How and how important it is to measure valve clearance!
Posted: Thu Jan 23, 2025 8:48 am
Everyone knows that the engine is the vital component for the operation of the vehicle, responsible for generating force for the wheels and, consequently, keeping it moving.
It is not new that there are several internal components in the engine, such as: pistons, cylinder liners, guides, seats, camshaft, valve springs, tappets, rocker arms and valves. All of them, the Engine Expert can find in our catalogue .
But today we are only going to talk about the intake and finland phone number list valves. We are going to understand how they work, how to measure in case of engine valve clearance and the importance of always performing this measurement.
Function of the valve in the engine
The valves, as well as the other components of the assembly, play an important role in the functioning of the entire engine. They are responsible for controlling the entry and exit of gases from inside the cylinders.
In a combustion engine, two types of valves are required: intake valves and exhaust valves.
In a four-stroke engine, the intake valves are responsible for the entry of fuel and air into the cylinder, while the exhaust valves are responsible for separating the fuel combustion gases from the cylinder.
The components connected to the valves are made up of the well-known valve train , which you can learn more about in this other publication.
Why should valve clearance be measured?
The importance of having precise timing of valve openings is essential for engine operation. It is important to check valve clearance and/or calibration to avoid noise, loss of power and, of course, fuel consumption and excessive emission of pollutants.
Through these symptoms, the Engine Expert will be able to identify the valve timing problem.
How to measure valve clearance?
First of all, it is important to know whether or not the engine requires periodic adjustment of these valves.
NEVER use assumptions! Consult the manufacturer!
If measurement is necessary, the first step is to know the conditions required to perform the adjustment (cold or hot engine), the tools needed (some models require special devices), the procedure to perform the service, as well as the clearance specifications.
This information can be found in the vehicle's service manual.
IMPORTANT POINT: It will be pointless to perform the fine-tuning procedure without first checking the valve clearances when it is adjustable. Despite all the work on checking and adjusting the power and ignition systems, they may not have the desired effect, which causes the above-mentioned problems to remain.
The engine expert must also give importance to other mechanical checks, such as: measurement of the depression of the intake manifold, measurement of the working temperature of the engine, verification of the tightness of the combustion chambers, verification of the quality of the fuel used, presence of false air intake in the intake ducts, etc.
It is not new that there are several internal components in the engine, such as: pistons, cylinder liners, guides, seats, camshaft, valve springs, tappets, rocker arms and valves. All of them, the Engine Expert can find in our catalogue .
But today we are only going to talk about the intake and finland phone number list valves. We are going to understand how they work, how to measure in case of engine valve clearance and the importance of always performing this measurement.
Function of the valve in the engine
The valves, as well as the other components of the assembly, play an important role in the functioning of the entire engine. They are responsible for controlling the entry and exit of gases from inside the cylinders.
In a combustion engine, two types of valves are required: intake valves and exhaust valves.
In a four-stroke engine, the intake valves are responsible for the entry of fuel and air into the cylinder, while the exhaust valves are responsible for separating the fuel combustion gases from the cylinder.
The components connected to the valves are made up of the well-known valve train , which you can learn more about in this other publication.
Why should valve clearance be measured?
The importance of having precise timing of valve openings is essential for engine operation. It is important to check valve clearance and/or calibration to avoid noise, loss of power and, of course, fuel consumption and excessive emission of pollutants.
Through these symptoms, the Engine Expert will be able to identify the valve timing problem.
How to measure valve clearance?
First of all, it is important to know whether or not the engine requires periodic adjustment of these valves.
NEVER use assumptions! Consult the manufacturer!
If measurement is necessary, the first step is to know the conditions required to perform the adjustment (cold or hot engine), the tools needed (some models require special devices), the procedure to perform the service, as well as the clearance specifications.
This information can be found in the vehicle's service manual.
IMPORTANT POINT: It will be pointless to perform the fine-tuning procedure without first checking the valve clearances when it is adjustable. Despite all the work on checking and adjusting the power and ignition systems, they may not have the desired effect, which causes the above-mentioned problems to remain.
The engine expert must also give importance to other mechanical checks, such as: measurement of the depression of the intake manifold, measurement of the working temperature of the engine, verification of the tightness of the combustion chambers, verification of the quality of the fuel used, presence of false air intake in the intake ducts, etc.