Starting problems with 1.9 TDI after injector replacement

Hello and good evening, dear forum members,
I'm having a problem. I bought some 50%+ injectors for my Seat Leon 1M with engine code ARL. I installed these parts, and also used new screws and seals for them (the vehicle was running perfectly fine until the parts were removed).
"When I tried to start it for the first time, it wouldn't crank, even after repeated attempts. Following advice from a friend, I suspected that the dowel pins might have broken during installation or that the new seals might have been damaged. So, I quickly disassembled everything, checked the parts, replaced the screws and seals, and reassembled it. However, it still wouldn't start, even with the original software. It was optimized, and even when I halved the starting injection amount, it still wouldn't start. I'm convinced that it's not injecting fuel, even though I drove the car to this point. My question is, how can I further investigate the cause of the problem?" I had the glow plugs removed, and there was no visible injection or atomization of fuel during the starting process. I hope you can help me, thank you in advance.

Good evening.

As always, after you've read everything carefully, we introduce ourselves here:
1. Autoscan.
2. All relevant changes in the crafting area.

"If software and hardware changes have been made, what's the point of trying to guess? An ARL (presumably referring to a specific type of device or system) is at least 10 years old now, and I think there's an answer to every conceivable question here."

We can't see what you're doing, and we don't know the quality of your work. Hopefully, before any software is modified or adapted, everything is mechanically and electrically as it should be.


Oh, by the way, just so you know, without me trying to put you down or anything.


The title of your post is really well-done... it fits perfectly with the rest.

Thank you for the quick response, and please excuse the title and the post. As you can probably see, this is my very first post in this kind of online forum.

The error memory is clear except for a crash sensor located under the passenger seat.
Only the software has been updated, and it is now standard. It also has a hybrid charging system, and otherwise, everything is in order, both mechanically and electrically. Sure, here's the translation:

"Best regards," or "Sincerely,"

What is the source of these +50% PDE values?
Are you sure everything is okay with that?

Does the pre-lift pump activate when the ignition is turned on?


Spray a small amount of starting fluid into the air filter while cranking, but only until the engine starts to rev up. I was only able to get my friend's BKC engine running after replacing the head gasket in the same way, and since then it's been starting perfectly.

The nozzles are from the bay and are new.

Yes, the booster pump is running.

I've already tried that. It runs with starting spray, but without it, it doesn't do anything at all, not even a sign that it's going to start.

Hello Henner,

Okay, spontaneously, three things come to mind:

Let the pre-lift pump run for a longer duration via VCDS.
Check (test) the PDE wiring harness.
Check the fuel filter for cracks or replace it with a different fuel filter.

It seems like no fuel is reaching the engine.

That being said, these 50% nozzles seem very suspicious to me... But let's put that aside for now. Good luck.

I managed to get it running for a short time. Please see the attachment.

All the correction values for the fuel injection quantities are at their maximum limits. Awesome nozzles. (Irony off)

BTW. Interesting are also the cracked VAG Com files in the background .

I'm going to withdraw and leave the rest to fate...

There's nothing cracked here... these are just different versions of VCDs. Thank you for your tip. How can I prevent them from running at full speed?

The best thing to do is send them back to where you got them... alternatively, you could hang them on the wall as decoration, or maybe create some small artwork with them. Or, place it next to the PC as a memorial before the next bargain is acquired.

Besides that, I can't think of anything else.

Okay, the components on cylinders 1 and 4 are faulty, which is why the engine isn't running. The correction values were at their maximum because the accelerator pedal was in the full-throttle position; otherwise, the engine would have stalled.

How do you know that 1 and 4 are defective?
hg
Herbert.

When I release the accelerator pedal, cylinders 2 and 3 adjust, while cylinders 1 and 4 do not.

Aha.
Are you sure about your understanding of the LLR function?
hg
Herbert.

Okay, please provide the German text you would like me to translate.