Timing belts themselves are relatively inexpensive but can easily cause thousands of dollars of damage if they break while the engine is running. Engines come in two configurations: Interference ...

shape and number of the ports and tabulates the average timing-practice of single-sleeve-valve engines. He states that the chief advantages of the single-sleeve-valve engine are sustained operating ...

When a timing belt or chain ... stroke and slam into the open valves. This will likely happen hundreds, if not thousands, of times before you can get the engine turned off, and by that point ...

While the poppet valves work well at low speeds, they are unreliable at high engine speeds, and the “timing,” or opening and closing of the valves, is uncertain. This is the gravest objection ...

The throttle position sensor monitors how far open the throttle valve (or blade ... decide how much fuel is injected into the engine and the spark timing. The TPS is usually mounted on the ...