Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
13 53... Removing and installing/replacing an injector N55 up to engine number 14407684 (bottom hold-down device version)
Special tools required:
Make sure you strictly observe THE WARNINGS ON REMOVING THE INJECTORS !
Necessary preliminary tasks:
- Disconnect NEGATIVE BATTERY TERMINAL (risk of fire due to short circuit on removal).
- Remove IGNITION COIL of corresponding cylinder.
- Disconnect PRESSURE LINES of corresponding cylinder.
Slacken nut (1).
Tightening torque 12 90 5AZ .
Remove earth cable.
Unlock connector (2) from injectors and detach.
Release screw plug (3) and remove.
Release screws (1).
Remove clamping plate (2) and counter support bridge (3).
Clamping plate (2) is a disposable part and must be replaced following removal.
Remove EMC plate (4).
Release screw (1).
Feed out hold-down device (2) and remove.
Lift injectors (3) out of cylinder head and remove.
Mark injectors.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.