Some vehicles equipped with a 4.6L, 3-valve or 5.4L, 3-valve engine may exhibit a ticking and/or knocking noise after reaching normal operating temperature, or may exhibit a rattle upon starting. The noise may also be described as ticks, taps, knocks or thumps. In some cases the noise may be a normal characteristic of these engines. […] Jun 12, 2014 · Your water heater can make different types of noises such as a popping, hammering, ticking, banging, hissing, and or sizzling sounds. There can be many different reasons as to why it is making such strange noises. Whether your water heater is gas or electric, we have some common reasons as to why the noise is occurring and how to stop it for good. These are NOT interchangeable with other cylinders, so make sure everything goes back in it’s correct spot. Visually inspect the lifters, and especially the rollers for deterioration. This will look like small metal chunks missing from the roller. This is most times the problem causing the noise and the misfires. Easily remedied by a set of new lifters.