OEM Buick Lucerne Fuel Injector

Buick Lucerne Fuel Injector Parts and Q&A

• Injector
  12597871
  Q: How to replace the fuel injectors on Buick Lucerne?

  A:

  Begin by removing the Fuel Rail with care to minimize damage to the Fuel Injector electricity pins and nozzles and do not place fuel injectors into any cleaning fluid as they consist of electric parts. Service all parts of the Fuel Injector unit while replacing the o-rings because fuel leakage into engine oil can occur; perform this step during every service procedure. Start the procedure by breaking free of the Fuel Injector retainers then successively pulling out the fuel injectors and disposing of the upper and lower o-ring seals. The selection process for new injectors requires choosing the right one for the specific application since each injector carries manufacturing information consisting of part number identification and production plant number along with a manufacturing date and week code. New o-ring seals require engine oil lubrication previous to installation onto the injectors where the technician should place upper seal types first and lower seal types last. The technician then installs the fuel injectors along with the Fuel Injector retainers. Finally, reinstall the Fuel Rail.
• Injector
  19421334
  Q: How to clean fuel injectors effectively on Buick Lucerne?

  A:

  The required tools for cleaning fuel injectors include j 37287 (Fuel Line Shut-Off Adapters), j 38500-a (Fuel Injector Cleaner), j 42873-1 (3/8 Fuel Line Shut-Off Adapter), j 42873-2 (5/16 Fuel Line Shut-Off Adapter) and j 42964-1 (3/8 Fuel Pipe Shut-Off Valve), also j 42964-2 (5/16 Fuel Pipe Shut-Off Valve). The approved cleaning agent remains gm top-engine cleaner (P/N 12346535 for US dealers or Canadian P/N 992872). Dealers should not add the cleaning agent to the fuel tank nor exceed the concentration limit of 10 percent. Start your work by acquiring two j 38500-a units along with inspecting the valve located at the canister's base. Us dealers must empty two 24 ml gm top-engine cleaner containers into the j 38500-a but canadian dealers need to fill the unit with 48 ml of the cleaner. A mixture of 96 ml top-engine cleaner joined with 864 ml regular unleaded gasoline serves as the solution when utilizing a different cleaning agent brand. Insert gasoline into the cleaning tank then disable the fuel pump before disconnecting and plugging fuel lines with the correct shutdown adapters in place. Join the j 38500-a to the fuel rail before pumping it to 510 kpa (75 psi) while starting the engine until it stops running. Reinstall the Fuel Pump Relay after you disconnect the j 38500-a followed by connecting fuel lines while allowing the vehicle to idle for another two minutes. Repeats the procedure with theinjector balance test while measuring injector fuel pressure drops with pen and paper for replacements if the measurement shows more than a 15 kpa (2 psi) difference. Each gallon of gasoline should receive an ounce of port Fuel Injector cleaner (GM P/N 12345104 or Canadian P/N 10953467) placed into the fuel tank. You must inform the customer to complete remaining additions at the following fill-up as well as suggest using a different fuel brand every 5000 km (3,000 mi) and using this cleaning agent to maintain injector cleanliness. Verify the customer concern resolution through a road test after performing the vehicle check.