Hi, I have recently purchased a 2010 Octavia vrs 2.0T and have noticed that when putting my foot down in third the turbo kicks in but quickly seems to turn off as if it runs out of power . I find it strange as my last car a Audi A4 1.8T didn’t do this. Also a friend of mine has suggested having the sump and pick up pipe removed and cleaned due to them being susceptible of clogging up. The car has 48000 miles with full Skoda service history. Is this a good idea?

Edited 7 August, 20187 yr by sykums

On ‎07‎/‎08‎/‎2018 at 11:34, sykums said:

Hi, I have recently purchased a 2010 Octavia vrs 2.0T and have noticed that when putting my foot down in third the turbo kicks in but quickly seems to turn off as if it runs out of power . I find it strange as my last car a Audi A4 1.8T didn’t do this. Also a friend of mine has suggested having the sump and pick up pipe removed and cleaned due to them being susceptible of clogging up. The car has 48000 miles with full Skoda service history. Is this a good idea?

 

Today I have noticed that when first driving the car when it has sat for a number of hours the turbo works fine but after driving the car for say 5 minutes it doesn't seem to kick in the same

Did an experiment this morning because when first switching on the car the turbo will kick in a few times then doesn’t, so today I pulled over after noticing turbo not kicking in and turned engine off. After about 20 seconds I turned it back on and drove on and the turbo worked again??!!!

Classic sign of the variable vane turbo having a non moving mechanism inside the turbo. 

However, this is normally a problem only in diesel engines, where the mechanism gets covered with carbon and other deposits.

But it can also be caused by a failed actuator and as yours is petrol I would check this first as it is the more likely.

 

The vanes in the low revs position after starting so as you accelerator hard and the vanes don't move, it causes overboost , which in turn causes the ecu to reduce boost by putting the engine into limp home mode.

Turning off the engine for a few seconds and restarting will put the engine back to normal until the next time you accelerate hard. Usually happens when going up steep hills or accelerating hard during an overtake.

 

 

Thanks for the reply, when you say the car will go into limp mode I’m not sure it totally does because I still have a reasonable amount of power just no boost when I had a problem on my Audi it went into limp mode and you knew it was in limp mode because there was a considerable speed reduction. How do I check the actuator?( which I guess is the waste gate actuator?)

3 hours ago, pikpilot said:

Classic sign of the variable vane turbo having a non moving mechanism inside the turbo.

Variable on 2.0TSI ...

 

Could be the diverter valve or cracked seal rim of the wastegate

Edited 9 August, 20187 yr by rayx

Ok would I be able to see possible crack without removing bits? I have also noticed driving it back from work that if I start the car and drive without trying to put my foot down too hard it drives fine and then the turbo will kick in as soon as I try to overtake. And as long as I don’t push it I would be able to get the turbo going again but only probably once more and then that’s it, on the other hand if I floor it straight away the turbo will carry on into 3rd and then literally run out of boost and there is a noticeable reduction in speed. It definitely doesn’t go into limp mode because I can get the car up to a good speed

So was having a little look around engine and trying to feel for any air leaked and found this pipe that looks to be broken off somewhere. Any ideas?