Why does a moped stall avtopraim.ru

The scooter stalls when adding gas: what to do?

Many scooter riders who have been using the same scooter model for several years must have encountered a problem where the scooter either does not start or starts but stalls after adding gas.
What is this problem and what is its solution, we will consider in this article. If you have this problem, it will be extremely difficult to fix it without special knowledge. The first step is to make sure that certain parts are working, so you should do the following:

configure and adjust the carburetor;
check the air filter;
check compression, replace rings if necessary;
check the spark on the spark plug;
adjust the float on the carburetor;
check the relay, generator and coil;
as a last resort, try to replace the carburetor.

How much adrenaline is in your blood

configure and adjust the carburetor;
check the air filter;
check compression, replace rings if necessary;
check the spark on the spark plug;
adjust the float on the carburetor;
check the relay, generator and coil;
as a last resort, try to replace the carburetor.

Cleaning and adjusting the carburetor

If you don't know why the scooter stalls when you give it gas, first check and adjust the carburetor. If it was often removed and adjusted, it may be that somewhere it began to leak air. If such a problem occurs, you can use a sealant or buy gaskets for the carburetor.

Let’s say the scooter stalls, you don’t know what to do. Then the first thing we do is clean the carburetor. Mostly the jets and auxiliary systems become clogged with dirt, so after cleaning the carburetor and adjusting all the jets, you can try to start the scooter again and give it gas. If the problem is not solved, move on to the main action - adjusting the needle to adjust the quality of the mixture. The needle in the carburetor performs the main task - adjusting the amount of fuel that is then supplied to the combustion chamber. Basically, you can adjust the quality of the mixture using a special jet on the carburetor, but if working with it does not produce results, you will have to manipulate the needle.

The needle is in close contact with the throttle handle, so when the handle is opened, the needle rises up and allows fuel to be supplied. That is, the higher the needle is raised, the more gasoline flows in and the power increases. Power guarantees better speed and traction. If you disassembled the carburetor, taking out the needle you will see 5 grooves on it, one of which has a retaining ring installed. Typically, such a ring is located in the center, that is, on the 3rd groove. If you lift the locking ring up, the needle will drop lower. This allows a leaner mixture to be supplied to the evaporation system, in which more air is supplied than gasoline. When installing the ring on the 4th and 5th grooves, the mixture becomes richer, where more gasoline is supplied than air.

Be careful that if you put the ring up or down as much as possible, this will not give the best result; the adjustment must be done gradually. Otherwise, the scooter will overheat, there will be a loss of power, and our main problem is that the scooter will stall when you press the gas handle. To find out the quality of the mixture, check the spark plug; its color will indicate whether the mixture is rich or lean.

Please note that there may also be other reasons why the scooter stalls when applying gas. Above we indicated the main ones; for some, the scooter stalls due to improper operation of the generator. Try, adjust, and share your problems and how to solve them.

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Scooter rider

Consider a scooter malfunction such as the fact that the scooter jerks when accelerating. This may occur when a certain speed or engine speed is reached. There are many reasons for this, in this article we will look at the most common reasons why the scooter jerks.

We will start checking the scooter with a spark plug. Often this is where the problem lies. It may be that the spark plug is simply flooded, in which case it will be black and you need to check the enrichment agent. Then we go look at the carburetor. First you need to check the integrity of the membrane; perhaps cracks have appeared somewhere. This behavior of the scooter can be caused by a too rich or lean mixture. It is necessary to adjust the carburetor and select the optimal valve clearances. If the problem persists, then the piston may have worn out; you should also check the belt and rollers of the variator.

The scooter jerks, examples of cases

1. When accelerating at full throttle, it jerks strongly. If you reach half the gas, everything is fine; if you give more, it starts to jerk and the speed drops, or it seems that you turned off the ignition by turning the key to the OFF position.

In this case, the scooter jerks when accelerating , most likely because the mixture is too lean or rich. There may be air leaking somewhere. Perhaps some of the air is bypassing the filter. Check where the air might be going. For example: rubber pipe, air filter and its housing, tightness of gaskets. Next you should check the valves. It may be that the timing chain has shifted. It is also possible that the carburetor is simply not assembled correctly or the quality of the fuel is poor.

