Help needed. Looking for a fuel pressure regulator for my T6

[The Flying Scotsman]

I’m still getting black smoke at high revs so it’s in the garage that mapped it.
I’m needing to replace the fuel pressure regulator but really struggling to get one.
I can get one from VW at a jaw dropping £380
Anyone know where I can get one for a normal price?
I think the OE code is
04L130764B
Any help most appreciated
Cheers

 

[Kind of Blue]

Would it have been sensible to sort out the black smoke problem or arrive at a definitive conclusion before spending money on a remap?? is it that the fuel regulator is the main fault? I may have missed a thread or post!

 

[The Flying Scotsman]

The map done by the converters was dodgy and might have been the sole cause of the black smoke.
So a remap was where we started.
It’s definitely a fuelling issue so we are eliminating parts at the moment. So I doubt the pressure regulator is the main problem and spending £380 on something that’s unlikely to be the problem is a sore one.

 

[Kind of Blue]

The map done by the converters was dodgy and might have been the sole cause of the black smoke.
So a remap was where we started.
It’s definitely a fuelling issue so we are eliminating parts at the moment. So I doubt the pressure regulator is the main problem and spending £380 on something that’s unlikely to be the problem is a sore one.

If the map done by the converters is dodgy, can that map just be unwritten/cancelled? Then everything should run as normal and one could then consider a remap. Most probably I do not understand the issues relating to programming and that their are 2 problems, one, poor remap and the second, fuel being delivered at too high a pressure and the problems are unrelated ?

 

[The Flying Scotsman]

If the map done by the converters is dodgy, can that map just be unwritten/cancelled? Then everything should run as normal and one could then consider a remap. Most probably I do not understand the issues relating to programming and that their are 2 problems, one, poor remap and the second, fuel being delivered at too high a pressure and the problems are unrelated ?

I’m not sure but expensive finding out

 

[Dundee_Kev]

I'm sure I spyed my old fuel rail kicking around somewhere at my work.

If I find it, you can have it, but there may or may not be tiny bits of metal filings in the regulator. I'll have a look when I get finished up for the day

 

[The Flying Scotsman]

I'm sure I spyed my old fuel rail kicking around somewhere at my work.

If I find it, you can have it, but there may or may not be tiny bits of metal filings in the regulator. I'll have a look when I get finished up for the day

Thanks Kevin.
I’ve managed to source an aftermarket Delphi one from darkside developments for £157 next day delivery.
It’s the correct 04L130764B OE number so I’m hoping it’s going to fit.
My van is up at MAC motorsport who mapped it and Marcin is reluctant to fit second hand parts on it.
He says there’s a problem with the fuel pressure that’s causing the black smoke so has to rule out things.
So far the fuel filter and sensor have been replaced.
Once the regulator is replaced we will hopefully be further forward.
You any ideas mate?

 

[Dellmassive]

Have you tried putting the van back to the OEM standard map and then running it for a month to see what happens?

 

[Dellmassive]

Black smoke out the back is either over fueling or under supply of air ie low boost pressure.

But the DPF should be catching all of the blacks spoot?

The fuel metre in valve governs the fuel rail pressure..... So are the map guys saying that the governing valve has got an issue and causing incorrect injection quantities?

I smell a rat here... I think I would go back to stock OEM and see how the van runs..... We've had reports of black smoke out the back on here and it's normally always related to a third party engine map, normally to be more specific the injector individual codings.

Ask to go back to standard and run it for a month before you spend any money on engine parts.?

 

[The Flying Scotsman]

Have you tried putting the van back to the OEM standard map and then running it for a month to see what happens?

No I took it to a garage who specialises in custom maps after coming to the conclusion that the map wasn’t right.
Turned out they made a right mess of it originally.
They mapped out the DPF and EGR when it was just meant to be a power upgrade but left them both in place so my whole exhaust system was chocked full of soot because the ecu didn’t know the DPF existed so did no regens
They also managed to bore a hole right through the DPF destroying all the sensors inside it.

 

[The Flying Scotsman]

Black smoke out the back is either over fueling or under supply of air ie low boost pressure.

But the DPF should be catching all of the blacks spoot?

The fuel metre in valve governs the fuel rail pressure..... So are the map guys saying that the governing valve has got an issue and causing incorrect injection quantities?

I smell a rat here... I think I would go back to stock OEM and see how the van runs..... We've had reports of black smoke out the back on here and it's normally always related to a third party engine map, normally to be more specific the injector individual codings.

Ask to go back to standard and run it for a month before you spend any money on engine parts.?

The new mapping place ran diagnostic it said low fuel pressure.
I’ve had the injectors tested and they are fine apparently.
I definitely hear a ticking that increases with the revs.

