OEM Ford Crown Victoria Spark Plug

Ford Crown Victoria Spark Plug Parts and Q&A

• Spark Plug
  AGSF-32P-MX
  Q: How to inspect a spark plug for issues such as bridged gaps, deposit buildup, oil or carbon fouling, and signs of overheating on Ford Crown Victoria?

  A:

  An inspection of the spark plug must check for a bridged gap along with the identification of deposit buildups that would close the electrode gap due to oil or carbon fouling. Check the cleanability of the spark plug when deposits are observed. Check the spark plug for oil fouling by identifying wet black deposits on the insulator shell bore electrodes since excessive oil entries result from worn rings and Pistons or excessive valve-to-guide clearance or worn or loose bearings and immediate resolution of oil leakage with new spark plug installation. Black dry fluffy carbon deposits on insulator tips as well as exposed shell surfaces and electrodes necessitate spark plug cleaning because these signs indicate incorrect heat range or soiled air cleaner or too much fuel or too much engine idling time. The inspection for normal burning should identify light tan or gray deposits found on the spark plug firing tip. Engine damage becomes evident when melted electrodes along with damaged insulator surfaces show metallic deposits that may stem from untimely ignition timing and wrong fuel selection or heli-coil installation by unauthorized personnel. Therefore, new spark plug installation becomes necessary. Spark plug replacement is needed if white or light gray spots or a bluish-burnt appearance of the electrodes is detected because overheating might result from engine overheating or the wrong fuel type or loose parts or incorrect heat range plugs or low fuel pressure or off-time ignition settings. The presence of fused deposits should be checked since these melted spotty deposits that look like bubbles or blisters usually form during sudden acceleration but you should clean the spark plug when these deposits exist.
• Spark Plug
  AGSF-22F-M1X
  Q: How to service and repair a spark plug on Ford Crown Victoria?

  A:

  Start by removing the Ignition Coil and then extract the spark plugs from the engine while cleaning the spark plug well using compressed air. Check for a bridged gap along with deposit build-up caused by oil or carbon fouling on spark plugs before cleaning them will be needed. Examine the insulator shell bore electrodes for oil fouling through black wet deposits because excessive oil entering the combustion chamber occurs due to ring or Piston wear or excessive valve-to-guide clearance or insufficient bearing health; solve any oil leaks and replace the spark plug if necessary. Illuminating carbon deposits from incorrect heat range or dirty air cleaner or excessive idling or rich fuel mixtures can indicate carbon fouling; clean the spark plug if carbon deposits are present. In normal burning conditions one should inspect for light tan or gray deposits on the firing tip of the spark plug while pre-ignition issues can be detected by melted electrodes and possible insulator damage that may result from wrong ignition timing and fuel type or improper heli-coil installation. The presence of small black or gray-brown spots combined with bluish-burnt electrodes and a white or light gray insulator indicates overheating which can stem from engine overheating, wrong fuel type, loose spark plugs, incorrect heat range or low Fuel Pump pressure or incorrect ignition timing thus requiring replacement of the spark plug. The last step in the inspection involves checking for spot deposits that look like bubbles or blisters at the spark plug because it experienced sudden acceleration. If these deposits are present, clean the spark plug. To install the spark plugs correctly you should follow the steps in reverse order to installation. After making any gap adjustments you need to complete the spark plug installation.