2. When accelerating at full throttle, the scooter jerks and does not accelerate beyond 40 km/h.

In this case, the reasons that the scooter jerks may be through the carburetor, improper supply of gasoline (see vacuum tap), electricity and the variator. Perhaps the spark plug is flooded, there are cracks in the carburetor membrane (even very small ones), the carburetor is not configured correctly. In general, there can be a lot of reasons; to figure it out exactly, you need to know a lot of details. For example, if the rings were recently changed, then the ring may have shattered. In this case, no matter what you change or adjust, nothing will help.

In general, in order to help in any way, you need to know more details. If you have such a problem, describe in the comments in detailed form, after which the scooter began to twitch, how this happened and what has already been done. I can help you figure out why the scooter is jerking.

Why does my scooter stall?

The operation of a scooter can be quite unpredictable, even despite the simplicity of the engine and the entire design. But when a breakdown occurs, it is sometimes quite difficult to determine the cause and make repairs. One of the most common problems is when the scooter stalls. This can happen in two cases - while driving and while idle with the engine running. Many people ask: why does the scooter start and stall? Experts identify three main reasons - carburetor, spark plug and wiring.

Reason 1: candle.

It is because of the spark plug that the most frequent breakdowns occur, when the scooter starts and stalls. There are electrodes on the spark plug, and when soot accumulates between them, the spark on the spark plug cannot work properly; in advanced cases, the spark does not pass through at all. If there is an incorrect gap, the spark plug will form a short circuit. This is what explains why the scooter stalls while driving - the spark does not come due to carbon deposits or a gap.

To avoid such malfunctions, we recommend monitoring the condition of the spark plug and, if possible, measuring the gap; this indicator should vary from 0.6 to 0.7 mm. At lower values, the spark plug will not work properly and will soon fail completely. If the gap is higher than these values, the spark plug will consume much more electricity, and the scooter's inability to produce this value will result in the inability to get a spark. Also, to avoid carbon deposits, we recommend sometimes driving at higher speeds, in which case the spark plug will clean itself. See in more detail here ⇒ why there is no spark on the scooter

Reason 2: carburetor.

A fairly common reason when a scooter starts and immediately stalls is an incorrectly configured carburetor. It is important to adhere to the exact parameters of the carburetor, because it must supply fuel in accordance with the characteristics of the engine; before using the scooter, check the jets, the level of the float chamber, and the level of the needle. Some scooter riders note that the scooter stalls while driving after one of the jets has come loose.

Also, after disassembling and cleaning the carburetor, the scooter owner may damage the float or install the needle incorrectly. In some cases, the engine stalls due to lack of air entering the carburetor. Thoroughly clean the air filter and, preferably, the carburetor itself. If you are not sure that the problem is in the air filter, just unscrew it and start the scooter. If it works without it, you will have to clean it. In another case, water enters the carburetor and mixes with the fuel. The scooter may not start at all or stall when starting to move. It is enough to drain gasoline from the float chamber and pump in new one.

Reason 3: electrical wiring

Sometimes owners notice that the reason when the scooter heats up and stalls is due to moisture getting into the devices or electrical wiring. In this case, the wiring is not able to function normally and, accordingly, produce a spark. The simplest thing you can do yourself is to simply dry the devices and wiring from moisture. It is also recommended to insulate the wiring with insulating tape; if all this does not help, then a more in-depth analysis of the electrical system is needed. See also the wiring diagram for Chinese 4T scooters

Does your scooter stall while driving?

Imagine the situation: you are riding a scooter, and suddenly it stalls and starts again. The reason is precisely the spark, or rather the peeling of carbon deposits from the electrode. When this action occurs, the scooter loses its spark and, accordingly, stalls. But when you move, the scooter operates at high speeds, which means the spark plug can clean itself of carbon deposits. The best way would be to replace the spark plug with a new one; its cost is quite low, but it will help solve this problem.

Motorcyclist

The normal operation of a scooter at idle speed depends on many factors, including the condition of the piston, spark plug, carburetor, air filter, muffler, switch, hall sensor, etc.

To know for sure the reason for the unstable idle of your scooter, you need to carry out a series of operations to identify the breakdown and make solutions to fix the problem.

