Oldsmobile 19302741 Spark Plug Asm

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To avoid misplacing the wires, after opening the hood, start by labeling each spark plug wire to ensure you place them correctly during the reinstallation of new spark plugs. Several tools are needed to do this job such as a spark plug socket with a padded interior to prevent porcelain insulators of new plugs from being damaged, pipe extensions of various dimensions, gap gauge for checking and adjusting plug gaps and a torque wrench used in tightening the new plugs. It is advisable to purchase new spark plugs ahead of time with set gaps that can be adjusted to meet specifications as well as replacing them one at a time. You should give your engine enough time to cool before removing any plugs, during this period scrutinize the new plugs for faults and adjust their gaps if needed. Checking the gap will entail using a wire-type gauge to make sure that there is a slight drag when sliding it between electrodes so that it matches up with the emissions control information label specified gap. This adjustment is done by bending slightly side electrode without breaking off or damaging porcelain insulation. When engine is cold remove one spark plug wire from one plug using preferably plug wire removal tool blow clean any dirt or debris around the spark plug hole through compressed air or bicycle pump so as not to contaminate it. Use a Spark plug socket with a short handle in order to unscrew the plug counter clockwise. Examine removed plug for signs of how the engine has been running since it was last replaced. Insert one of the new plugs into the hole screw it in finger tight then finally use torque wrench or ratchet on it. Rubber hose should be used threaded for threading instead cross-threading taking place.Threaded rubber hose can be used to thread into, preventing cross threading.Before connecting wire from a hot ignition coil onto another spark-plug check out whether there are any defects in those wires and finally repeat such operation regarding remaining spark-plugs; replace each one individually so as not mix up the wires.

It's best to buy the new plugs in advance, adjust them to the proper gap, and replace them one at a time. Make sure to get the correct plug type for your engine, which can be found on the Emission Control Information label under the hood. Allow the engine to cool completely before removing any plugs.

Thread the new spark plug into the hole and tighten it with a torque wrench or ratchet.

Thread the new spark plug into the hole and tighten it with a torque wrench or ratchet.

Remove the spark plug wire from one plug by pulling only on the boot at the end of the wire.