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How To Tune-up Gasoline Engine

How To Tune-Up Gasoline Engine

Tune - Up is an activity check or replacement of engine components regularly. Tune-Up is one of the important machine maintenance, Tune-Up is also required to do regular and scheduled, so the engine properly maintained according to the guide book is given when you purchase a vehicle, either a gasoline-powered car or a diesel engine. Here is how to tune-up gasoline engine.


1. Check the Radiator Water

Before the tune-up started, first check the radiator water. Open the radiator cap by turning the radiator cap counter-clockwise, then see the water in the radiator of the water intake hole radiator. If the volume of the radiator water or concentrated water color, add or replace with clean water.
The volume of water in the radiator ketinggin said enough when the water reaches the upper limit cap radiator.dilarang start the engine if the radiator water is less, because, the machine will be extremely hot.
when checking the water radiator, also check the quality of the water from the radiator. If the water is dirty, it should be replaced with water baru.Apabila oily water radiators, oil leaks can occur to the engine cooling system. Check also the possibility of a water leak radiator to check whether there is any water seepage out of the radiator.

2. Checking the Engine Oil

After checking the radiator water quality and quantity, the next step is to check the engine oil. If the engine oil is checked after a tune-up, the result of the tune-up will not be satisfactory, because the condition of the engine oil temperature affect the engine performance. In addition, the engine oil also affects the sound of the engine. If the engine oil is dirty, dilute, or less, the sound of the engine will be noisy. This will affect the round stationary and idle the engine.
Examination of the engine oil includes oil contents and oil quality. The volume of oil must be within the limits specified minimum, if less oil, add the oil quality is the same. Preferably, the oil is added or removed from the same brand, in order to avoid chemical reactions that could be detrimental to the working conditions and the engine.

3. Conditions Visual Machines

After checking the engine oil, do not start the engine. carefully check the real condition of the machine. eyes assure you that the engine is really safe to be turned on.
Check the condition of the engine significantly reduces the risk of accidents, including measures that must be implemented before the tune-up. Machine is said to be ready to turn on if the check engine shows the following result.

No wires are pinched.
There is no spark plug wires loose.
Installation of the spark plug wires were neatly conform to the standard.
There is no any equipment located at the engine.
Baud and nut installed neatly.
Do not leak the gas in the engine.
No cable is short-circuited.
Engine oil and radiator water accordingly.

4. Turning Machines

When the machine is ready to be turned on and be safe from the risk of danger, turn on the machine in a stationary lap, after a minute then add the round if I have to. Do not start the engine directly on high idle, because the lubricant has not reached all parts of the engine and to prevent wear and tear on engine parts. For analysis of damage to the machine, as long as the engine starts, consider some of the following.

sound Machine

The sound can come out when the machine is turned on the machine as follows.

Burst as a result of burning
burst due to the combustion step gasoline and diesel fuel, causing a distinctive sound. In normal combustion engine, the sound letupannya average. In abnormal combustion engine, letupannya uneven sound, the beat is not usually occur every second. If the sound is not routed through the exhaust, it will sound very rough and noisy.
The sound of a gasoline engine is more refined than the diesel engine or diesel.

vibration Components
Knowing the characteristics of the sound of the various machines will facilitate in determining troubleshoot engine damage. Sound caused by the vibration of machine parts is abnormal sound. Vibration may occur because the baud or nut that is not attached to the neat, cracked parts, or damaged. Sound - the sound of the engine vibration caused quite different from the sound generated fuel combustion.


Friction machine parts that are not lubricated with oil, could result in an uncomfortable sound. Sound caused by friction can occur on the gas pedal wire carburetors that are not lubricated with neat, piston to cylinder wall friction, or friction in the bearing.

The rate of gas

The rate of leaking gas can cause abnormal sounds, such as leaks in the inlet gas in the cylinder (intake manifold). The sound in the form of loud noise.
Knock (knocking)
The sound is caused by the friction of two components of the machine hard enough, usually occurs in the following areas.

