the top of my motor is making a knocking noise what could it be
what could a knocking noise be coming from top of engine
If the knocking is actually coming from the top, likely it's valves. You have hydraulic lifters, so there could be sticking valves and the engine could use a cleaning. Otherwise, the knocking could actually be coming from below: worn bearings. Change the oil, or even add an oil treatment, like Seafoam. If that doesn't quiet it, have a mechanic look at it.