OEM 2002 Lincoln LS Spark Plug

2002 Lincoln LS Spark Plug Parts Questions & Experts Answers

• Q: How to service and repair a spark plug on 2002 Lincoln LS?

  A: Service and repair operations for spark plugs start with the removal of ignition coil followed by spark plugs removal. Clearing the spark plug well from foreign material should be done with compressed air before removing the plug. Examine spark plugs for gap bridging as well as check for deposits that could close the gap between electrodes because of oil or carbon contamination. When required clean the spark plug. Verify for oil fouling on the insulator by examining black wet deposits on both electrodes because it stems from excessive oil entry due to ring and piston wear as well as guide or bearing wear so service rule an oil leak search follows new spark plug installation. Carbon fouling can be detected on insulator tips and exposed shell surfaces and electrodes through black, dry, fluffy deposits. This condition arises when using the wrong heat range spark plug or having a dirty air cleaner or too rich fuel mixture or from prolonged idling; cleaning the spark plug becomes necessary. Normal burning shows itself when the firing tip produces either light tan or gray residue. Engine damage is indicated by metallic deposits along with melted electrodes and damaged insulator during pre-ignition inspections; wrong fuel choice and heli-coil thread material replacement require new spark plug installation. If overheating occurs from any combination of incorrect fuel type, loose spark plugs, engine overheating, wrong spark plug heat range or failing fuel pressure and improper ignition timing you should replace the faulty spark plug. Inspection reveals overheating through a light gray or white insulator and scattered black or gray-brown or bluish-burnt electrode marks. If you discover fused spot deposits appearing as bubbles or blisters from rapid acceleration then the spark plug requires cleaning. After adjusting the spark plug gap, the installation will be finished using the reverse method of removal.