AFN won't start

Hello.

I'm now looking for help in this forum. You are all professionals, aren't you?

My 1.9 TDI isn't starting after the tank was almost empty. Also, there's a strange noise coming from the fuel injection pump when I turn the ignition on.

That rattling noise... he's been making that noise before, but it still starts up.

I've already filled the diesel filter and tried, but nothing.

Yesterday, it briefly started up after I tried to turn it on, but then I turned it off after about 20 seconds and tried to restart it. And I had the same problem again. NO MUCKS:(

Please help urgently!!!

Okay, the engine is from a 1999 Passat 3B.

Your current information is so limited that I can only suggest the following:
Okay, I'm ready. Please provide the German text you want me to translate.

Otherwise, it would be nice if you could avoid making obvious mistakes -> first search, then write - and without shouting in the title (using all caps).

Okay, then I'll try again from the beginning.


SO:
Two days ago, I almost completely emptied the tank, and the next morning, I tried to start the car, but it wouldn't start .
I then added 10 liters of diesel and tried again, but it still wouldn't start.
I just refilled the fuel filter, but it still won't start.
Then I loosened the screw of the injector needle and applied grease. The diesel engine is coming.
No smoke coming out from the back of the car...

My fear is: ESP broken?! It would be a huge coincidence if it broke right after an empty tank .

I've written it in all caps because it's really urgent. I actually need to drive to work tomorrow morning.

If you need any further information, please don't hesitate to ask.

I apologize for the misbehavior .

Addendum.

After I had been cranking it for a long time, the car started and ran for about 3 minutes, then it became very erratic and finally stalled .

Then I noticed that the diesel filter was completely empty again, all of a sudden. Why?
Does the car have an additional fuel pump that might be defective?

Hello,

Are you sure that all the connections on the filter are sealed again? I suspect that air is being drawn in somewhere after the filter was removed.

I've checked everything, but I can't find any leaks.


I just opened the screw on the filter, and it made a hissing sound, so I assume there's a vacuum being created inside the filter.
Consequently, it must also be airtight.
I think my EPS (Electric Power Steering) isn't broken... otherwise, it wouldn't have started *sighs*.
Could there be a blockage in the diesel return or supply line somewhere?
Does anyone have a picture of a fuel tank cap for an AFN engine?


Best regards.

Hm,

Please double-check everything. Fill the filter, including the pump connection, completely with diesel. If it doesn't start, loosen the retaining nuts on the injectors and wrap them with a cloth.
Then, someone briefly mentions 'organ' to 'diesel.' Tighten the mother again and move on to the next nozzle. Since you drove the tank almost empty, it's possible that the sediment at the bottom of the tank is now clogging the filter.

I've checked everything.

"If the fuel filter is full and it cranks for a long enough time, it will run for a short period, and then when it dies, the fuel filter is empty again..."
It's somehow not drawing in any new fuel.

Are there any known issues related to this?

Best regards.

AFNTDI1,9 wrote:

if the fuel filter is full and it cranks for long enough, it will run for a short time, and then when it turns off, the fuel filter is empty again... It's somehow not drawing in any new fuel. Are there any known issues regarding this?

Yes, see Marcos' reply about the sediment from the tank.

It's a perfect fit, like a glove.
-> Put in the new filter, and that should (probably) do it.

It's also conceivable that the intake opening in the tank is now clogged with sludge...

Thank you very much. I'll get started on taking the back apart right away.

Does anyone have a photo of the intake manifold?

Hello:(

I took everything apart and put it back together, but unfortunately, it still doesn't work.
"It only starts when I fill the diesel filter with fuel, and then it runs for a few minutes until the filter is empty..."
"It's just not getting any diesel. I've already cleaned everything in the suction pipe in the tank, and the fuel gauge shows it's about half full."

Does anyone else have any ideas?

I'm really frustrated; I've even considered selling the car today.



Please help me again.

Evening-morning...
Is there fuel in the tank? Open the fuel cap and use a vacuum pump to directly siphon diesel from the fuel line *before* the filter. If that works, attach a hose to the filter inlet and temporarily siphon diesel into it from a container – a clear hose is helpful. I also recommend replacing the filter. Fill the injection pump with fuel using a syringe or similar device, and then bleed it to remove any air.
Were you at the correct fuel pump when filling the 10-liter canister?

Best regards, Robert.

Just a thought...

Please check if the small wheel at the bottom of the fuel filter, which is used to separate water, is still in good condition! They love to break things!

Regards,
Sure, here is the translation of the text from German to English:

"Micha"

Hi.

Well, the filter is new. I tested the screw at the bottom of the filter again, and everything is tight and okay.
There are currently about 30 liters in the tank, but nothing is still reaching the filter.
What is the best way to bleed the system?

AFNTDI1,9 wrote:

What is the best way to bleed the system?

With the ox cart:

Disconnect the fuel line from the pump towards the injectors, and at that connection, use the largest syringe possible (apply multiple times, or use a suction pump) to draw air out of the pump until diesel fuel starts to flow.

If the filled new filter is repeatedly drained from the engine without diesel being drawn from the tank, then you have a problem somewhere between the tank and the filter.

a) to have a plug made from old diesel sludge.

b) a leak through which air is drawn in.

-> Have fun searching. Testing options have already been described in other responses.
I tend to favor option a) due to the temporal connection with the potentially empty tank.

Hello!!

The solution has been found!!!

I'm writing here about what caused the problem so that we can handle similar issues even better in the future.

The relay or wiring to the diesel pump is broken, which is why not enough diesel is reaching the front.

I've now built a temporary setup and connected 12V to the pump... now it's running .


Thank you to everyone who helped me .

especially MichaC