Setting the start of the spray function in Audi, how much does it cost?

Hi

I would like to have the fuel injection system checked and, if necessary, adjusted for my A6 TDI engine with engine code AEL. What would the approximate cost be? I won't let them take advantage of me.

Background --> The engine starts poorly between 9 - 15 degrees Celsius outside temperature.

Greetings

Hi,

With €50-75 to get started, you're in.

The diagnosis with the '1551' can be free at Audi if you are lucky and persuasive.

hello Honk,
I also have an AEL and experienced the same problem. The cause was the start of the injection, but the fault memory showed nothing, so everything was within the normal range.
I then adjusted the spark timing approximately 3 degrees earlier, based on advice from the forum (you can easily do this yourself), and since then my engine has been running smoothly. Let's try it!
It would be great if you could keep us updated.
Best regards, Bastianna

hello Honk,
I also have an AEL and experienced the same problem. The cause was the start of the injection, but the fault memory showed nothing, so everything was within the normal range.
I then adjusted the spark timing approximately 3 degrees earlier, based on advice from the forum (you can easily do this yourself), and since then my engine has been running smoothly. Let's try it!
It would be great if you could keep us updated.
Best regards, Bastianna

@ Honk
'It's better to buy a Vag-com and do it yourself, it's definitely worth it (e.g., timing belt replacement, troubleshooting...).'

Hello, Honk,
I also have an AEL and experienced the same problem. The cause was the start of the injection, but the fault memory showed nothing, so everything was within the normal range.
I then adjusted the spark timing approximately 3 degrees earlier, based on advice from the forum (you can easily do this yourself), and since then my engine has been running smoothly. Let's try it!
It would be great if you could keep us updated.
hello bastianna

Hmmm, the question is just how? While I mostly do everything myself, I haven't yet dared to tackle this particular project.
Can you give me an 'instruction'?

Thank you and best regards.

It's quite detailed in a technical article. Note that with the 5-speed gear, it's the pulley that gets twisted, not the pump, and you'll need a retaining device for that.

hello Honk,
As Christians describes, all the information can be found in the relevant articles.
If you don't have a fuel injector, you can also remove the fuel pump (make sure to mark it first) and then adjust for early timing.
I read that you have an Audi 100 Coupe S, a really beautiful car. Do you have any pictures?
I used to drive coupes as well; a 1973 model with 115 horsepower and a 1974 model with 112 horsepower.
Best regards, Bastianna

Hello, Honk,
As Christians describes, all the information can be found in the relevant articles.
If you don't have a fuel injector, you can also remove the fuel pump (make sure to mark it first) and then adjust for early timing.
I read that you have an Audi 100 Coupe S, a really beautiful car. Do you have any pictures?
I used to drive coupes as well; a 1973 model with 115 horsepower and a 1974 model with 112 horsepower.
hello bastianna

I've also looked at that, but it's described for the 1.9L pump. There certainly isn't everything that's the same.

Since it seems like many people are driving a 5er, a revised article would be great . Also, the 5er has two different pumps: one up to 94 and one from 95. Also, the process will not necessarily be exactly the same.


I can send you some photos of my coupe by email if you like.

Greetings

Hi,


The AEL is also supported by the tool.

Hello, Rainer

Hi,

The AEL is also supported by the tool.

Hello, Rainer

Hmm, if I were to configure this myself, I could 'only' verify that the values are correct. What worries me is the self-configuration. The TDI's are also very sensitive to this.
Greetings

Honk wrote:

Hello, Rainer K. wrote: The AEL is also supported by the tool. Hello, Rainer Hmm, if I were to configure this myself, I could "only" verify that the values are correct. What worries me is the self-configuration. The TDI's are also very sensitive to this. Greetings

Hm?

With a meter stick, I can only check if a board is too long; you have to cut it yourself.

If you don't want to set your own starting point, what do you ask for in terms of tools?

Edit: Ah, now I understand your problem. No, you cannot set the injection start with a VAG tester or VAG-COM or whatever, but only check it.
To adjust, you will need a wrench
But without knowing the current SB, you can't make any adjustments and you also don't know in which direction and how much you need to turn. All ambiguities cleared?

Hi,
I built this myself (using flat steel with 2 M10 screws).
It can result in multiple attempts failing. However, it is not really tragic if you have marked the location of the relevant parts beforehand. This is at least enough for it to work and you can control the new setting. Two pumps means old with potentiometer and new with inductive position detection in MSW. But there is no difference here.
Generally, some prior experience with tinkering is expected.

Edit: Ah, now I understand your problem. No, you cannot set the injection start with a VAG tester or VAG-COM or whatever, but only check it.
To adjust, you need a wrench . But without knowing the current setting, you can't adjust anything and you also don't know which direction or how much to turn. All ambiguities cleared?

I understand that the tester is only for checking the starting spray, not for setting it. I just wanted to know if I can adjust the pump in the same way as described in the article for the 1.9 liter version. Because it says 'Checking and adjusting the 1.9 liter TDI distributor fuel pump' not 1.9 and 2.5 liters. I just wanted to ask if it's 'the same'.

Greetings

Honk wrote:

I just wanted to know if I can adjust the pump in the same way as described in the article for the 1.9 liter version. Because it says "Check and adjust the 1.9 liter TDI distributor pump" and not 1.9 and 2.5 liters. That's just what I wanted to ask, to see if it's "the same".

Hm, as far as I know, both are VP37, but the number of high-pressure connections (4 or 5) is different.
Therefore, the adjustment work should be the same.

I'll just try it based on the article.

If it works (which I expect, as long as nothing is broken and the instructions have been followed), I will add to the article: "1.9L VP engine and 2.5L 5-cylinder"

Hi,
as mentioned above, the main difference is that the camshaft is rotated towards the pump instead of the pump. Apart from that, it's the same. In my case, the fuel injector adjustment tends to stick at around 13V, which corresponds to late adjustment. If the EDC has more control during driving, the car starts poorly. This could also be due to the wear of the ESP, not the principle. On the other hand, the "angle window is smaller with 5 instead of 4 cylinders, so that the same movement of the fuel injector adjustment should achieve more change in the timing." Unfortunately, I haven't had the chance to disassemble an ESP module yet, so I would be much more informed.