Carburetor Settings

 

This article I wrote from personal experience and from asking questions to the mechanical workshop, if my bike fitting service again.

Okay, I'll try to discuss about the problems of the carburetor on a two-wheeled vehicles (motorcycles) and a way of preference,

The main task of the carburetor is to mix Fuel + air (O2). Roughly the ratio of its range Fuel: O2 (air) is 1: 13-15. Anyway how do I let the machine can supply mix that much.

Why wear range, whereas the theory in a book burning books that ideal 1: 14?

The answer is to Because the condition of machinery & environments affect Fuel mixture settings: O2.

For example:

* The higher the compression the engine will get hot, the fuel supply means need more let the engine not broken.

* Humidity (moisture) environment increasingly high, the fuel mixture will be contaminated water, so the mixture getting poorer, have more gasoline MEANS.

* Low environmental temperature, engine temperature down, MEAN gasoline should be reduced so that the working temperature of the engine so ideal.

* Muffler (Free flow), rpm will be higher so the temperature will increase the engine needs fuel MEANS higher.

And many more parameters that must be considered including the design of inlets on the block by setting spuyer influential as a fuel distributor.

That theory basically.

Carburetor settings:

Carburetors have 2 spuyer:

One fruit of that act to channel the main jet fuel when throttle about half a lap up,

One fruit of that act to channel the pilot jet fuel from the gas rotation 0 degrees until full, only the effects of jet pilots could be said to be not very significant at full throttle and high engine rpm-me.

Tips are very simple setting the main jet and pilot jet.

Perform gas and wind adjustment to the maximum, if the engine screams at the highest setting is less shouted gas, the main jet is less and must be in Raise the score.

Try to Raise first 5 digits of the manufacturer's standard rate. After that, try to pull the gas. If the high gas looks like there is empty, or there is a pause in the supply of gasoline. "That's the main-jet is still lacking. Could Raise one step more, or be a 7 or 7.5 points. Usually, it is enough to rise high.

Conversely, if the time was not gassed smoothly even on a lap top. That means, increase the main jet is too large and should be lowered. Besides is not smooth, suit playing too big an impact as well wasteful gasoline. Gasoline is wasted and does not burn up. Can be seen in the spark plug. If the black very quickly, the setting is too big / not fit.

As for jet pilot suit, symptoms also detected with some things. The first symptoms, if the motor is difficult to live or once lived, but on lap down looks like there is empty. such as gasoline baseball road. That means the pilot jet needs to be increased, "

How to increase gradually as well, Just like the increase main jet. Any increase in the pilot and main jet engines each differ depending on type of carburetor, but from experience, setting the pilot and main jet motor baseball ever to 10.

Another thing with the influential settings including:

Venturi carburetor size,

Needles skepticism,

Wind suits,

Power jet.

 

Venturi carburetor bigger then the more air that passed sehingg spuyer greater need either the pilot or main jet so that the mixture can be fitted.

Continues when we raise ato spuyer shrink again?

Previously should know first gejala2 machine when lack of fuel and most fuel:

1. "Leaks" are symptoms such as loss of engine power due to fuel shortage reply

2. "Not well" is a symptom of who actually feels solid engine power just like muffled and sometimes accompanied by the sound of metal crash if the setting is too wet.

Means that the engine needs fuel leak, if not most fuel engine smoothly.

problems

1. Trouble Jet Pilot

Well here the problem occurs because the problem well-pilot jet:

* Motor that morning because it's so hard to live open gas leak continue to die, it means enlarging the pilot jet.

* Motor is the road but often tiba2 lost power when a low round n round gas jet pilot means naekin

* Motor is often over-heat as the road slowly means a big ask for a jet pilot

* Motor is not smooth in the run-down but good on lap top means the pilot jet greatness.

* Motor not use the choke when the morning & can immediately start

(this is also not normal) means that the pilot hrs down.

In conclusion, if there are symptoms leaking, high temperatures are relatively low diputaran who then asked naek jet pilot, and if there are symptoms is not smooth at low speed jg then the pilot must come down.

2. Trouble Main Jet

Continue to issue the main jet:

* Motor racing was brought up to finish the lap top on it goes so slow road less power coupled out of the smoke, MEAN temperature increases dramatically at high speed, then the main jet will get up.

* Breath motor on lap top is too long mean asking the main jet up.

* Motor noisy while others who normally MEANS engine temperature is very high when the lap top, then the main jet will get up.

* Motor sound is not fluent in the lap top just means the main jet'm down

etc.

In conclusion, if the motor sound is not fluent in the run-up means the main jet must come down, if the motor temperature is high in the run-up means the main jet will get up. (source)