Missing needle lift sensor on AKN 2.5 TDI

Hello everyone,
unfortunately, I recently realized that I apparently couldn't see things quite correctly.
It started when I ordered an OBD2 interface from the shop and started poking around in the error memory.
The error memory for the engine informed me that the cable of the throttle position sensor was broken or that the B+ line was shorted to ground.

After I lifted the rocker cover of my car for the first time since buying it,
I thought that my more or less modest technical knowledge should be enough to
find the throttle position sensor (TPS). It wasn't a problem with my old 1z Audi.
However, with this engine, I was unable to find it. I couldn't believe it...
A look in the workshop manual showed me that cylinder No. 3 normally houses the NHG.

Since I am sure that I have found the injectors, because the piping came from the VEP, I wonder where this rascal is.
The thought occurs to me that this one was removed by one of the previous owners. Could I be right? If so, what does the connector look like? Where is it normally located?
I would be very grateful for a short tip, photo, or a hint.
I am very confused. Therefore, I hope for a quick response.

Thank you very much.

Greetings from sunny Baden
.
Marco



P.S. marco@marco-mattheis.de

Since I am certain that I have found the fuel injectors, because the piping led away from the VEP (variable valve lift system), I wonder where this rascal is. It occurs to me that this part may have been removed by one of the previous owners. Could I be right about that?

The question is, are you serious? I believe the nozzle is located in the right bank. There's a cable connected to it. See, when you remove the cylinder head cover.

Take a closer look again; it's definitely installed in the car .

It's actually quite easy to identify. If the injector is connected to a cable, then that's it. Besides, she is taller than the others.

Okay, the nozzles run directly through the cylinder head cover (which you have already found ). The NHG (Nitrogen Humidification Generator) is located on the right bank, facing forward. If you stand in front of your car on the left side, it's the middle nozzle. Under the cylinder head cover, right next to this nozzle, there is a recess in the cylinder head (on the intake side). The cable from the NHG has a half-moon shaped seal that seals this recess. Follow this cable until you find the plug.

Unfortunately, I can't explain it any better, but it should work now...

Well... how was it back then with the TDI engine and the gasoline transmission?

bastion wrote:

It is actually very easy to identify. If the injector is connected with a cable, then. Also, she is bigger than the others.

The cable is not easily visible; you would need to remove the cylinder head cover to see exactly which nozzle it is connected to. Furthermore, I couldn't detect any difference in size!

Therefore, I have to defend Prestwick a little bit...

@Rainer
"TDI with gasoline transmission"?

@bastion

In the V6 TDI engine, all the injectors are the same size!

The 4-cylinder and 5-cylinder TDI engines have protruding injectors (on cylinder 3 in the 4-cylinder engines).

m;

Quote:

What do you mean by "TDI with gasoline transmission"?

Hi,

A few weeks ago, someone wrote in the forum that their new used car wasn't reaching the stated top speed. Apparently, to save money, they had simply installed a readily available transmission from a gasoline-powered car, which had a much shorter gear ratio. Motto: From 2 pieces of scrap, make the car run smoothly .

Best regards, Rainer.

Oh, so you were suggesting that the NHG (presumably a specific regulation or law) was actually removed. I thought it was meant to indicate that someone had written something nonsensical or irrelevant. It seems like it was meant to apply to me (a joke from my wife, see my name)

Hello again,
Since I didn't know that the valve cover was still on top of the fuel injectors, and all that was visible from above were the Ermedo fittings for the high-pressure connection, it's impossible to tell if everything is properly connected.
Thank you so much for helping me so quickly. I'm going to take a close look at the cable routing and the connector.
I hope I can find something there...

Thank you very much.

Best regards,
Marco

@

Why are they only visible on 4-cylinder and 5-cylinder engines? Are the injectors located deeper in the cylinder head for the V6 engine?

Hello everyone,

For all nozzles, the high-pressure (HD) fittings are visible. They all seem to be the same length...
So far, it seems okay.

Marco.

I don't know who you mean by "@", but maybe I can explain it to you.

The injectors on the V6 engine pass directly through the cylinder head, between the valves, while on other models they are arranged on the sides. Therefore, the injector also has a longer path and is largely hidden under the cylinder head cover. The connection from the high-pressure fuel pump therefore runs under the cover, away from the injector. The nozzle attachment (this plate with the two nuts) is also located under the hood.

Why can't I tell you...

The V6's nozzles are visible, but they are not emphasized any *MORE* than the others.

This only applies to engines with 4 and 5 cylinders .

The other 5 injectors on the V6 engine are also "long".

m;