Polo 9N3: kann ich tatsächlich Fördermenge Diesel messen? | Posts 16+

13-01-2014, 23:51 Subject:

stolley wrote:

What exactly were the problems you were experiencing with the intake manifold? Do we need to expand the entire fuel supply unit for this?

Most likely, there was a seal that was worn out - I installed a functioning used air intake from eBay for around 20 euros and didn't conduct further troubleshooting because I had already driven the forum crazy with troubleshooting before

. I had spent quite a long time in the area of the diesel filter/Knackfrosch/pipes.

The change was very easy - seat surface d. Fold down the back seat, loosen the large plastic cover nut - disconnect hoses + connectors - lift out the basket - put in the new basket and then reassemble everything.

Bye
pax

14-01-2014, 8:04 Subject:

Gurgling noise after a change = air in the system...

14-01-2014, 8:11 Subject:

matthiasTDI96 wrote:

A gurgling noise after a change is likely due to air in the system....

Yes, I think so too!

Here
/viewtopic.php?t=26901
I would like to proceed with the described venting procedure! But where can I find the relevant actuator diagnosis in VCDS?

14-01-2014, 8:43 Subject:

Crazy:

The 6Q0131101A combination valve costs €105.91 originally!!!

14-01-2014, 16:42 Subject:

I think I should also try bridging the combination valve or replacing it with two tubes, or?!

So könnte ich feststellen, whether the valve is actually malfunctioning!
Before I spend 100 euros for free...

15-01-2014, 0:15 Subject:

It was probably indeed the combination valve (apparently responsible for diesel preheating)!

I have, however, expanded and bridged it.
After some playing, he then started up and remained still.

What do you think: can I drive a certain distance (4 x 100km) without the valve?
Does it make a difference if the diesel isn't perfectly warmed up?

Greetings
Volker

15-01-2014, 0:34 Subject:

If there's too much diesel in the tank, it should stop. Best < 10L.

15-01-2014, 6:36 Subject:

Autoservice wrote:

If there's too much diesel in the tank, it should stop. Best < 10L.

Hmm, the tank is full!

What are the implications of this?

15-01-2014, 8:36 Subject:

Let's think about this together: what happens if the element used for preheating fuel is missing...? Think... think... Hmm, maybe it would be helpful to ask the audience.

15-01-2014, 9:04 Subject:

matthiasTDI96 wrote:

Let's think about this together, what happens if the element used for preheating fuel is missing...think...think...hmm, maybe it's best to ask the audience.

Hey, don't be like that!
Is this serious?

OK, the mixture is then thinner, but also less reactive, or?!
I can't really imagine any significant negative effects.

Because the oil is also still cold in the first few minutes of the engine running...

20-01-2014, 18:14 Subject:

Okay, he's back in action!

Apparently, the combination valve was leaking, allowing air to enter the fuel system.

By the way, it doesn't have to be the current original part from VW for 110 euros! The previous part 6Q0 131 101 also works! And you can get it used for 35 euros. Also appears more valuable, as it is made of aluminum instead of plastic.

Greetings and thanks to everyone who helped!