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How to Change Spark Plugs

Watch more How to Take Care of Your Car videos: Subscribe to Howcast's YouTube Channel - Change spark plugs yourself with these step-by-step directions. Howcast uploads the highest quality how-to videos daily! Be sure to check out our playlists for guides that interest you: Subscribe to Howcast's other YouTube Channels: Howcast Health Channel - Howcast Video Games Channel - Howcast Tech Channel - Howcast Food Channel - Howcast Arts & Recreation Channel - Howcast Sports & Fitness Channel - Howcast Personal Care & Style Channel - Howcast empowers people with engaging, useful how-to information wherever, whenever they need to know how. Emphasizing high-quality instructional videos, Howcast brings you experts who provide accurate information in easy-to-follow tutorials on everything from makeup, hairstyling, nail art design, and soccer to parkour, skateboarding, dancing, kissing, and much, much more. Step 1: Let car cool down Park your car and wait for it to cool down. This may take a few hours, since the spark plugs are among the hottest parts of your engine. Step 2: Locate spark plugs Pop open the hood and locate your spark plugs by referring to your owner's manual. Step 3: Remove one spark plug Remove one spark plug wire from the end of the row by pulling its boot, or the little cap where it connects to the engine -- not by yanking on the wire itself. Tip You can also use a spark plug wire puller to easily detach the wire. Step 4: Attach spark plug to socket wrench Attach the spark plug socket to the socket wrench. You may need to use a swivel joint and/or a socket wrench extension to reach the spark plug. Step 5: Remove spark plug Remove the spark plug by turning the socket wrench counterclockwise. Step 6: Make sure hole's clean Make sure that the spark plug hole is clean. If necessary, use a rag and rubbing alcohol or compressed air to clean the spark plug hole. Step 7: Install new spark plug Carefully install a new spark plug into the empty hole and tighten it by hand. Step 8: Secure new spark plug Use the socket wrench to secure the new spark plug in place. Step 9: Reconnect spark plug wire Reconnect the spark plug wire onto the new spark plug. Tip Changing your spark plugs one at a time prevents incorrect installation that can affect the car's timing and engine performance. Step 10: Move on to next spark plug When you have successfully changed a spark plug, move on to the next one until you have finished installing all new plugs. Did You Know? Diesel engines don't use spark plugs.
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