OEM 2006 Ford F-250 Super Duty Spark Plug

2006 Ford F-250 Super Duty Spark Plug Parts Questions & Experts Answers

• Q: How to inspect a spark plug for issues such as bridged gaps, deposit build-up, oil fouling, carbon fouling, normal burning, pre-ignition, overheating, and fused deposits on 2006 Ford F-250 Super Duty?

  A: A check of the spark plug must identify a bridged gap while inspecting for deposit build-up that blocks electrode spacing because of oil or carbon fouling. The technician should clean the spark plug if current inspection reveals it requires it. Verify oil fouling through black wet deposits on the spark plug insulator shell which stems from excessive oil penetration into the chamber because of worn rings or pistons or raised valve-to-guide clearances or damaged or loose bearings. Resolve all oil leakage issues before installing the new spark plug. Examine the insulator tips and shell surfaces along with electrodes for black carbon deposits that indicate inappropriate heat ranges or pollution from the air cleaner or fuel mixture or prolonged idling. Clean the spark plug in case such carbon deposits are detected. The inspection for normal burning should reveal light tan or gray residue on the firing tip. Install a new spark plug in case pre-ignition occurs since it leaves melted electrodes and damaged insulators with metallic deposits that stem from incorrect ignition timing or the wrong fuel type or unauthorized hell-coil installation as spark plug thread replacement. An inspection for overheating includes examining white or light gray spots together with a bluish-burnt appearance of electrodes. Such conditions stem from engine overheating, applying the wrong fuel, loose spark plugs, improper spark plug heat range or insufficient fuel pump pressure and incorrect ignition timing that requires a new spark plug installation. The last step involves examining fused deposits which are represented by melted or spotty deposits that take the form of blisters or bubbles generated from sudden acceleration but require spark plug cleaning when present.