Mazda has no idle speed after overhaul of cylinder 3.

Hello, your car has not been idle since the overhaul. Is the valve on the automobile cylinder head automatically adjusted or manually adjusted? If the gasket is adjusted, it may be that your valve clearance is not adjusted properly. I hope I can help you. I can have a look first and measure the gap. If there is something wrong with the car, ask the car master. 4S shop professional technician, 10 minutes to solve.