Fuel Injector Seal Replacement (Removal & Installation — 1 pc.)
Timely replacement of the copper sealing washer under the injector is essential to maintain combustion chamber compression. If the seal fails, combustion gases leak out ("black death"), leading to heavy carbon buildup, potential damage to the injector, and loss of engine efficiency.
Signs of a failing injector seal:
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A distinctive "hissing" or "chuffing" sound while the engine is running.
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The smell of diesel exhaust or burning under the hood and inside the cabin.
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Visible black, tar-like carbon deposits around the injector.
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Rough idling or unstable engine performance.
What is included in the service:
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Careful removal of the fuel injector.
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Thorough cleaning of the injector seat (well) and the injector body from carbon deposits.
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Installation of a brand new high-quality copper sealing washer.
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Re-installation of the injector using the correct manufacturer-specified torque.
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Leak test after engine startup.