OEM Ford Explorer Sport Trac Spark Plug

Ford Explorer Sport Trac Spark Plug Parts and Q&A

• Spark Plug
  AGSF-22F-MX
  Q: How to inspect a spark plug for issues such as bridged gaps, deposit buildup, oil fouling, carbon fouling, normal burning, preignition, overheating, and fused deposits on Ford Explorer Sport Trac?

  A:

  An inspection of the spark plug includes evaluating the electrode gap through checking for deposits that may obstruct this gap while investigating potential cases of oil or carbon fouling. Cleaning of the spark plug might become necessary. Check the insulator shell bore electrodes for oil fouling indicators showing wet black deposits because of ring and piston wear and examine valve-to-guide clearance and bearing condition for possible oil entry into the chamber. Address any oil leakage problems before installing a new spark plug. Soak the spark plug in a degassing solution then blow it dry and check it for black carbon particles under the tip and shell surface section and electrode ends; clean it if it is fouled with carbon. The inspection for normal burning requires examining the firing tip for light tan or gray deposits. The presence of preignition together with damaged insulators and melted electrodes reveals engine damage from incorrect timing or fuel type or heli-coil installments which require a new spark plug replacement. Engine overheating alongside wrong fuel choice or spark plug looseness or heat range mismatch or reduced fuel supply pressure or timing issues leads to white/light gray electrode spots and blue-burnt electrode appearance that demandsSpark plug replacement. To diagnose fused deposits inspect the spark plug because they appear as bubbled or blistered spots from sudden acceleration while cleaning need to be performed as necessary.