What happens if valve timing is incorrect?

If the timing is incorrect but not incorrect enough to break the valves/pistons then all sorts of ignition problems occur with possible combustion dama… , former Sailor, Stagehand, and Hero of My Own Narrative. It could be very bad things. Valves hitting pistons will harm both the valve and the piston.

How does valve Timing affect engine performance?

In engines where the exhaust system is fairly active (i.e. Pressure waves are generated by exhaust gas flow from the different cylinders), the timing of EVC influences whether pressure waves in the exhaust are acting to draw gas out of the cylinder or push gas back into the cylinder.

What are the problems that occur in vehicles if the valve timings are wrongly adjusted?

The most serious result of incorrect valve lash adjustment is damage to the valves and related components. Setting the clearances loosely causes parts of the valve mechanism to hammer together, damaging valves and creating a knocking or rattling sound.

What is the advantage of valve overlap?

Valve overlap is designed into the engine and is most useful at higher speeds. At higher speeds, the extra amount of intake charge brought into the combustion chamber provides a substantial increase in available power. The amount of time that both valves are open in directly related to engine rpm.

Do valves get tighter or looser?

Valves almost always get tighter.

Will a valve adjustment increase compression?

No. A compression test is used to measure the sealing in the cylinder, both through the valves and the rings. You cannot confer anything through a compression test as to the adjustment of the valves, because it doesn’t relate to that.

What happens if your timing is too advanced?

Overheating. If ignition timing is too far advanced, it will cause the fuel-and-air mixture to ignite too early in the combustion cycle. This can cause the amount of heat generated by the combustion process to increase and lead to overheating of the engine.