You've probably heard about the choke valve in your car engine's carburetor, but what does this seemingly essential component ...

When the crankcase pressure rises, the piston moves, allowing the crankcase gasses to flow into the intake ... Inspect the ...

Starting with the piston at the top of the cylinder, the crankshaft's rotation pulls it down as the intake valve opens to allow the air-fuel mixture ... to allow the flow of gases through the ...