Masbro7 - Engine oil rises to wet the motor spark plug, is that risky?
Definitely yes if the condition causes the oil volume to drop to an extreme. As a result, from very mild engine power to very severe, the piston can be locked due to lack of lubricant.
This is because the oil that reaches the spark plug will also be burned during the combustion process. So that the volume of oil gradually less.
The burning will leave a dark crust on the spark plug and if the oil leak is bad enough, the spark plug will also be wet with oil.
Then what are the things that cause oil to leak to the spark plugs and what is the solution? follow fully below.
The cause of the oil getting into the spark plugs
Oil can get into the spark plugs can be caused by the following things.
1. Valve seal is leaking/damaged
The oil in the engine, not only lubricates the crank section, but engine oil is also supplied to the cylinder head to lubricate the valve mechanism parts.
At the valve, there is a rubber seal that is useful for preventing oil from the cylinder head from entering the manifold, because the manifold is directly connected to the combustion chamber so that when there is a leak in this seal, oil enters the combustion chamber area.
Inside the combustion chamber, oil will coat all surfaces of the combustion chamber including the spark plugs. And when the spark plug turns on automatically the oil is also burned, the rest of the combustion can be in the form of white smoke coming out of the exhaust.
2. Worn piston rings
The next condition that also has the potential to cause oil to rise into the combustion chamber is due to piston ring wear. On a piston there are at least 3 piston rings which are used to close the gap between the piston and the cylinder so that the compression pressure can be optimal and the oil is always comfortable.
We know that in order for the engine to turn around quickly, the piston must move freely without hindrance. So the piston diameter is made smaller than the cylinder diameter.
To close the gap, 3 rings are placed in the form of a kind of ring that has a gap. Universally, the diameter of the piston ring is larger than the diameter of the cylinder but the piston ring is elastic. So that when inserted, the piston ring can enter and close the piston gap.
However, because it continues to be scratched, the piston rings can wear out. When the piston ring is worn, the gap in the piston ring will continue to widen so that compression pressure can leak and oil can enter the combustion chamber.
To identify what are the characteristics of piston rings that are starting to wear out, you can read the identity of the engine piston rings starting to wear out.
3. Worn cylinder
Apart from the piston rings, the cylinder chambers can also wear out. This occurs when the material from the ring is stronger than the engine block. The process is the same, that is, when the engine block wears out, its diameter continues to widen so that the compression pressure drops and oil can enter easily.
For these 2 causes, there are usually other indications that follow, namely the engine being difficult to start and the motor power dropping.
4. Gasket is leaking/damaged
In engines, gaskets have several uses. Not only to avoid the formation of compression leaks, gaskets also play a role in preventing oil from coming out of its path.
The oil path from the block to the cylinder head must be given a seal such as a gasket so that when the oil circulates, the oil does not flow into the combustion chamber.
However, when the gasket is damaged, oil can flow into the damaged area and enter the combustion chamber. So that the potential is in the spark plugs that are smeared with oil.