Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

Cleaning Injectors, Pump, and Injection System

Model: Alfa Romeo 156 MK 1 - Years 1997-2007
Part: Fuel injectors

If your diesel engine has severe deposits, it is necessary to clean the injection system. Remove the intake hose that connects the filter to the engine, start the engine, and try to spray the appropriate cleaning compound. If the deposits are heavy, a more thorough cleaning is required. Fill the vaporiser with the designated liquid, position the dispenser in front of the intake mouth, start the engine, and adjust the dispenser correctly according to the supplier's specifications.
It is essential to adjust the nozzle of the vaporiser accurately to provide the correct dose of liquid.
Allow the engine to draw in all the liquid and check the engine's proper functioning by monitoring the exhaust gases.

Updated on 2 February 2026 by ScegliAuto

This video is currently unavailable

Related tutorials

How to Replace the Clutch Pump on an Alfa Romeo 156
How to Replace the Clutch Pump on an Alfa Romeo 156
Alfa Romeo 156 (1997-2007 / MK 1) To access the clutch pump, you need to create the necessary space by removing the air filter, battery, and its support. In the compartment, you will …
How to Replace the Damaged Fuel Pump on Alfa 156
How to Replace the Damaged Fuel Pump on Alfa 156
Alfa Romeo 156 (1997-2007 / MK 1) How do you replace the damaged fuel pump on a 156? Remove the rear seats to access the compartment dedicated to the fuel pump. Use a socket wrench to…
Fuel Pump Replacement on Alfa Romeo 156
Fuel Pump Replacement on Alfa Romeo 156
Alfa Romeo 156 (1997-2007 / MK 1) If you have issues with the fuel pump on a 156, it is better to replace it. Disconnect the battery cables, then remove all the rear seats from the ca…

Other guides you may be interested in

Fuses Location and Diagram for the Volkswagen Crafter

In this guide, we will look at the location of the fuse boxes and how to find their diagram for the Volkswagen Crafter. First, get inside the vehicle and start by removing the plastic cover found under the steering wheel, to access the internal fuse box; you will find another fuse box in the engine compartment by removing the plastic cover located next to the battery. At this point, use the owner's manual to find the fuse diagram, which will allow you to identify and replace any blown fuses with new ones!

Watch the video!


by ScegliAuto

More videos