That's crazy, you'd think it would loose compression. craziest thing I've seen in this regard. A friend of mine, who is a little poor, got a Ford Aerostar V6 minivan. one of the plugs on it was stripped, in stead of trying to repair it, someone too a very large bolt and force threaded into the hole to close it up. The van just ran on 5 cylinders, while sending fuel to all 6 and got terrible gas mileage.