the intake valve head is larger than the exhaust valve head
On most engines including the 22r/22re the intake valve is bigger than the exhaust.peace
I am assuming you are referring to port valves. Exhaust and intake valves are the most common names.
Valve timing overlap is the time when both exhaust and intake valves are open most engines with catalytic converters require valve overlap in order to send a small amount of raw fuel/ air mix to the converter's. An "open cam" has valve overlap a "closed" cam does not
yes
PCV valves (Positive Crank Ventilation) are usually located on the valve cover of most motors, a few are located on the backside of the motor where the intake manifold bolts to the head.
Most gasoline engines are four stroke engines which is also known as the Otto Cycle. 1) Intake 2) Compresson 3) Ignition 4) Exhaust (four strokes)
The PCV valve will normally be located on the valve cover of most engine's. You will see a large hose connected to the valve inserted in a rubber gromet. This will be running from the valve cover to the intake box or intake manifold.
A bad PCV valve can cause the engine to smoke. The valve is easy to change in most engines to correct the problem.
A leaking spark plug wire can cause a backfire out of the intake, but the most common cause is a burned intake valve. A burnt intake valve will allow leakage during the compression stroke back through the intake causing a popping backfire out of the intake manifold.
Closed
Most golf carts are electric, not gasoline engines, but the ones that have engines (like a lawn mower) will run normally without a filter, for a short time. But as soon as dirt builds up in the carburetor or intake valve, it will require serious cleaning.
Most gasoline engines are four stroke engines which is also known as the Otto Cycle. 1) Intake 2) Compresson 3) Ignition 4) Exhaust (four strokes)