Engine Diagnostics & Tune-Ups

Tune Up Service: Ignition System and Spark Plugs.

Did you know:

The word Tune-up is an outdated and obsolete term. The need for tune-ups went away in the mid-1980s when fuel injection replaced carburetors and conventional spark plugs were replaced with long life platinum spark plugs. Yet many people think their engine still needs a tune-up.

What does a Precision Tune Auto Care Tune Up include?

  • Tune-up verification
  • Replacement of spark plugs
  • Analysis of emission levels
  • Timing/idle speed adjustment (if adjustable)
  • Complete maintenance inspection

Benefits of a Properly Maintained Ignition System

  • Quick starting
  • Increased performance
  • Increased fuel economy
  • Lower emissions
  • Cure specific driveability concern (requires diagnosis, see manager for details)
  • Conserves spark energy for the combustion chamber
  • Regulates spark energy

Ignition System

The ignition system is responsible for producing and transferring the spark energy to the combustion chamber at the correct time.

Ignition Coils

Produce high voltage spark energy sufficient to properly ignite the air/fuel mixture inside the combustion chamber. The On-Board computer or ignition module typically controls ignition coils.

Distributer Cap and Rotor

The distributor cap is the connection point for all sparkplug wires. Distributor type ignitions systems (DI) also have a distributor rotor. The rotor spins inside the cap distributing the spark current to each sparkplug wire. Electronic Ignition (EI) systems do not have distributors, but instead have multiple ignition coils.

Ignition Wires

Provides a conductive path for the spark current from the distributor cap or coil to the spark plugs. Contain the spark energy.

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