Sure thing, let’s pull the engine out of its case, check the valve gear and make sure the rocker arm’s pivot isn’t drifting. Even a millimeter of mis‑timing can throw the whole cycle off, so we’ll set up a quick dial test and see if the inlet and exhaust valves hit their marks at the correct crank angles. Once we get the timing nailed down, you’ll see that efficiency jump back up. Let’s get to it.