Hey folks, so hoping this is just a vacuum hose, my mates VAG reader had errors - lean bank(?) 1, boost pressure low, air leak...

Not quite sure which hose to look at, any pointers and other items worth checking while I have things apart?

Just to add, I use to hear the wastegate reflected off close objects but have not heard it for a while now, assume this will be down to the same fault?

Cheers.

Edited 13 July, 20223 yr by Ollyk

Is this a tfsi, a vrs?

 

A full scan with codes would be useful. Preferably vcds or obdeleven. 

 

As a guess  and as a starting position, check all boost piping from turbo to intercooler and intercooler to throttle body. Especially connectors and joins. 

 

A faulty diverter valve is another strong contender. 

I had no idea this engine had a diverter valve, can it be blanked?

I use to notice the wastegate noise reflected of hedges and walls when driving but have not heard it in a long time now...

If I grab a piccy with the airbox off can you point me to all the bits?

Sadly cash strapped so I cannot afford a proper scan... 

2 hours ago, Ollyk said:

I had no idea this engine had a diverter valve, can it be blanked?

I use to notice the wastegate noise reflected of hedges and walls when driving but have not heard it in a long time now...

If I grab a piccy with the airbox off can you point me to all the bits?

Sadly cash strapped so I cannot afford a proper scan... 

What is your first 3 or 4 alphabetic characters of your engine number? CCZA, BWA?

 

No it can not be blanked it will damage the turbo.  They're not that pricey though an aftermarket pierburg unit probably £40 ish, if you order online, depending on your exact engine. A genuine on from a skoda garage probably £70 ish.

 

See this video gives a pretty good view of it in the engine bay and with an engine removed. One of the bolts is tricky though as it is pretty confined. Again, depends a bit on you confirming engine. It is no where near the airbox. It is on the turbo.

 

 

 

 

 

 

That's brilliant thanks. It is the BWA engine for sure. haha I have stripped my old 406 engine and that was a b!tch! I did the cam belt a few weeks ago too and that was a doddle so sure I'll be ok...

So I assume the inlet manifold will get ****ted up from exhaust products? The one on my 406 was proper choked up but that was a diesel to be fair. Had to chisel the **** out!

I'll check the video out thank you.

And sorry it is from a VRS. I thought FSI was enough. Didn't they merge FSI and TSI to form the duel fueling TFSI engine? Maybe I got that wrong...

1 hour ago, Ollyk said:

That's brilliant thanks. It is the BWA engine for sure. haha I have stripped my old 406 engine and that was a b!tch! I did the cam belt a few weeks ago too and that was a doddle so sure I'll be ok...

So I assume the inlet manifold will get ****ted up from exhaust products? The one on my 406 was proper choked up but that was a diesel to be fair. Had to chisel the **** out!

I'll check the video out thank you.

You'll be fine with one difficult bolt then, there are three in total.

 

If your saving ££ check pipes first and you could remove the diverter and inspect the diaphragm. It is likely to be torn if faulty.

 

On the later ccza engine yes, intake valves and ports are a problem from 60k miles due to direct injection. No fuel through the intake valves to clean.

 

The earlier bwa I think is still direct injecton yes? It probably does suffer then but I haven't seen as much complaining about it but if DI it will. The manifold is usually not too bad. It's the Intake ports, separators and intake valves all in the head that are usually the problem.  

Edited 15 July, 20223 yr by TheClient

To be honest I am completely confused with what engines are what lol... According to wiki Skoda have dropped stratified injection a while ago, but I thought TFSI engines were the best of both worlds, homogines(sp?) and stratified... According to wiki the BWA is a TFSI, but as I said earlier it is labelled FSI, so to be honest I haven't got a clue what system it uses to inject lol! It would be nice to know though... Anyway, I will have a look at the car Thursday, as I am working through until then.

1 hour ago, Ollyk said:

To be honest I am completely confused with what engines are what lol... According to wiki Skoda have dropped stratified injection a while ago, but I thought TFSI engines were the best of both worlds, homogines(sp?) and stratified... According to wiki the BWA is a TFSI, but as I said earlier it is labelled FSI, so to be honest I haven't got a clue what system it uses to inject lol! It would be nice to know though... Anyway, I will have a look at the car Thursday, as I am working through until then.

Its all marketing gobblugook. But Tfsi and tsi are turbo direct injection  turbo. Everything else is fluff. So a true FSI non turbo charged..  

TFSI = Turbo Fuel Stratified Injection

TSI = turbocharged stratified injection

FSI = Fuel Stratified Injection

 

TFSI and TSI mean exactly the same thing. And FSI is injected, but no turbo charger.

 

TFSI and TSI are marketing terms and have been mixed and matched by AUdi, VW, Skoda Seat over the years as they feel like creating something "new" to talk about!!