Other causes of low compression
We've answered the question of “how can bad timing cause low compression?” Here, we will discuss other various reasons why your engine may suffer from low compression:
Valve leakage
The intake and exhaust valves open and close in opposition to one another. However, exposure to high temperatures can cause damage to the valves.
Once the valves are no longer providing the needed closure, there is usually a pressure loss, resulting in low compression or no compression.
The valve that is more susceptible to failure is the exhaust valve as it is usually exposed to high temperatures.
Valves can also fail if the logic system or computer that instructs the valves (intake and exhaust) when to open and close feeds them at the wrong time.
Damaged head gasket
Gaskets aid in the provision of a sealing mechanism, the head gasket does the same thing in an engine.
You can find it between the bottom and top half of the engine. The primary function is to separate the oil from the fuel and air mixture and allow gases to move in and cause combustion in the cylinder.
Worn Piston rings
The rings ensure a proper seal between the piston and cylinder wall. Not just in car engines but in all internal combustion engines, a worn or damaged ring will surely translate to low compression and poor engine performance.
Damaged valve springs
Compression is also lost when the valve springs go bad, valves springs aid the intake of gases and removal of waste gases.
If they go bad the valve can close and gases will be lost, resulting in zero ignition.
Worn out camshaft
This (camshaft) engine component has lobes attached to the valves, triggering the opening and closure of these valves.
The deterioration of the camshaft is sure to happen as much as the engine is kept in use, so take care to service and fix your engine once you notice low compression.
Joses Peter
