The worst thing about a motorcycle drowning when accelerating is that they usually occur at the riskiest moments in driving: when overtaking, exiting a corner, or joining. In addition, they occur unexpectedly, which increases the risks of traffic accidents, since an unexpected change of pace or the total loss of power on a motorcycle on the road will put your life at risk and put your life at risk. of the other conductors of the same.



For this reason, it is very important that we review the causes that can cause our motorcycle to fail when accelerating.


When we encounter a problem of this characteristic, we usually face failures in the power system or breakdowns in the electrical systems.


Main causes why our motorcycle stalls when accelerating

Carburetor

One of the reasons may be an excess of gasoline or a mixture that is too rich, thus exceeding the explosive limits of the mixture and it is impossible to generate combustion inside the cylinder. And this may be due to the fact that you have left the starter  activated if it is manual, causing this higher proportion of fuel than desired. The motorcycle starter  is usually used to start the vehicle in adverse conditions, such as when the temperature is very low, but it must be closed when the motorcycle is already running.


A very dirty carburetor can also be the reason for  choking when accelerating. In these circumstances, what you will have to do is disassemble and clean the carburetor .


Air filter

The air filter is responsible for filtering all the filth, dust, etc., that would enter the interior of the engine. The air filter with use, dirt from the outside is deposited inside, which ends up obstructing the correct passage of air, causing problems in the combustion of the engine, especially in times of high demand such as sudden accelerations, which can reflected in failures when accelerating, even causing the motorcycle to stall.

We would also have to check the intake air ducts to make sure they are not obstructed by anything. In some cases, we keep a cloth or papers, so we must be especially careful if the air inlet of the filter box is located in this area, since by increasing the demand for the air flow that the engine sucks when accelerating, they can be absorbed and clog the duct.


Air intake at intake nozzle

If our intake nozzle is cracked or deteriorated, as it is not tight and increases the suction of the engine, more air than gasoline will enter us, thus having the problem that again our mixture will not be within the limits of flammability and we will not achieve combustion, also stopping the motorcycle in the most extreme cases.


Plugs

If the motorcycle has a damaged or damaged spark plug, we may not be able to make an effective spark jump when we need it and, as with power failures, it can cause our engine to stop.


The reasons for the motorcycle to shut down completely due to electrical faults or breakdowns can be several, but we will try to identify the most common.


Usually if the motorcycle is completely turned off: the frame, lights, engine etc. It will indicate that we have an electrical problem in the charging and electricity generation system.


Many times when the battery is in bad condition, our motorcycle can turn off when accelerating, not being able to supply the energy required to generate a powerful enough spark in the spark plug and power the rest of the electrical systems simultaneously.


Batteries when they reach their useful life will not hold a charge, which is why they will not supply adequate electricity to the motorcycle. In these cases it is recommended to check the battery first before carrying out any other tests.


The regulator of a motorcycle is also a component that can break down and cause this problem along with the alternator, since they are the components in charge of supplying electricity for all the motorcycle's systems and battery charging.


All of these components may appear to be in good condition, but instead fail when high performance is required when accelerating or revving, overheating, etc.


With the certainty that our battery is in perfect condition and fully charged, we proceed to carry out some tests to check the charging and current generation system.


We will carry out a simple test that consists of connecting the voltmeter as in the image, with the positive probe on the positive side of the battery and the negative probe on the negative pole of the battery. We proceed by revolutionizing the motorcycle to the regime set by the manufacturer in the workshop manual and we will check if the reading is within the predetermined values ​​by this.


If we do not have the manual in a generic way, although it is not the most appropriate, we can take these values ​​as a reference for the test:

at about 5000 or 6000 rpm and we will check the reading, it will be between 14-14.5v in almost all motorcycles .


If the load test is not satisfactory, we will have to check both the alternator and the regulator of our motorcycle.


In the event that the charging system is correct, we will have to examine and check other components, such as the coil ignition system, pipettes, pipette cables, ground connections, etc ...

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