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 53 240 Replacing complete injection pipe (M54)
Necessary Preliminary Tasks:
- Switch off ignition.
- Remove cover for fuel injectors. See 13 53 240 REPLACING COMPLETE INJECTION PIPE (M56)
Unclip plug connections (1) from holders and disconnect.
When Replacing Injection Pipe:
Remove both holders for plug connections (1) from injection pipe.
Disconnect plug connection of intake air temperature sensor (2).
Disconnect plug connection (3) on solenoid valve of VANOS adjustment unit.
Detach terminal strip (4) for fuel injectors from injection pipe.
Recycling
Fuel in fuel lines is under pressure (approx. 3 - 5 bar). Fuel escapes when fuel lines are detached. Catch and dispose of escaping fuel.
Observe country-specific waste-disposal regulations.
E53 And E46 Only:
Remove heater bulkhead, refer to 51 71 080 REMOVING AND INSTALLING/REPLACING HEATER BULKHEAD .
Z3, E85, E39, E46 and E53:
Unclip fuel line (1) from holder (2).
Follow instructions for unlocking fuel line, refer to 13 53 540 REPLACING, SEALING FUEL HOSES .
Unlock fuel line (1) from cylinder head at rear.
Release screws (1) and remove injection pipe with fuel injectors.
Installation:
Coat sealing rings of fuel injectors with anti-seize agent to facilitate fitting of injection pipe.
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.