OEM 2007 Cadillac CTS Spark Plug

2007 Cadillac CTS Parts Questions & Experts Answers

• Q: How to replace a spark plug safely and effectively on 2007 Cadillac CTS?

  A: Start by switching off the ignition before removing the Ignition Coil while wearing protective glasses while being careful of potential air pressure. The cleaning procedure for Spark Plug recess areas functions to stop foreign matter from reaching the Cylinder Head and preventing engine damage while avoiding thread contamination. Use a thread chaser to remove any present contamination. It is important to cool down the engine through compressed air cleaning after removing debris from Spark Plug cavities since hot engine Spark Plug removal can cause thread seizure that harms the Cylinder Head. Before installation always use spark plugs from the manufacturer specifications because alternative types either too hot or too cold may cause severe engine damage. Check the gap of all new and reconditioned spark plugs using a round feeler gauge because pre-set gaps will alter during handling and the plug gap must equal the manufacturer's specification. The threading process for spark plugs into the Cylinder Head should be smooth with full seat commitment using thread chasers to prevent overheating, exhaust blow-by, or thread damage. Install the Spark Plug first before tightening it to 20 n.m (15 lb in). Then reinstall the Ignition Coil.