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What do you do after changing spark plugs?
I just changed my spark plugs, but I want to check and make sure I did the job right. Can you tell me what to do after changing spark plugs?
Natalie Todoroff · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
Well done on taking the initiative to handle the repair yourself! After you’ve changed your spark plugs, you should start up your engine to make sure they’re working as they should. If your engine starts up without a hitch, you can pat yourself on the back for a job done right.
If your engine doesn’t start, it’s probably time to consult a
mechanic
. Done wrong, a spark plug replacement can completely fry your engine and lead to more costly repairs. Your engine may start up just fine but throw an
error code
on your dashboard. In that case, grab your OBD reader
to diagnose the issue. If the check engine light flashes repeatedly while your car is on, that indicates a cylinder misfire—meaning you should shut the engine off, go back in, and check your work. Handling minor engine repairs is a great way to save on those hefty mechanic bills. Another great way to save on your car’s expenses is to download
Jerry
, the super app
for car insurance
. Signup takes less 45 seconds, and Jerry can even help you cancel your old policy once you find a new one you like—hopefully one that saves you $800+ a year without skimping on coverage, which is the average savings with Jerry.
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Jerry partners with more than 50 insurance companies, but our content is independently researched, written, and fact-checked by our team of editors and agents. We aren’t paid for reviews or other content.
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