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Old 07-02-2017, 12:24 PM   #1 (permalink)
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Sparkplugs

2013 Toyota Corolla , has 63117 miles on it. It's been getting crappy mpg lately.
Started to get a misfire randomly code p0300. Changed plugs and coils.
Ceramic is burnt. Trying to attach picture for you guys to see. Electrodes are gray.

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Old 07-02-2017, 01:38 PM   #2 (permalink)
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Found this on line.

What Causes a P0300 Code?
Low Fuel Pressure
Vacuum Leak
EGR system malfunction
Internal Engine Problems (such as low compression)

Less Common Causes
Faulty Coil
Faulty Spark Plugs and/or Wires
Camshaft or Crankshaft sensors
Ignition module
Computer

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