Valve Pump Nozzle: Exceeded Limit? Practical Guide.

Hello everyone.

I'm having a small problem with my Passat AJM; it's giving me some error messages.
17669, 17672, 17675. I've already searched for information on these numbers here, but I only found keywords like "regulation time too large" and "transition resistance."

Can someone explain to me what this means in practice?

The problem started when I switched to using cold-pressed rapeseed oil as fuel in a two-tank system.

When starting with diesel fuel, I get good performance. However, if I switch to heating oil (fuel oil), the power may drop immediately, or it might take about 10-20 kilometers for the engine to adjust.
Then I also have this error code stored in the diagnostic memory.

Could this error cause a slight decrease in performance? (The engine no longer responds as quickly to accelerator pedal movements, and it feels like the power output has decreased by about 15 horsepower.)

By the way, the AGR valve is "defective", and the engine has been started using a PSI box .

Hello,

Operating a Pump Denoise TDI engine with rapeseed oil (which should not be confused with biodiesel) is not feasible. After a few kilometers, the high-pressure pumps (PDEs) are likely to fail or burst.

Did you modify it yourself, or was it done by a specialized company? PÖL (presumably an abbreviation) only works with VP models.

I can only advise you to operate it exclusively with diesel fuel.

Hello Thomas.

Take a look at the page.

www.fmso.de

There's a guy named 2LHeiko who has driven approximately 100,000 km in his car with a PD engine, and he even uses old cooking oil. There are also other people in the vehicle database who are running their PD engines on vegetable oil.

What does this error actually mean in practice? Can you explain it to me?
I can't make sense of the written texts.

"It runs perfectly fine (even quieter than with diesel), but it has slightly less power, and that's a fault code that doesn't appear with the diesel engine."

I personally modified it (of course, after sufficient study and attending lectures related to the topic).

Best regards, Michi3.

If you've been diligently reviewing the materials, you should have come across information about underperformance as well.

We also see it clearly with the T3-TD bus when we power it using a Poel fuel cell.

But with free Altpoel...

"However, a JX engine is slightly cheaper than a PD engine, so I wouldn't do it. Not even my 1Z gets anything other than Dino Diesel."

Okay, please provide the German text you would like me to translate into English. I will only provide the translation.

dieselmartin wrote:

... We also see it clearly with the T3-TD bus when we power it using a Poel fuel cell. ...

Enjoy your meal! / Have a good lunch!

With or without renovation?

Hi, Jockel.

dieselmartin wrote:

If you have diligently reviewed the presentations, you should also have come across information about underperformance.

Oh really? That's quite something new .

Quote:

We also see it with the T3-TD bus when we power it using Poel - noticeably.

Connect a thick hose from the tank to the filter; an inner diameter of 10mm or greater is okay for the JX. You'll be surprised how well the engine suddenly runs. Keyword: internal pressure/injection control .

Quote:

But with free Altpoel ...,

With this setup, our JX runs ten times faster than with diesel. You might not believe it now, but just try it with the thicker hose.

Quote:

But a JX is slightly cheaper than a PD engine, so I wouldn't do it. Not even my 1Z gets anything other than Dino Diesel.

Whether it's cheap or not, my car with a small engine has 483,000 kilometers on the clock. If it breaks down, it definitely won't be due to the fuel quality.



@Thomas:

Quote:

Operating a Pump Denoise TDI engine with rapeseed oil (not to be confused with biodiesel) cannot function properly. After a few kilometers, the PD injectors should fail or burst.

That's interesting. Where did you get this information?

Quote:

Did you modify it yourself, or was it done by a so-called "specialized company"? PÖL only works with VP models.

Who says that?

Quote:

I can only advise you to operate it exclusively with diesel fuel.

Your advice is very helpful. After all, everyone knows that the engine breaks down due to fuel issues . Even my regular drinking buddies know that }. But actually, Michi asked something else...



Best regards, Uli.

Hi Uli,

I had already heard something about underperformance back then, well, at least we have them.

"Thick cable - tell that to the owner of the bus; I'm just a user and a general handyman. If there's no budget for thick cables, then there won't be any cables ".

But the thing about the fuel injectors is making me suspicious – you're right!

"Umbau" is a DIY reverse osmosis water treatment system and includes two Sirai valves (inlet and a bypass valve for short-circuiting)."

Okay, so we still have things to do!

Thank you.
Okay, please provide the German text you would like me to translate into English. I will only provide the translation.

dieselmartin wrote:

Thick cable - tell that to the owner of the bus; I'm just a user and a handyman. If there's no budget for thick cables, then there won't be any cables

.

Hi Martin,

This is something I will never understand: There's money available for 2 Sirai units (150€), but apparently, 6€ for 3 meters of WiCu pipe from the hardware store or 15€ for 3 meters of PA hose are too expensive . Especially with a T3 vehicle, laying it is actually very easy, and you get rid of all the problems associated with the thin cable and the KGR (roof rack).

Na ja, vielleicht kriegst Du ihn ja überzeugt. Wenn Du mal neue Düsen (für 100%-Kaltstart) brauchst und Henzo keine Zeit hat, ich bin ja auch noch da . Ggf. PNBitte gib mir den deutschen Text, den du übersetzt haben möchtest.


Best regards, Uli.

Hi Uli,

We only installed thicker pipes in some areas – specifically, the new supply lines for the two-tank conversion – but not completely throughout the system.

The engine is new, but I don't know about the nozzles.
We just replaced the turbocharger.

However, the pump is still having issues with the controller – it occasionally gets stuck and makes a popping sound.

Okay, please provide the German text you would like me to translate into English. I will only provide the translation.