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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

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