Slit valve that is too large.
Puli crank bearing loose.
Piston Crash.
Bearing piston loose.
As camshaft shaft loose.
Sprinkling Flowers Fire
High voltage electrical spark could cause a distinctive sound. The voice can sound like a lizard. The cause electrical sparks are leakage currents or shorting.

Gas pressure

The sound is caused by the abnormal gas pressure is almost equal to the leak rate of inlet gas. Gas leaks can be caused by a gasket that is less neat. The sound of the engine to listen carefully for the cause of an abnormality of the machine. Therefore, compare the sound of the engine before and after the tune-up done.

b. vibration Machine

Observe vibration during engine life in stationary rotation. The machine that normally does not have the harsh vibration. When examined, when the machine is turned on, the body does not sway unless the engine spark plugs wires swaying slightly. If a bit harsh engine vibration, there is a problem in combustion processes or parts of its parts. Hard and rough vibration can be caused by the following.

Compression is not the same in every cylinder.
Compression is not normal if the above standards.
Burning on one cylinder abnormal.
One of the spark plugs can not electricity.
One of the spark plug wires are not neat.
Installation of ignition by the spark plug wires are not.
There are parts that gojlag-bolt or loose bolts.

c. Exhaust fumes

Once the engine noise and vibration research, subsequent observe carefully the form and color of the rest of the combustion fumes out through the exhaust. The smoke that comes out through the exhaust are the traits of whether or not the fuel combustion process of the engine.
There are four different colors of exhaust fumes that can be used as a reference whether or not the combustion process in the engine, among others:

Color Smoke Black

Color and dense black smoke in diesel engines is something that is commonplace. However, the color of black smoke on the gasoline engine is a sign of abnormal combustion because of too much gas in a mixture of air and gasoline. Reasonable size that is used as a distinguishing color to say black smoke was a smoke machine or normal under normal conditions.

White Smoke Color

Smoke machine 2 reasonable not white. Unlike the 4 stroke engine, 4 stroke engine when the smoke is white it may have damage or problems on the machine. The white color due to the smoke from burning oil. In the 2-stroke engine, the oil is burned with gasoline. But in the 4 stroke engine, the oil does not burn, unless there is an oil leak from the oil chamber to the combustion chamber.

Smoke Not Colored or no wind

Smoke is good 4 stroke engine is the only tangible smoke in the wind if felt by the hand. Being smoke like this indicates normal fuel mixture, no excess gas, is not contaminated with oil, gasoline and no less.

Exhaust fumes issuing such granular charcoal

Soot in the smoke machine or black granules, both 2-stroke engine or 4 stroke, due to the content of petroleum compounds in the fuel. If the smoke generated emit soot, definitely abnormal engine noise and black spark plug electrodes.

The execution sequence Tune-Up

Having researched the problem machine, tune up work can begin. The execution of a tune up to be sequential and carefully. That is, in order to avoid repetition of work because of a service specific part affects the other parts.

a. Air Filter
b. Platinum Checking carefully and can also re sets
c. Spark Plug Wires
d. cover Distributors
e. Accu
f. plug
g. Valve Gap Setting
h. Positive Crank Case Ventilation
i. When Ignition
j. Idle Rotation
k. fan belt

After turning on Machine Tune-Up

After the tune-up is complete and the machine is turned on, pay attention to all parts of the engine is mounted in place correctly or not. If all the parts are installed correctly, start the engine at stationary rotation of a few minutes. During stationary rotating machinery, listen to the sound normal, increase the engine's rotation slowly as he noticed the engine noise, wobble, and the exhaust fumes. If you are sure there are no problems or to abnormalan on the machine, then tune-up has been completed.

Similarly Tips on How to Tune-Up gasoline engine. You can customize whether you want to do Tune-up by way of entering the garage or doing a tune-up gasoline engine alone if you can and no tools. May be useful. Best Regard