Insert New Spark Plug Step 17 - Next, gently lower the spark plug down in to the plug well. This is an important step because if the plug is bounced, or dropped, it can close the plug gap or damage the plug causing a misfire or poor performance.
Insert Spark Plug Into Plug Well Step 18 - Once successfully lowered into the plug well and rolled in by hand, attach a ratchet and tighten the plug. The tighten specification can vary, but a general rule of thumb is to crush the sealing ring about half way.
Tighten Spark Plug
Reinstall Ignition Coil Step 20 - Then, install the coil mounting bolt and tighten.
Tighten Coil Mounting Bolt