It happened once. After cranking up the first time for at least 5 seconds, the engine didn't start. The second time we did it, the engine started, but it sounded unusually subdued and it almost felt like it was gonna die again. The car goes normally and there's no problem of the engine dying on idle, but now and again we get the subdued startup problems. Anyone has any idea why it's like that, or is it just a normal occurence?