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07/08/2021 9:30 am
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hello i have 2008 subaru legacy i changed spark plugs recently to denso and then i had a misfire in cylinder four brought the car to a shop and the mechanic fixed the ignition wire changed the coil, and replaced the plug to ngk, do i need to change all of them to ngk?
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07/08/2021 10:01 am
No. As long as the plugs are the correct heat range specified by the manufacturer, you can use any brand you want. BUT, you need to check the plugs for continuity and resistance before installing them.
