Check the fuel injectors
The second spark plug is misfiring. Could be the coil right above the spark plug.
All the coils are the same, each one must be connected to the connector for the cylinder the coil is connected to the spark plug for
A coil pack can be checked for continuity and resistance with an ohm meter. But for heat or load failure the only way to check a coil pack is to replace it.
what is the max resistance on a 4.7 grand jeep cherokee coil pack
To test a lawn mower coil, you can use a multimeter to check the resistance between the coil's terminals. If the resistance falls within the manufacturer's specified range, the coil is likely functioning properly.
The 2005 Chevy Trailblazer has Coil-On-Plug ignition coils so there are 6 "coil packs". Each one is mounted on top of the spark plug.
Check the ignition control module (autozone) and check coil resistance. After that not sure I have same problem with new icm and new coil.
Check the coil or coil packs if equipped.
you dont. it has coil springs.
To check the ignition coil, first, ensure the engine is off and the key is removed. Disconnect the ignition coil from the spark plug wire and the electrical connector. Use a multimeter to measure the resistance of the primary and secondary windings according to the specifications in your vehicle's service manual; typically, a healthy coil will show low resistance on the primary side and higher resistance on the secondary side. If the readings are outside the recommended range or if there are signs of physical damage, the coil may need to be replaced.
Coil packs can not be checked for heat or load related issues. They can be checked for proper resistance with an ohm meter.