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Valve stem oil seals, Superb 2.0 Tsi

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Interested to know if a 125,000 mile Superb 2,0 TSI (2011) can be considered an end of life vehicle . I had a spark plug disintegrate a few months ago . It was heavily carbonised so my first move was to have the injector replaced. However, the spark plug still showed contamination. It was then determined that the valve stem oil seals for that cylinder were faulty. In addition, a replacement turbo actuator was required. DSG oil service also due. My question is whether such failures (including recent water pump replacement) have been experienced by other members at this level of mileage/age of vehicle

There were some issues with the EA888 series engines, do you know your engine code? I'm guessing you have a late Gen 2 engine.

What did a compression test show?

Edited by Warrior193
added information

How much lube oil does your engine consume?

  • Author

A full engineering inspection was carried out which verified normal cylinder compression,no issues with piston rings and no damage to cylinder walls or pistons. The definitive diagnosis was the valve stem oil seals for No 3 cylinder. There has been high oil consumption with this engine.Hopefully things will improve once the required work has been carried out .

How long had the spark plug that failed been fitted to the engine?

17 hours ago, Outfoxed said:

A full engineering inspection was carried out which verified normal cylinder compression,no issues with piston rings and no damage to cylinder walls or pistons. The definitive diagnosis was the valve stem oil seals for No 3 cylinder. There has been high oil consumption with this engine.Hopefully things will improve once the required work has been carried out .

Oil consumption with an EA888 is 99% of the times a problem with the piston rings. This is usually fixed by overhauling the engine (new pistons + piston rings).
How can you be so sure that your engine does not suffer from issues with the piston rings?
Has your engine already been overhauled in the past? In that case they forgot something, because normally they also replace the valve stem seals during the overhaul...

OP did post that a 'full engineering inspection' was done and compressions were 'normal' - I'd be a little surprised for that to be the case on a 125K mile, 24 year old engine - especially a G2 EA888!

Me too. But the compression of my 1.8 TSI was also still normal when it was burning oil. I don't think that a compression test is the right way to test the condition of the oil-scrape rings (the lower of the three piston rings).

Edited by andrehj

  • Author

Too long!Major main dealer screw up. I did extract all the debris from the cylinder and it was confirmed no damage done . We think the faulty injector did not help…

I would add that I am fully confident that this is a reputable engineering company with the ability to diagnose and repair major engine faults. My original post was whether a 2011 Superb can be considered an end of life vehicle given the number of faults it has picked up

9 minutes ago, andrehj said:

Me too. But the compression of my 1.8 TSI was also still normal when it was burning oil. I don't think that a compression test is the right way to test the condition of the oil-scrape rings (the lower of the three piston rings).

I agree with that analysis but the cost of that degree of strip down and parts replacement would definitely take it beyond the value of the vehicle.

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