My son has this model with around 75,000 miles on the clock. The EGR valve was replaced by the previous owner at around 40,000 miles and my son uses Wynns Extreme Diesel cleaner in the tank at 6 monthly intervals.

Whilst driving down the M6 last weekend the 'Glow Plug' warning came on the dashboard. At this point he had been driving for around an hour. This has not happened previously during his ownership. At the same time the car developed a 'juddering and lumpy' motion so as a precaution he pulled over and called out a breakdown service. 

The onward journey involved two separate breakdown vehicles due to the distance. The second breakdown driver advised before setting off that my son again try his vehicle and by which point the glow plug had gone off and he was able to drive the remaining 60 miles of his journey in the car with no issues.

He has now booked a mobile mechanic to carry out a diagnostic check which is due later this week which hopefully will give us a specific cause.

In the meantime, just wondering whether these specific circumstances resonate with any other owners out there.

I have also been in touch with Wynns who confirm that the 6 monthly additive would not have caused the issue but did suggest using the specific EGR aerosol spray direct through the air intake.

Many thanks in advance.

23 minutes ago, hogun pen llyn said:

Wynns Extreme Diesel cleaner

Aka snake oil; enough said?

 

Anyway, a glow plug issue is more likely electrical, in the control box or the temperature sensor. I can say this much but you need diagnostics to go much further.

As your son has already booked a mobile mechanic to visit, probably best you don't cancel.

 

But for future reference, if the car can still drive, there are members with scan tools you might have been able to visit for a quick scan.

https://www.briskoda.net/forums/topic/262215-list-of-vcds-owners-previously-known-as-vag-com-vcp-owners/

 

Best of luck, try to get specific codes if possible from the mechanic that you can report back here if needed.

Ken ONeill - Thanks for the reply.

 

I will update once diagnostics are done.

 

Presumably you are not a great fan of the Wynns product. The product gets mostly positive reviews on the Internet. From your own experience is there a better product out there.

 

Thanks.

Varoom - Thanks for the contribution.

 

We are still going ahead with the diagnostics and will update with any relevant codes once completed.

 

The situation was primarily posted on the off chance that someone else had the same combined glow plug warning and 'juddering engine'  experience 

32 minutes ago, hogun pen llyn said:

Presumably you are not a great fan of the Wynns product.

Nor of any other "engine additive".

Thanks to all who have replied to date.

 

UPDATE FOLLOWING DIAGNOSTICS

 

My son has advised that this revealed a Fault Code P020300 (Injector No. 3 - Injector Circuit)

 

The mechanic advised that given the fact my son had been able to drive an additional 60 miles after the initial Glow Plug warning with no further problems, that the car may have reset itself !!

 

Please forgive me as this has all come third hand via my son.

 

My supplementary question is whether this particular Fault Code is a common issue and what if anything requires immediate action.

 

The same mechanic has provided a quote for the replacement of all four injectors at £1,600 but did in fairness elaborate that his system only allowed for a quote for all four injectors and that the replacement of the one (Injector No.3) would clearly be significantly cheaper.

 

That said will injectors No.s 1, 2 & 4 follow suit in the not too distant future and if so it might be better to bite the bullet and get all 4 done at once.

 

Many thanks.

 

23 minutes ago, hogun pen llyn said:

Thanks to all who have replied to date.

 

UPDATE FOLLOWING DIAGNOSTICS

 

My son has advised that this revealed a Fault Code P020300 (Injector No. 3 - Injector Circuit)

 

The mechanic advised that given the fact my son had been able to drive an additional 60 miles after the initial Glow Plug warning with no further problems, that the car may have reset itself !!

 

Please forgive me as this has all come third hand via my son.

 

My supplementary question is whether this particular Fault Code is a common issue and what if anything requires immediate action.

 

The same mechanic has provided a quote for the replacement of all four injectors at £1,600 but did in fairness elaborate that his system only allowed for a quote for all four injectors and that the replacement of the one (Injector No.3) would clearly be significantly cheaper.

 

That said will injectors No.s 1, 2 & 4 follow suit in the not too distant future and if so it might be better to bite the bullet and get all 4 done at once.

 

Many thanks.

 

@StevesTruck has just replaced all 4 injectors on his 1.6 CR Polo and I think he paid around £250 for a set of overhauled/service exchange ones from Germany 

Presumably a hefty labour bill on top or was it something he did himself?

 

From very brief research it seems a skilled job to change even one injector allowing for all the tolerances etc.

 

Additionally is there a web site  link for this German Refurbished Parts Site?

 

Thanks,

 

 

 

4 minutes ago, hogun pen llyn said:

Presumably a hefty labour bill on top or was it something he did himself?

 

From very brief research it seems a skilled job to change even one injector allowing for all the tolerances etc.

 

Additionally is there a web site  link for this German Refurbished Parts Site?

 

Thanks,

 

 

 

He replaced them himself and I think it was German eBay 

Some two weeks later and after much deliberation, we have now bitten on the bullet and had all four injectors changed for brand new ones along with new seals, stretch bolts etc. Also had the fuel filter changed at the same time. We did consider the re-conditioned option for the injectors but chose otherwise.

The work was carried out by a local specialist garage, where the technician indicated that the failure of these injectors was invariably age more than mileage related - This particular Octavia is now just on 10 years old.

Very expensive, mostly due to the extortionate cost of the injectors but at least some peace of mind for a few years to come.

A VERY major issue across the VAG range with the CAYB/C engine, Euro Car Parts have 8699 new VDO units in stock (last time I looked it was nearly 10000), that is over £5m of injectors at retail prices sitting in stock just in the UK. The later versions from Delphi and Bosch they have only handfuls in stock.

Edited 25 August, 20223 yr by Crasher

Crasher - Agreed.

By all accounts these engines were fitted with Siemens Piezo injectors and the chap who sorted out the Octavia for us said he's changing these injectors are a worryingly, regular basis.

The most common 'patient' on the ward is the VW Caddy Van (1.6 CR TDI).