 So what's sort of common, these will start to make noise as they age, the chain stretches, and it will be a random intermittent thing. And one of the items that starts to really fail in this is the variable valve timing control, the actuator. So what you could do is have your mechanic going with a scan tool and look at timing. All right, where's the intake and where's the exhaust cam? You know, is it where it's supposed to be? If it's commanding...