Polo 1,4 TDI - Notlauf nach Problem mit Ladedruckregelung | Posts 16+

Quote:

..Wenn es um den Kühlmittelaustausch geht, dann kann man in der warmen bzw. sicher frostfreien Jahreszeit auch ein paar Tage mit "klarem Wasser" fahren....

Dann wird´s rostbraun. Sexperienced myself.
hg
Herbert.

[Translating...]

.:.

Already after just a few days?

Demineralized water is essentially devoid of "life," although it is not completely sterile.

I've never experienced that with French, Japanese, or Hungarian people.

Wohl. Baguette, Sushi und Paprika rosten nicht. That's exactly what happened.
hg
Herbert.

Okay, then I prefer their choice of materials.

I wish you a lovely Sunday!

I'm still in the process of reassembling the vehicle!
But it will.

Regarding the topic of "flushing the cooling system," I asked my mechanic again.
Here is the information about that:

"I did some research and couldn't find anything about flushing the cooling system. My colleague from the technical department also believes that it's not necessarily required."
Bleeding the cooling system is a somewhat more complex process. It should be performed according to the instructions provided by the VAS tester.

I'm a bit confused. It seems like filling the cooling system properly can only be done with a vacuum pump. I'm really unsure about what to do now: Should I just fill the cooling system through the expansion tank and have the rest done by VW?

Perhaps someone with experience can share their insights.
Thank you all!

Hello everyone,

I'd like to briefly revisit the topic of "bleeding the cooling system."
Can VCDS provide support regarding this?

Hello.
While VCDS cannot assist you during the filling process, it can help with bleeding the system. There's a specific program for that purpose.

"With our CSUB system, the vacuum filling process also didn't work correctly because the vacuum wasn't being maintained. Something was leaking. However, the system worked fine under pressure."

I filled it as best I could with a slight vacuum, pressed on the hoses a bit, jiggled the engine a little, and let the system sit overnight. Then I topped up the coolant.

If you don't have the filling device and compressor, you can borrow them. I would fill it through the expansion tank and let it sit overnight. I used about 5 liters.

Start the engine and then run the bleeding program in VCDS when it reaches approximately 60°C.


"Our loader broke down at 172,000 km. Just like yours, the shaft of the compressor wheel was resting on the flap of the EGR cooler. So, almost the same mileage."

Turbo has now been driven for 1300 km, and the engine will have its oil changed tomorrow.

Hi Malo,

Thank you very much for your helpful feedback!
I'll try it the way you described. If necessary, I can still rely on my friend – I've already asked him and let him know that I might come by to bleed the brakes.

It's funny that you had almost the same problem!
You're changing the oil after replacing the turbocharger after relatively few kilometers. According to the turbocharger supplier, it's sufficient to do it after 10,000 km. Is there a specific reason why you're doing it sooner? It's not really a problem, but you were just being extra cautious, right?

Hello stolley,

Several automotive mechanics have independently advised me to change the oil after 1000-1500 kilometers (approximately 600-900 miles) after installation.

"It's funny that you had almost the same problem!"
There are some cases with this type of CSUB motor and similar operating conditions. Axial pressure and the resulting axial clearance, which pushes the compressor wheel against the compressor housing, are not uncommon.

I had the removed particulate filter from my Audi cleaned, and the result was that it was completely full, weighing 90 grams! The limit is 80 grams. The value registered in the engine control unit was 43 grams. I think that also contributed to the problem.

Have you checked the particulate filters?