OEM 2008 Cadillac XLR Spark Plug

2008 Cadillac XLR Parts Questions & Experts Answers

• Q: How to Properly Replace a Spark Plug on 2008 Cadillac XLR?

  A: The starting point for Spark Plug replacement should begin with shutting off vehicle ignition as the technician removes Ignition Coil assemblies from bank 1 and bank 2. The process of Spark Plug removal requires engine temperature to reduce to room temperature due to potential thread seizure that could harm Cylinder Head threads. The Spark Plug recess area requires cleaning before starting to prevent dirt and foreign objects from damaging Cylinder Head threads. Thread chaser tools should remove any possible contaminants. Check spark plugs on the engine before inspection. Cars require specialized spark plugs according to their specifications because incorrect plugs of higher or lower heat result in substantial engine harm. A round feeler gauge must measure the gap on all new and reconditioned spark plugs to verify correctness with specifications. Insert the Spark Plug thread into the Cylinder Head until it reaches the complete seating position and perform a thread cleaning process with a thread chaser when needed. Insert the spark plugs while torquing them to 15 n.m (11 lb ft) before putting back the Ignition Coil assemblies into bank 1 and bank 2.