The engines of yesteryear were pretty simple, with tappets clackity-clacking away on cam lobes, opening valves, and making a ruckus while doing it. Mechanical lifters were adequate for valve operation ...

We may receive a commission on purchases made from links. There are many V6 and V8 engines that use camshafts located within the engine block and pushrods to activate overhead valves. In those engines ...

Why ticking happens: Ticking occurs when a lifter cannot maintain zero lash due to wear, sludge, or poor oil flow, creating a rhythmic tap that follows engine RPM. High‑risk engines: Engines like ...

There are a myriad of components that make engines tick. By which we mean "tick" in the sense of the sound, not what makes them angry. Fuel injectors make a ticking noise as they quickly squirt ...

When it comes to building engines, those equipped with hydraulic roller lifters offer major advantages to budget-conscious car crafters. Starting in 1987 with passenger-car small-blocks, including the ...

At the very least, tearing down, inspecting, and cleaning hydraulic lifters is good engine hygiene that can contribute to long service life in your classic car. It’s also a great way to inspect the ...

In a world without limits, camshaft designers have known for decades what profiles they'd like to grind. But real-world technological limitations-in terms of design feasibility, materials science, and ...

Q: I have a 1996 Ford Ranger that sat for about a year that I would like to fix up. Everything was okay with it before it sat. Now it has a rapping noise that I think is a stuck lifter. I changed the ...