- Install data scanner and engine analyzer. Run tests on the fuel, ignition, and computer control systems. Retrieve fault codes from the processors memory. Codes exist in the system for P0301 cylinder misfire number 1. Perform all necessary pin point tests checking the wiring, grounds, relays, and related circuit components to isolate the problem to the spark plugs are worn, there is some oil and grease on the spark plugs and ignition coil. Start with replacing the plugs and cylinder 1 coil.
- Clean the debris from the engines lower intake, and remove all ignition coil assemblies and spark plugs. Run thread chaser through the cylinder head to remove debris and clean the spark plug hole threads. Clean and tighten the coil terminal connections, and check the weather seals to prevent moisture intrusion. Set the gap of the new plugs to the manufacturers specification and apply anti-seize compound to plug threads. Install the spark plugs and torque to specification. Reinstall the vehicles ignition coils and install the coil connections using dielectric grease. Reinstall any previously removed vacuum, emissions, fuel, and electrical harnesses. Reinstall all ancillary engine brackets, and torque all components to the manufacturers specification. Base idle adjustment is included where applicable. Install data scanner and run engine to operating temperature to verify that all computer controls are operating within parameters. Road test vehicle and verify static ignition timing and applicable fluid levels.
Robert R. gave our service a 5 star review on 10/4/2023