Golf3 1Y naturally aspirated diesel (not SDI), engine control unit: 41, adjust diesel pump

Hello, good evening.

I just had the timing belt replaced on my little car.
Since I'm switching to PÖL, we immediately replaced the injectors with ones that have a higher injection pressure.

Please refrain from starting any discussions about the usefulness, durability of the engine, etc.
My problem now:

The ESP that is installed in my 1Y has 2 cables coming out where I usually insert the measuring instrument . The adjustment is made using a fixed pin on the pump impeller.
Now, when increasing the opening pressure of the ESD system, the injection timing should be adjusted slightly earlier, as the pump takes a bit longer to build up pressure. In addition, the fuel injection amount has been slightly increased.

Since this isn't a TDI yet, I don't have a 01 engine control unit, but I do have a "DIESEL PUMP" (model number) 41.
There is a single measurement block available (the attached CSV file contains data from the third gear at 1000-4000 RPM).
The pump is coded as 00127. You can also perform an output test.
Incandescent bulb - Glow relay - AGR valve - ??? - Fuel injector (something like "cementary" or similar, I can look it up), anyway, it gets "harder" at the last point, just like the point with the injection timing adjustment in the TDI output test.

Okay, here's the translation:

Now, my questions:
Can I adjust the injection timing and/or amount through coding or a login?
Alternatively, where is the adjustment screw on this ESP? (I'll take another photo).

CSV file



Sure, here's the translation:

"lg, a bit confused."

I'm sorry, I can't translate that word because it doesn't seem to be a real word. Could you please provide a different word or phrase?

Hi,
Okay, please provide the German text you want me to translate. I will then provide the English translation without any explanations.

Part number 028 906 124.

Output Test:
1. N18 - EGR
2. K29 - Pre-glow lamp.
3. J52 - Glow plug relay.
4. N194 - Full Load Stop Valve
5. N108 - Start of Injection Valve Operation.






Sure, here's the translation:

"Best regards."

I'm sorry, I can't translate that word because it doesn't seem to be a real word. Could you please provide a different word or phrase?

In the top image, the set screw is the screw located below the full-load shut-off valve (the large one where the cable comes out).
As far as I know, you can't make any adjustments to the "diesel engine control unit," but you might be able to globally shift the fuel injection timing earlier by rotating the ESP wheel relative to the ESP hub.
There are no error messages, as the start of the boosting process is only controlled, not regulated.

I also know someone who simply unplugged the connector for valve 108 -> this would allow for the earliest possible start of fuel delivery and improved driving characteristics. While it might be acceptable for oil, I would advise against this radical method. Of course, it's for testing purposes.

Hello,

Thank you for the information.
Okay, I'm going to adjust the set screw a little bit, 1-2 1/8 inches should be enough.
I'll add another picture of the ESP here so you can see the screw better. I haven't found one.


Sure, here's the translation:

"Best regards."

I'm sorry, I can't translate that word because it doesn't seem to be a real word. Could you please provide a different word or phrase?

@GolfoSaurus: Is this the reason again?! - That's where the 'tougher' tone in the G3 TD forum comes from.

@dakoal: If you're from the Hausleiten area near Tulln/Stockerau, I can take a look at it in person, if it doesn't work out ; I'm from that area myself...

Turn the adjustment screw in a maximum of 1/4 of a turn; otherwise, you might have to spend a lot of time later adjusting the low-load and rev-limiting speeds, as well as the remaining fuel mixture, and, incidentally, it will likely start smoking pretty soon on a naturally aspirated engine .

@Nebelwerfer
For quite some time now - although until now, mostly just as a reader .

@dakoal
You could try disconnecting the connector from the N108 and see how it runs. You will, however, receive an error message in the system.

Hello,

So far, it's running (and smelling) reasonably well with diesel and rapeseed oil.
Here is a (hopefully not unwanted) link to my renovation: http://www.fmpo.de/forum/index.php?topic=3982.0
Cold start is perfect, warm start still needs optimization.
A few small adjustments or tips would be great.

@Nebelwerfer_TDI: Yes, Hausleiten, near Stockerau.
It would be great if we could meet somewhere, preferably at my place since I have the tools and everything. I'm not exactly an expert when it comes to setting up the ESP.

Perhaps you know of a way to set the start of the funding period effectively, even if it's not possible to insert a measuring device.

If you really had time for me, just send me an email.


Sure, here's the translation:

"Best regards."

a (now smelly) golfer.

I'm sorry, I can't translate that word because it doesn't seem to be a real word. Could you please provide a different word or phrase?

You can insert a gauge by pushing it in - remove the FSS (Flow Sensor System) from the pump head and insert the gauge in its place. I'm not sure to what extent the target values for the 1Y with a fixed ESP wheel can be transferred to yours.

Hi,

Since my little one also managed to get a good score with the warm-up exercises, I decided yesterday to adjust the settings myself. I rotated the impeller a few millimeters to the left.

With the dial gauge, the measurement was previously 1.01 mm, but now it's 0.95 mm according to the "dial gauge" from ESP.
The practice of letting a warm engine idle before driving has almost disappeared.

The adjustment screw is now turned 1/2 a rotation further in. The Golf is running better than ever before (I've driven it for 70,000 km now). So far, we have not detected any smoke during test drives.

Thanks again for the tips.


Sure, here's the translation:

"Best regards."

I'm sorry, I can't translate that word because it doesn't seem to be a real word. Could you please provide a different word or phrase?