Most vehicles have ignition systems and a throttle bore. The vehicle's ignition system is the component that ignites the fuel air mixture inside the combustion chamber. When an ignition system fails, it can cause various symptoms such as stalling, rough engine under power, service engine light (check engine) and complete engine shut down. Be sure to keep your vehicle's engine and fuel system clean to assure the proper operation of your vehicle. The step by step instruction below is characteristic of today's ignition and air intake systems. Most vehicles today need a tune up every 35,000 to 65,000 miles depending on driving conditions. Before starting determine which tune up parts are needed. Inspect the particular system on your car or truck then purchase the appropriate parts to complete the job.
READ COMPLETELY BEFORE STARTING!
Step 1 - Identify Throttle Bore (air intake plate and bore)
Most vehicles have an air intake system that will become clogged with air contaminants that the air filter cannot keep out of the system. This condition is called "coking" and can cause stalling as well as variable idle condition and poor mileage. The throttle bore in this illustration has been cleaned for visual purposes. Usually the throttle bore and plate are coated with a dark light tar that needs to be cleaned with every tune up.
Step 2 - Cleaning the Throttle Bore and Throttle Plate (air intake plate and bore)
Step 3 - Identify Tune Up Components
Step 4 - Remove Plug Wire Retainer Guide
Step 5 - Remove Plug Wires
Step 6 - Matching to Replace Plug Wires
Step 7 - Remove Spark Plug
Step 8 - Replace Spark Plug