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Q: Check engine lights and spark plug replacement on 1997 Toyota Paseo

Does the "check engine" light illuminate when the spark plugs need replacing? And how do you repalce the spark plugs?
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Yes, the Check Engine Light can illuminate when the spark plugs are getting too old, it is because the engine will misfire and set misfire a code. Before you just replace the plugs, be SURE that you get the code or codes and find the cause of them, so you don't replace spark plugs when you really just needed a gas cap.
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