Fuel injector replacement

Greetings to all car enthusiasts! I will make another record of the work done!

And so the replacement process itself:

1. Disconnect the battery! Definitely, because we work with gasoline! Better to be safe!

2. Next, I turned off the fuse (No. 28 in the diagram) of the fuel pump to relieve pressure from the fuel line.

3. Remove the protective cover from the engine.

4. Unscrew the 2 screws holding the distribution line and pull out

5. We try to avoid getting dirt into the intake manifold wells.

6. Disconnect the connectors from the injectors, they are double there.

7. Remove the retaining clips from the injectors, carefully prying with a flat screwdriver.

8. Reassemble in reverse order.

9. Before installing new injectors, be sure to install with new sealing rings (8 pcs. No. 035 906 149 A)

Well, now the actual reason for the replacement!

1. The car twitched at XX - fixed
2. Vibration during acceleration - fixed
3. Vibration at a speed of 60 km / h - fixed
4. Vibration at a speed of 90 km / h - not fixed (I continue to look for the cause)
5. In 026 group there was a complete chaos (there were no errors due to gaps) - fixed, now on XX in each cylinder the voltage value is about 0, 2xx - the same everywhere! Only in the second cylinder jumps! Perhaps because of the coil - I'll try to swap the coils and see the values.

6. And of course my desire to improve the dynamics! The car seems to run better. Measurements will show how much better.

PS Injectors set BU (mileage about 150 thousand km.). They were fitted to me by OPTIMIST from the Audi-A4-Club, for which I thank him! Of course the injectors were bench tested and cleaned with Wynn's carburetor cleaner! Sprayed like new after cleaning!

Source: https://www.drive2.ru/l/3684810/