Nissan 22401-5M014 Spark Plug

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Spark plug replacement requires a spark plug socket and extension that fits onto a ratchet, with the socket lined with a rubber grommet to protect the porcelain insulator and hold the plug during removal. A wire-type feeler gauge is needed to check and adjust the spark plug gap, along with a torque wrench to tighten the new plugs to the specified torque. When replacing plugs, purchase new ones, adjust them to the proper gap, and replace each plug one at a time, inspecting for defects such as cracks in the porcelain insulator. Check the electrode gaps by inserting the wire gauge of the proper thickness between the electrodes; if the gap is incorrect, it is recommended to replace the spark plug rather than adjust it. If the side electrode is not aligned with the center electrode, use the notched adjuster to align them, bending only the base of the ground electrode if adjustment is necessary. For removal, take out the upper intake manifold for access to the rear bank spark plugs and remove the ignition coils. Use a spark plug socket with a ratchet and extension to remove the spark plugs, comparing each old spark plug with a chart to determine the engine's overall running condition. Before installation, apply a coat of anti-seize compound to the plug threads, avoiding the lower threads. To prevent cross-threading, fit a snug-fitting rubber hose over the end of the spark plug, which helps align the plug with the hole and prevents thread damage if cross-threading occurs. Tighten the plug to the specified torque and follow the same procedure for the remaining plugs. After replacing all plugs, install the ignition coils and replace the upper intake manifold.

Typically, the tools needed include a spark plug socket that fits into a ratchet, an assortment of extensions and a gap gauge to check and adjust the gaps on the new plugs. A special tool for removing plug wires aids in separating the wire boots from the spark plugs but is not a must have. To tighten the new plugs, you should use a torque wrench. When it comes to replacing spark plugs, it is best to buy new ones in advance, adjust their gaps properly and replace them individually. When getting new spark plugs ensure you buy the correct plug type for your specific engine. Allow all of the plugs to cool off completely before attempting to remove any of them. Why waiting for your engine to cool down, check for defects on your new spark plugs and adjust their gaps if necessary. Using an appropriate-thickness gauge between the electrodes at the tip of the plug, check and set 1998 model's plug gap. The specified electrode gap should be maintained as per specification. Next, with your engine cooled down somewhat you can take away one spark plug wire from one of them. If there is some compressed air around blowing this into the spark plug hole removes dirt or foreign materials from that area. Place it over plug then turn counter clockwise direction and remove it from motor using a ratchet or screwdriver inserted into this fitting part until when possible just rotate anymore by hand. Consult chart comparing with each other so as to get an idea concerning how well your car's motor is functioning generally speaking in relation its sparkplug's appearance alone; In order for you not to get confused which wire should be connected where repeat this process step-by-step with every following one applying such way after all replacing only one at once only thus avoiding interchanging places between wires while setting up another new part.

It is not recommended by the manufacturer to check the spark plug gap because doing so will remove its platinum or iridium coating which can damage the plugs. For most cases, spark plug replacement tools include a ratchet having a spark plug socket (spark plug sockets are padded inside to protect new plugs' porcelain insulators), and various extensions like a torque wrench, a socket with wrench and an extension. While purchasing new spark plugs, be certain to purchase the right type that matches your engine. Make sure that you let engine cool completely before attempting to remove any of the plugs. However, don't forget to examine new plugs for defects. Remove air intake duct. Take away just one bolt and lift up coil/plug boot assembly after disconnecting electrical connector at ignition coil on one cylinder. Replace one plug at once. If there is compressed air, use it to blow away from the spark plug hole any dirt or other foreign matters that may have settled there in such a way as to eliminate any possible occurrence of debris falling into the cylinder as soon as the spark plug is removed. Put the spark plug socket over the plug and then turn it anti-clockwise removing it from the engine.Loosen up by turning counterclockwise the fastening nut on the top of each tube; compare each spark plug with chart on inside back cover for an idea of general running condition of engine; Observe detailed instructions for their installation given in par 1-11 prior to installing new ones. Before putting in new plugs, apply thin coat of anti-seize compound on threads; Put one of new plugs into hole far enough that you cannot turn it anymore with your fingers, then tighten it using torque wrench or ratchet; Safety tip-I like to put a short length of rubber hose over end of plug; hold hose firmly enough that I can turn without slipping but if starts cross-threading in hole, hose starts slipping rather than damaging threads and paying for their repair. Put the boot back on the new spark plug, twisting it until it seats properly. Repeat this process with remaining spark plugs.

If available, use compressed air to blow away any dirt or foreign material from the spark plug hole to prevent debris from falling into the cylinder.

Thread one of the new plugs into the hole until it can no longer be turned by hand, then tighten it with a torque wrench or ratchet.

Purchase the correct plugs for your vehicle, inspect them for defects (ensuring there are no cracks in the porcelain insulator), and check the electrode gaps using the wire gauge, adjusting as necessary.