I have a ticking noise coming from the engine. You can here it coming from the passenger side real good. At first we thought it might be from the exhaust but now they think it might be the roller rockers. Has anyone had this similar experience?

 

What have you done visually to find or isolate the ticking noise under the hood? Does it happen at normal idle speed in Park or only when you are driving it gear?

 

This sound is at all times. I took the valve cover off and there was two lifters that were barely shooting out any oil so I replaced the lifters on the passenger head. Its still making the sound. I heard to check the spark plugs next which i am going to do.