Automobile Rockers panel is the lowest body panel on the side of the car located between the two wheelwells. In most cars, only the edge of the rocker panel is visible when the doors are closed since it supports the bottom of the door. TÃ??Ã?Âhe goal of a carburetor is to mix just the right amount of petrol with air so that the engine runs properly. If there is not enough fuel mixed with the air, the engine Ã?¢??runs leanÃ?¢?? and either will not run or potentially damages the engine. If there is too much fuel mixed with the air, the engine Ã?¢??runs richÃ?¢?? and either will not run (it floods), runs very smoky, runs poorly (bogs down, stalls easily), or at the very least wastes fuel. The carb is in charge of getting the mixture just right. The crankshaft, sometimes casually called the crank, is the part of an engine which changes the up and down motion of the pistons into rotation. To convert the motion, the crankshaft has one or more offset shafts. The pistons are connected to the crankshaft by these shafts. When the piston moves up and down, it pushes the offset shaft. This in turn rotates the crankshaft.