P0303 Mazda -i have this code reading on my cx-7 and my car will run for hot

Question

about 30 minutes into the drive the engine will start shaking and the engine temperature guage will quickly rise to hot. Any idea where this action falls under in possibilities?

Answer 1

Hi there,

This sounds like a possible issue with the cylinder head gasket. I would check  cylinder #3 by doing a leak down test and looking for a loss of pressure and air going into the radiator.