It first flared up last september, and when i took it to a shop they told me i. P0304 means cylinder 4 is misfiring — usually a $30 coil or $10 spark plug This is a known issue related to a specific supplier, yumebishi, as.
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In one documented case, a 2015 mazda 3 owner performed a coil and plug swap for a p0304 code, and the misfire did not move from cylinder 4
This would typically rule out the coil and plug.
A forum community dedicated to mazda 3 and all mazda vehicle owners and enthusiasts Come join the discussion about mazdaspeed performance, modifications, classifieds,. Learn how to diagnose and fix the p0304 cylinder 4 misfire error in your mazda3 with expert advice. If your car's ecm throws a p0304 trouble code, you have a misfire problem
Here are common symptoms, causes, and how to fix dtc p0304. All returns to normal after engine restart but there's still a reduction of power and hiccups/hesitation on acceleration (that feels like a misfire which was confirmed by code p0304), and eventual limp mode. Learn what dtc p0304 means, common symptoms, likely causes, diagnostic steps, repair costs, and whether it’s safe to keep driving.
