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The function of a camshaft is to open, and close the valves, to allow a fuel/air mixture into the cyclinder, where is it is processed into power. An engine has intake, which allow the mixture into the cylinder, and exhaust valves, which allow the spent mixture, as exhaust, out the tailpipe. An exhaust cam, would be, most likely, on a twin, or dual overhead cam, configuration, where one cam controls the intake valves, and one controls the exhaust. A cam is a shaft with eccentrics on it. These eccentrics have some sort of follower, depending upon the make, that rides along the came eccentric, and opens the valve, when the raised portion of the eccentric rotates around. The raised portion wears down, and becomes flat, thus no longer opening that particular valve, which causes the engine to run bad, which is a common problem, and judging by your question, maybe an issue in your life, currently.
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Where is the camshaft located in a two cycle engine?
A two-stroke engine does not have a cam or camshaft. Seeing there is no intake/exhaust valves it would be pointless to have a camshaft.
How does the camshaft work?
A camshaft opens/closes the intake/exhaust valves at predetermined points of the piston travel. The cam is driven by the crankshaft, the rotating cam lobes operates thru lifters/followers that ride against the lobes.
What is a PO344 code?
P0344 = Camshaft position sensor 'A' circuit intermittant (Bank 1 or single sensor)'A' circuit is intake side. 'B' circuit is exhaust side.
Why does a cam shaft run at half the speed of the crankshaft?
The four strokes of a four-stroke engine are intake, compression, power and exhaust. The crankshaft controls the upward and downward motion of the pistons. The camshaft controls the opening and closing of the intake and exhaust valves. Intake stroke- the intake valve is open and the exhaust valve is closed. The piston moves downward, decreasing the pressure in the cylinder, which draws the fuel-air mixture in through the intake valve. Compression stroke- both the intake valve and the exhaust valve are closed. The piston moves upward, compressing the fuel-air mixture. When the piston nears TDC (top dead center), the fuel-air mixture is ignited by the spark plug. Power stroke- both the intake valve and the exhaust valve are closed. The explosion caused by the ignition of the fuel-air mixture (combustion) forces the piston downward. Exhaust stroke- the intake valve is closed and the exhaust valve is open. The piston moves upward, forcing the gases produced by combustion out of the cylinder through the exhaust valve. So, for each firing of a given cylinder, the intake valve opens once and the exhaust valve opens once. But, for each firing of a given cylinder, the piston must travel downward and then upward twice (in each direction.). Therefore, the crankshaft must rotate twice per given cylinder firing, while the camshaft rotates only once per given cylinder firing.
Is a camshaft position sensor the same as a camshaft actuator?
no
