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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis >> Engine Mechanical >> Fuel System >> MULTIPORT Fuel Injection 2.0L (DMSA) >> 24 MULTIPORT Fuel Injection >> Fuel Injectors >> Fuel Injectors, Removing And Installing >> Installing

Fuel Injectors, Removing And Installing: Installing

-- Clean the hole in the cylinder head with the Brush: T10133/4  -item A-.

GWWN24-11182Courtesy of AUDI OF AMERICA, LLC

-- When installing a fuel injector, use a clean towel to clean combustion residue from the groove for the combustion chamber seal and the fuel injector shaft.

Install the Combustion Chamber Seal, Fuel Injector, Bosch

GWWA24-12167Courtesy of AUDI OF AMERICA, LLC

-- Slide the Calibration Sleeve: T40433/5  on the fuel injector -1-.

-- Put the Fuel Injector Removal Tool - Assembly Pin: T40433/3  together with the new combustion chamber seal -2- on the fuel injector.

-- Push on the combustion chamber seal using the Removal Tool - Guide Sleeve: T40433/4  up to the seal.

-- Remove the Fuel Injector Removal Tool - Assembly Pin: T40433/3  and Removal Tool - Guide Sleeve: T40433/4  from the fuel injector.

When pushing the combustion chamber seal onto the fuel injector, the seal spreads open. After pushing it on, it must be tightened again, as described in the following.

GWWA24-12168Courtesy of AUDI OF AMERICA, LLC

-- Slowly remove the Fuel Injector Removal Tool - Calibration Sleeve: T40433/5  with a gentle rotational movement (approximately 180°) from the fuel injector -1-.

Install the Combustion Chamber Seal, Fuel Injector, Continental

GWWA24-12169Courtesy of AUDI OF AMERICA, LLC

-- Put the Fuel Injector Removal Tool - Assembly Pin: T40433/3  together with the new combustion chamber seal -2- on the fuel injector -1-.

-- Push on the combustion chamber seal using the Removal Tool - Guide Sleeve: T40433/4  up to the first seal.

-- Remove the Fuel Injector Removal Tool - Assembly Pin: T40433/3  and Removal Tool - Guide Sleeve: T40433/4  from the fuel injector.

When pushing the combustion chamber seal onto the fuel injector, the seal spreads open. After pushing it on, it must be tightened again, as described in the following.

GWWA24-12170Courtesy of AUDI OF AMERICA, LLC

-- Press the Fuel Injector Removal Tool - Calibration Sleeve: T40433/5  with a gentle rotational movement (approximately 180°) all the way onto the fuel injector -1-.

-- Remove the Fuel Injector Removal Tool - Calibration Sleeve: T40433/5  again, with a rotational movement in the opposite direction.

Continuation for All: 

Fig 1: Exploded View Of Fuel Injector
GWWA24-10921Courtesy of AUDI OF AMERICA, LLC

-- Coat the new O-ring -4- with clean engine oil before installing the fuel injector -2-.

-- Press the fuel injector by hand all the way in the oil and grease free opening for the cylinder head. Make sure the fuel injectors are positioned -arrow- correctly inside the cylinder head.

Fig 2: Identifying Tab And Opening
GWWA24-11104Courtesy of AUDI OF AMERICA, LLC

-- Install the support ring onto the fuel injector.

-- If removed, install the Piston Cooling Nozzle Control Valve -N522-. Refer to Piston Cooling Nozzle Control Valve -N522-, REMOVING AND INSTALLING .

-- Install the fuel rail. Refer to FUEL RAIL, REMOVING AND INSTALLING .