Ford AGSF-32P-MX
Spark Plug

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.

Begin testing spark plugs by disconnecting wires from the spark plugs before pulling out the spark plugs. Clear the spark plug well by blowing compressed air before taking out the spark plugs. Normal operating procedure requires using a previously installed original spark plug only in the cylinder it came from but fresh spark plugs may be added to any cylinder. The service begins with spark plug wire removal after which you should inspect the plugs before using a suitable tool to measure and adjust the spark plug gap appropriately. Perform the opposite steps for spark plug installation after completion of removal.

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.

The service process starts with igniting coil removal followed by spark plug extraction where compressed air should be used to clear dirt from spark plug wells. The inspection of spark plugs should evaluate their electrode gap and analyze excessive deposits that could obstruct the electrode passage to determine if cleaning is needed. Check for oil fouling by examining the insulator shell bore electrodes for black wet deposits since this indicates oil intrusion into the combustion chamber caused by ring and piston wear or valve-to-guide clearance issues or worn or loose bearings. Resolve all oil leak conditions before installing a new spark plug. To evaluate carbon fouling examine black dry fluffy carbon accumulations on insulator tips and exposed shell surfaces and electrodes because this condition develops from improper heat range selection or polluted air filters or fuel mixtures or prolonged engine idling; cleaning the spark plug should follow if needed. Normal spark plug functioning can be checked by examining the firing tip for light tan or gray residue while pre-ignition diagnosis should include analyses of melted electrodes and possible insulator harm that might result from incorrect timing, improper fuel choice, or using a heli-coil thread replacement instead of the original plug requiring plug replacement. The combination of engine overheating with wrong fuel type or loose spark plugs or incorrect heat range spark plugs or low fuel pump pressure or improper ignition timing will show as white or light gray-brown spots and a bluish-burnt appearance of the electrodes that require the replacement of the spark plug. All fused deposits should be inspected for bubble or blister forms caused by fast acceleration; cleaning the spark plug might be necessary. End the plug installation by first checking then adjusting the spark plug gap before proceeding with the reverse removal steps.

Clean the spark plug as needed.

Begin by removing the components in the specified order.

Incorrect ignition timing, the wrong type of fuel, or unauthorized installation of a hell-coil insert in place of the spark plug threads.

Clean the spark plug if necessary.

Inspect them and install new ones as necessary.

Any oil leak concerns.

First, remove the ignition coil on the plug and then take out the spark plugs, using compressed air to clear any debris from the spark plug well beforehand.

Melted electrodes and possibly damaged insulators, with metallic deposits suggesting engine damage.

Inspect the spark plugs for any damage or wear.

Use compressed air to clear any debris from the spark plug well.

Inspect the spark plugs for any damage or wear.

Inspect them thoroughly.

Adjust the spark plug gap as necessary.

Reverse the removal procedure and adjust the spark plug gap as necessary.

Use compressed air to clear any foreign material from the spark plug well.