 

[Dundee_Kev]

.
You any ideas mate?

I'm with @Dellmassive I think getting it back to stock software is the way forward. However, that ain't so easy as you'd get dpf and egr faults. So you'd need stock software but with egr and dpf mapped out but also egr would need blanked.

I assume there is no air leak on the system when under load? But I'd expect fault codes if there was.

Stock software, followed by live data for @mmi to digest would be your best bet.

 

[Dellmassive]

No I took it to a garage who specialises in custom maps after coming to the conclusion that the map wasn’t right.
Turned out they made a right mess of it originally.
They mapped out the DPF and EGR when it was just meant to be a power upgrade but left them both in place so my whole exhaust system was chocked full of soot because the ecu didn’t know the DPF existed so did no regens
They also managed to bore a hole right through the DPF destroying all the sensors inside it.

Soz.... This was from earlier, but bad signal so it never got sent.

***

Oh Jesus, what an absolute nightmare for you.

Stories like this keeps me awake at night.

And why I'm an absolute anti-mapper myself personally.

...


Total nightmare, and now that van is effectively illegal to use on a UK road with no DPF. And I deleted emission control system.... And we'll probably fail the emissions check on the MOT.

As you say they've now destroyed your DPF as they had to drill through it..... Which is how comes you're getting black soot at the Tail pipe..... And possibly high back pressure which could effect the turbo bearings and cause further problems down the line


..

So to get your van back to OEM,

You need the original map plus now a DPF plus the sensors that go in it plus anything else that they've bodged?.... That's thousands of pounds already. Who is going to pay for that?


***

 

[The Flying Scotsman]

Soz.... This was from earlier, but bad signal so it never got sent.

***

Oh Jesus, what an absolute nightmare for you.

Stories like this keeps me awake at night.

And why I'm an absolute anti-mapper myself personally.

...


Total nightmare, and now that van is effectively illegal to use on a UK road with no DPF. And I deleted emission control system.... And we'll probably fail the emissions check on the MOT.

As you say they've now destroyed your DPF as they had to drill through it..... Which is how comes you're getting black soot at the Tail pipe..... And possibly high back pressure which could effect the turbo bearings and cause further problems down the line


..

So to get your van back to OEM,

You need the original map plus now a DPF plus the sensors that go in it plus anything else that they've bodged?.... That's thousands of pounds already. Who is going to pay for that?


***

Totally. Turning my van back to standard will be an expensive nightmare.
TBH I’m quite happy the DPF and EGR are mapped out as they are both just future problems.
The garage its at has removed the DPF guts. But not blanked the EGR.
I’m hoping once the fuel pressure regulator gets replaced he will be able to work out what the fueling problem is and get it sorted

 

[Kind of Blue]

I do hope that you manage to get it sorted. Not happy that people are having these things deleted for others to sort out at a later date. I was sold a Landrover with all those things things deleted, from a very well known dealer and supplier of LR's and made them take it right back after I was suspicious and had the vehicle investigated by a specialist which cost me money. I wish that I had reported them and made a public fuss they where very pissed off that I asked them to take it away at no cost to me refund me and it set them back. All very innocent from them, yet they built it!!!

 

[The Flying Scotsman]

I do hope that you manage to get it sorted. Not happy that people are having these things deleted for others to sort out at a later date. I was sold a Landrover with all those things things deleted, from a very well known dealer and supplier of LR's and made them take it right back after I was suspicious and had the vehicle investigated by a specialist which cost me money. I wish that I had reported them and made a public fuss they where very pissed off that I asked them to take it away at no cost to me refund me and it set them back. All very innocent from them, yet they built it!!!

The company that did the conversion dropped it off somewhere to be remapped before I picked it up as an optional extra.
My 2 years mechanical warranty I got with the van has ran out so I’m stuffed regardless

 

[The Flying Scotsman]

I'm with @Dellmassive I think getting it back to stock software is the way forward. However, that ain't so easy as you'd get dpf and egr faults. So you'd need stock software but with egr and dpf mapped out but also egr would need blanked.

I assume there is no air leak on the system when under load? But I'd expect fault codes if there was.

Stock software, followed by live data for @mmi to digest would be your best bet.

Fault codes are low fuel pressure and 02 sensor.
Before the new map fault code was overboost. Which mapper told me immediately it was a problem with the map.

 

[Dellmassive]

What engine is it?

 

[The Flying Scotsman]

What engine is it?

It’s a 68plate 102bhp

 

[Dellmassive]

It’s a 68plate 102bhp

Have you got the four digit engine code?

It will be on the sticker underneath the dash.