[Crasher]

When was the fuel filter last changed?

 

[Crasher]

The interval of the filter change is not a problem, it is whether the system is correctly bled after the change

 

[Crasher]

That sounds to me like the fuel lines on the tank delivery unit for the low pressure lift pump are the wrong way around, yes they run like this but badly and don't fill the canister.

This is the correct way for MQB, if they are correct you need to check the LPFP is working.

 

[Crasher]

I blow the entire system through with brake cleaner and compressed air, VAG says you must replace every part of the high pressure system, which is ludicrous. When the system is back together I run the pump with VCDS with the feed to the HPFP off and run a good amount of Diesel through, I won't put £2500 worth of new VDO injectors on until I am 100% satisfied the system is clear. I have seen seven year old Golf's go to the breakers over the cost of this and scrapping a car of that age does nothing to reduce global Co2 emissions.

 

[Crasher]

VCDS is an acronym for VAG COM Diagnostic System. It used to be called VAG-COM with VAG standing for Volkswagen AktienGesellschaft (not Volkswagen Audi Group as most people think) and COM being obvious but VW North America got all up their arses about trademarks and they had to rename it.

 

[Crasher]

Failure of the HPFP in this manner should have a cause such as misfueling with petrol or incorrect procedure after fuel filter replacement. If this is a VW main dealer they have already failed to adhere to the technical Product Information notice on this problem which states "replace the entire high pressure fuel system" so you would have been in a better position initially to decide what to do. Could you message me the reg or post the VIN?

 

[Crasher]

Hi Crasher. I've stated a conversation with you as didn't want to post reg on here. Hope this was the right thing to do!

Yes, spot on, that is what I was alluding to, you could post the VIN as that is not GDPR data. Yes the genuine exchange pump 04B 130 755 HX is on back order partly due to huge demand but a lot of parts genuine or aftermarket go onto back order at the moment.

Your car is on the digital service system and the last recorded service by a dealer or registered specialist was on 2019-03-07 at 38171 miles by White Rose Petersfield and that was just a basic service, what is the current mileage?

 

[Crasher]

What is the current situation with the car?

 

[Crasher]

They are waiting our decision about whether we want to go ahead with the fuel injectors replacement. I don't think we have a choice now but to go ahead as HPFP etc already been replaced but really unhappy - had we known at the beginning the total cost we're not sure we would have gone ahead as car probably not worth it. Any advice on how to talk with them? We want to try and find out why HPFP failed and why there are no VW HPFPs available - if there has been a high demand there surely this is a manufacturing issue and we shouldn't have to pay. Should it have been a product recall?

From what I have been able to find out it is demand, it would not be an out of warranty recall (or Campaign as VAG like it to be known, they don't like the R word) as it is not emissions or safety related and the big gap in the online service data rules out any "goodwill" contribution. Why they fail? Difficult to say if a new filter has not been fitted or the vehicle miss fuelled but the HPFP has basically eaten its internals and spat the swarf out into the system. As they have kindly (it is unusual) fitted what I assume will be a Delphi exchange pump part number HRP719 I wonder if they would consider using Delhi exchange injectors, their part number HRD365 as this could save you around £500.

It is quite frustrating though that VW have changed from a Bosch system that was prone to this over to a Delphi system that is showing signs of being even worse. Personally I feel small diesels are a bad idea, the have become far too costly to build and maintain due to the stringent emissions regulations that manufacturers are struggling to achieve; it explains why car manufacturers are rushing over to electric, emissions testing is one of the worst aspects for them when designing new cars, remove that problem and you save billions of Euros' in one go... car manufacturers don't care what the car is powered by, they just want to turn the metal out the door and NEXT!.

 

[Crasher]

Reasonable result.

 

[Crasher]

They are aluminium fillings or swarf, sparkle dust!



I spotted one developing the problem during the biannual service last week and it is in Monday for pump, belt and flush before it contaminates the injectors.

£2.5k is too cheap even using a Bosch exchange pump and new VDO injectors so something is wrong with that estimate and sets my alarm bells ringing.

 

[Crasher]

That is the CAYC engine, an utter disaster but one caused by ridiculous CO2 targets which are now so bad they are killing off the internal combustion engine, intentionally...

 

[Crasher]

Possibly, the injectors are key to this engines operation.

 

[Crasher]

That is a disaster, in VW dealer repair terms a write off. What is the VIN?

 

[Crasher]

Hi Crasher,

I changed my filter today.
VW service manager said to the top of the filter fine.

Now i replaced and cleaned out the case.
What u said for me about this?
Need check the tank as well?

old filter changed 16k miles ago, in 11/23 major service.

WVGZZZ5NZJW869926

Im the owner from 97k

thanks
Tom

View attachment 15967
View attachment 15966
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In that final picture it looks like there are some signs of sparkle dust.

 

[Crasher]

But the VW service manager said no problem with this. normal

Third photo show same on bottom of filter house

https://drive.google.com/file/d/1kVMQyrKu6Ru2RL8rd_FZM7mTJaFcVCCH

Metallic particles on top of the filter can only come from inside the pump and are not normal, if I identify even one particle I advise the customer to have the pump replaced at around £2k rather than the pump and injectors at around £4.5k when the pump eviscerates its internals, dumping them into the injectors and rendering them useless.