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BigBob
BigBob, Shop manager/technician
Category: Chevy
Satisfied Customers: 4838
Experience:  Shop Manager with 25 years experience
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I have a impala 2003 3.8 and Im want to change the spark plugs.

Customer Question

I have a impala 2003 3.8 and I'm want to change the spark plugs. Any images or help.
Submitted: 8 years ago.
Category: Chevy
Expert:  BigBob replied 8 years ago.
Greetings,

TOOLS REQUIRED
J 38491 Spark Plug Boot Removal Tool

REMOVAL PROCEDURE

1. Remove the fuel injector sight shield
graphic
Remove the spark plug wires (2, 4, 6) from the spark plugs at the rear of the engine using the following steps:
2.1. Note the position of the spark plug wires before removing the wires.
2.2. Twist the spark plug boot 1/2 turn before removing the boot.
2.3. Gently pry the heat shield up from spark plugs using the J 38491.
2.4. Remove the spark plug wire from the spark plugs at rear of the engine.

graphic
Remove the spark plug wires (1, 3, 5) from the spark plugs at the front of the engine using the following steps:
3.1. Note the position of the spark plug wires before removing the wires.
3.2. Twist the spark plug boot 1/2 turn before removing the boot.
3.3. Gently pry the heat shield up from spark plugs using the J 38491.
3.4. Remove the spark plug wires form the spark plugs at the front of the engine.

  1. Remove the spark plugs from the engine.

INSTALLATION PROCEDURE

  1. Measure the spark plug gap on the spark plugs to be installed. Compare the measurement to the gap specifications. Refer to ignition system Specifications. Correct as necessary.graphic
  2. Reverse everything else for rest of installation

let me know if I can help further.

Good luck,
Bob