Spark plugs fire in a specific order, and crossing a wire to the wrong plug will make the engine run rough or not at all and can cause damage to your engine. You will need to remove the plugs one at a time, keeping track of the order. If contacts are burnt out, refit the plug and lead to the correct torque setting then go to the auto parts store and get new plugs before removing any more. When checking to see if the plugs need replacing, simply remove one spark plug and check the gap.Fit your socket wrench with the extension bar and use the ratchet to remove the spark plug from its housing slowly and with caution. Don't yank on the wire to pull out of the plug, or you've got a bigger job on your hands and a ruined spark plug lead. Pull the wire plug from the engine by gripping it as closely to the bottom as possible and working it gently and carefully off to reveal the spark plug. At this point, it is good practice to inspect the leads for any damage or cracks as replacement leads may also be required. You should also number the corresponding leads to the cylinder so as not to confuse which lead goes where when replacing with new plugs.
#How to install spark plugs manual#
You should always check your owner's manual and look up where your spark plugs are, how many you have, the correct "gap" and the size socket needed to remove them. Some cars have engine covers you'll have to remove to see the spark plug wires, tracing them back to find the plugs themselves.On V6 and V8-cylinder engines, plugs should be separated evenly on each side of the engine. On an inline 6-cylinder, they are located on the top or side of the engine head.On a 4-cylinder engine, spark plugs will be located on the top or side of the engine in a row.The spark plugs are located at the engine end of these wires, under the plug covers that attach them. X Expert Source Hovig ManouchekianĪuto Repair & Design Specialist Expert Interview. When you open the hood or bonnet of your car, you should see a bundle of 4-8 wires leading to different points on the engine compartment.
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