cleaner, Yamalube RingFree, short OCIs, and oils that are suspected of cleaning better

Your mileage may vary

 

[CleanSump]

Start a new thread, you are confusing this one answering questions meant for the OP.

No. @jetman gave a solution that worked for him. That's an answer to the OP's q.

 

[adams355]

Flush it with liqui moly engine detox run a short interval and do it again. You can get it from Supercheap or Autobarn. You dont need to do piston soaks and what not.

 

[minis]

some people i know have used automatic transmission oil in the cylinder and let it soak, it will not fix it the first time
it will take a few tries

what ever you try please report back your results after each try

 

[demarpaint]

some people i know have used automatic transmission oil in the cylinder and let it soak, it will not fix it the first time
it will take a few tries

what ever you try please report back your results after each try

ATF is far from a good cleaner engine cleaner, that method carried over from old time mechanics from several decades ago. There are much better choices for piston soaks and cleaning up an engine. ATF would be my last choice.

 

[Jetronic]

AN/ester containing engine oil, or if you want faster results acetone soak followed by an oil change to AN/ester containing oil.

Though ester oil can have pretty good results fairly quick aswell

 

[Arc]

ATF is far from a good cleaner engine cleaner, that method carried over from old time mechanics from several decades ago. There are much better choices for piston soaks and cleaning up an engine. ATF would be my last choice.

Thats what I thought about ATF until I tried it on a small motor and saw how good it worked. After that I started hot soaking all my vehicles at least once a year and also running it in the fuel. I had a head gasket blow on my jeep at about 275k miles and heads, pistons etc were clean as could be after all those years of running a quart per tank full of gas each fill up. I will look for some pics on my old phone.

 

[demarpaint]

Thats what I thought about ATF until I tried it on a small motor and saw how good it worked. After that I started hot soaking all my vehicles at least once a year and also running it in the fuel. I had a head gasket blow on my jeep at about 275k miles and heads, pistons etc were clean as could be after all those years of running a quart per tank full of gas each fill up. I will look for some pics on my old phone.

Search the forum, ATF as a engine cleaner has been beaten to death. FTR our resident industry experts chimed in, there are much, much better choices.