Do I Need To Disconnect Battery To Change Spark Plugs. With the engine not running and the computer off the ignition system will not generate the high voltage for the spark plugs and thus you can change them without incident. It helps grip the old plugs as you are removing them and helps prevent damage to the insulating material on the new plugs during installation.
Disconnect the negative battery terminal. No need to disconnect the battery. Open the hood and locate the coil pack near the engine of your car.
Trickle charger did nothing so jump started it.
Suggestions for Improvement Before changing your spark plugs make sure that your cars engine has had enough time to cool down. Trickle charger did nothing so jump started it. No need to disconnect the battery. When your coil starts to fail your first sign is probably a check engine light and a misfire trouble code for a cylinderSince ignition coils supply power to the spark plugs a faulty coil can cause symptoms that may seem spark-plug related so have the code read to narrow down the issue.
