hi

   i have a 2019 octavia1.6tdi engine code DGTE. 

   it has engine oil coming out the exhaust and smoking vast quantities of grey smoke when it heats up. 

  i fitted a second hand turbo and it was the same

 i checked the compressions they were low so i fitted new rings checked the valves and guides which were ok its still the same.

i fitted a brand new turbo and its still the same.

does anyone know if these heads are prone to cracking.

 

   cheerts eddy

1 minute ago, eddyt said:

does anyone know if these heads are prone to cracking

No idea. Still, I'm wondering more about worn piston rings and/or valve stem oil seals.

2 hours ago, KenONeill said:

No idea. Still, I'm wondering more about worn piston rings and/or valve stem oil seals.

i fitted new rings valve stems and seals were ok

After fitting the rings have you checked the pressure again? Fitting new rings won’t do much if the cylinder tube is worn 

There was no wear on the bores. I honed the bores with a carborundum tool.

The compressions were back up to 400psi.

Not something silly like residual oil in the exhaust?

 

How many miles have you driven after replacing all the bits?

 

Or is it pouring out?

There are a few  known  case's of cracked heads leading to water loss over time. I hope you haven't got a crack into an oil way. 

Any reports of cracked heads with 1.6TDI,s on this forum where there are rather a lot of members with these engines in various models for over a decade now? 

1 hour ago, RoddersUK said:

Not something silly like residual oil in the exhaust?

 

How many miles have you driven after replacing all the bits?

 

Or is it pouring out?

its dripping like a tap

14 minutes ago, Cap44 said:

There are a few  known  case's of cracked heads leading to water loss over time. I hope you haven't got a crack into an oil way. 

im thinking it a cracked oil gallery. uve ordered a replacement head now.

@eddytHow many miles has this engine done and how long have you owned it?

You have spent a fair amount on parts already without any success.

3 hours ago, eddyt said:

its dripping like a tap

Post a video

On 30/03/2023 at 19:03, toot said:

@eddytHow many miles has this engine done and how long have you owned it?

You have spent a fair amount on parts already without any success.

its i done 176000 mile ive only had it 7 month  its working as a taxi.

22 hours ago, ords said:

Post a video

i cant ive dismantled it again

hi 

  i have been dismantling this engine again when i took the oil drain pipe off i looked in the hole on the block it was clear. 

  i put a pipe in the hole and blew through with my mouth and there was a bit of resistance so i blew it through with a air line

  it cleared oil out through the hole for the feed in to the turbo. when i blew through with my mouth there was still resistance.

 does anyone know if there should be resistance or should it be totally free.

 

         cheers eddy

If its the drain pipe from the turbo to the sump it must be clear of any obstruction. I have to say no experience of Skoda/ Vw turbos but all ive worked have a free flow back to the sump after lubricating the turbo bearings

What size diameter is it? Must be around the size of a straw.

Perhaps do a comparison between the two.