重写bool抽象方法时出错

我不明白为什么在我的派生类中会出现这个错误来覆盖方法布尔

        public class HotRod : Racer
{
    private bool blower = true || false;
    public HotRod();

    public HotRod(string racerName, int racerSpeed, Engine _engine);
    {
        racerName = name;
        racerSpeed = speed;
        Engine = engine;    
    }
    public override bool IsDead()
    {
        Engine engine1 = new Engine();
        Engine = engine1;
        Random rnd = new Random();
        rnd.NextDouble();
        bool dead = false;
        if (racerSpeed > 50 && rnd.NextDouble() > 0.6)
            if (engine1.horsePower < 300 && blower == true)
                dead = false;
            else
                dead = true;
        else if (racerSpeed > 100 && rnd.NextDouble() > 0.4)
            if (engine1.horsePower >= 300 && blower == true)
                dead = true;
            else
                dead = false;
        else
            dead = false;
        return dead;
    }
    public override string ToString()
    {
        string output;
        output = "'n============ HotRod Information ============";
        output += "'n't              Racer's Name:'t" + racerName;
        output += "'n't               Car's Speed:'t" + carSpeed;
        output += "'n't          Engine Cylinders:'t" + engineCylinders;
        output += "'n't         Engine Horsepower:'t" + engineHorsePower;
        output += "n't               Racer's Type:'t" + racerType;
        output += "n't          Racer with Blower:'t" + carBlower;
        output += "n't             Still Working?:'t" + IsDead;
        return output;
    }
}

错误是bool，并显示预期的类、委托、枚举、接口或结构

我能得到这个的任何帮助吗