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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 315 (Fuel System) >> Fuel Injection, Diesel >> INJECTOR(S), Fuel >> Standard Procedure >> Cleaning Fuel Injectors

Cleaning Fuel Injectors

WARNING: This page is about a different car, the 2010 Dodge Charger and 2010 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Locating Fuel Injectors
GC0080491Courtesy of CHRYSLER LLC
NOTE: Before cleaning the injector recesses, seal the injector holes in the injector recesses with the appropriate pin to prevent debris from falling into the recesses and entering the motor.
  1. Using a lint-free rag, wipe the cylinder head around the fuel injector.
  2. Wipe out injector recesses with a lint-free cloth, then clean with a cylinder brush.
  3. Clean the bottom of the cylinder recess with a round brush.
  4. Blow out the recess and clean again with a lint-free cloth and cover over.
  5. Perform these steps for each injector recess.
    NOTE: DO NOT clean the tip of the injector with a wire brush. Use a lint-free cloth.
  6. Clean injector body with a wire brush.
  7. Clean injector tips with a lint-free cloth.
    NOTE: Do Not apply anti-seize lubricant to the injector nozzle, apply only to the injector body.
  8. Grease injector body with anti-seize lubricant.
    NOTE: Injector tensioning claw bolts are one time use only, and must be replaced if loosened or removed.
    NOTE: Always replace the seals that seal off the injectors at the cylinder head to the combustion chamber.