Close
<144> × 152

Platinum/Iridium Spark Plug

The spark plug uses the energy produced by the ignition coil to generate the spark necessary to ignite the air/fuel mixture in the combustion chamber. The platinum/iridium spark plug uses harder metals on the electrodes, which increases their life to over 100,000 miles in most applications.

Symptoms of a Bad or Failing Platinum/Iridium Spark Plug

  • Check Engine Light may come on or blink
  • Engine may run roughly
  • Abnormal engine noise due to loose or missing spark plug

Platinum/Iridium Spark Plug Related Repair Advice

  • Failing spark plugs can cause the engine to run rough and misfire, which can trigger the Check Engine Light. Continuing to drive under these conditions can damage the catalytic converter.
  • Engines may have one or two spark plugs per cylinder and each spark plug can have from one to four electrodes
  • Replacing spark plugs can be labor intensive on some late model vehicles
  • To prevent ignition misfires and Check Engine Light problems, we recommend using only high-quality spark plugs, and preferably spark plugs from the OEM
  • Spark plugs have different ratings and it's important that the correct type are used
  • Spark plug terminals wear down over time and can lead to engine misfires. At a minimum, they need to be replaced at the mileage specified by the vehicle manufacturer.
  • Manufacturer's instructions should be followed when removing spark plugs. Cylinder heads made from aluminum can be damaged if the correct procedures are not followed.

0 User Comments

Sign in to comment
Why RepairPal?

Asset 71
High Quality Repairs
Your auto repair done right, only the work you need with no add ons.
Asset 72
Never Overpay
Our free estimator calculates a custom price for your vehicle repair.
Asset 73
Guaranteed Repairs
Rest easy knowing you're covered by our RepairPal Nationwide Warranty.