Let's start checking . Adjust the idle speed of your scooter and watch what happens next. three possible developments point by point :

1. Even after adjustment, the scooter engine runs at high speeds . First, you need to make sure that the throttle of your scooter is completely closed to prevent under-throttle. If the throttle is not completely closed, you need to check the adjustment of the throttle control cable (throttle) and adjust the cable properly. However, if the damper is closed, and the speed is still high and cannot be adjusted, you need to check the idle jet in the carburetor to ensure it corresponds to the required markings, namely, the required diameter for a particular scooter model. 2. The scooter operates unstably at idle , despite manipulations with the settings. In this case, you first need to check the ignition timing for compliance with the standards. If deviations are detected, the switch, hall sensor, and electrical wiring must be checked. If the ignition timing is normal, the first thing to pay attention to is the gap between the spark plug electrodes. If the gap does not correspond to the nominal one, it must be determined as such, and if the gap and spark plug are normal, the composition and quality of the fuel mixture, regulated by the carburetor, must be checked. 3. The scooter does not idle , despite numerous attempts to adjust the idle speed. In this case, the first thing you need to pay attention to is compression. In the absence of normal compression, achieving a stable idle is simply unrealistic. If you find that the compression is very low, check the tightness of your scooter's CPG, check all gaskets and bolt tightness. Check the piston rings for wear. If the compression is still normal, we switch to the idle jet. In such cases, it is often clogged with dirt, which means cleaning the carburetor is simply necessary. Even if after cleaning the carburetor it is not possible to get the scooter to idle, be sure to check the fuel level in the float chamber and, if necessary, adjust it. In addition, if the problem has not been solved , it is necessary to inspect the carburetor mount, making sure that there are no various damages. The vacuum tube of the fuel valve and the plate valve are also subject to inspection.

In this article you will find answers to the following questions: Why does the scooter stall at idle. Why is there no idle speed on the scooter? Why does my scooter stall when idling? Why does the scooter not idle? Why does the scooter not idle? Why does the scooter stall at idle?

The answers are also in the picture:

Reasons why the 4T scooter starts and stalls

Experts, help! The Scoot stopped starting. Or rather, it starts if you twist the throttle several times, i.e. inject fuel with a pump. It works for a while if you apply gas all the time. It feels like the needle is not rising. Gasoline enters the float chamber. The rubber membrane that lifts the needle is intact. What else could it be?

Adjust the idle speed and look at the spark plug.

The spark plug is OK. I doubt it about singles. The problem started suddenly. I started it, drove about 500 meters and the scooter died. Have the idle ones really lost their way? Although it always started with difficulty if it stood for a long time. On hot with half a turn. The engine is four-stroke. The carburetor was washed, blown and cleaned. The starting device is normal. Maybe not the carburetor. But why does the bastard start and run, even if not for long, when you apply gas, or rather, engage the accelerator pump?

What about the level in the float chamber?! Maybe while the gasoline sits for a long time, it leaks somewhere, and then while you are jerking around, it fills up again and only after that does it start?

While I was driving, the setting of the throttle control (located directly on the cable in front of the handle) was lost and I also had problems with the winding! I had to apply the gas until I figured out what the problem was! Yes, how are you doing with compression?

There were similar symptoms, as it turned out - dirt in the carburetor from the previous owner.

I also have a 4-stroke Chinese one, you can immediately change the rings, when it’s cold there is no compression when you pull it, the rings heat up and it starts freely! I suffered the same way! As soon as I changed the valve, I set the starter with half a turn and it started! Now I’m thinking about what will happen to mine tomorrow. Today I removed the cylinder from under it, gasoline was leaking and gasoline was leaking into the crankcase and from the muffler when I started the moped, today I took it off and looked at the end of the gasket! I coated everything with sealant, pressed it down, changed the oil, everything seems to be normal! I'm waiting for the sealant to dry until tomorrow! And so it seizes and stalls, well, it’s most likely the valve!

I measured the compression - about 12. I caught the gasket on the inlet pipe, otherwise it didn’t seem to fit. I changed the spark plug. Along the way, I found two wires that were simply inserted into the connector. He pulled and they jumped out. Soldered. And the discharge in the carburetor is not bad. I closed the inlet hole with my hand, turned the starter - my hand almost got sucked in. Once again I washed, blew and cleaned the carburetor. The level in the float chamber is normal. And no results. Today I took it to a friend’s private workshop. Maybe he'll check the spark plugs under pressure. Or maybe it's really a valve. Then let a pro do it, otherwise I’m not good at them. It may be simple, but let him show it the first time.

Well that means valves! Look, the gasoline is flowing well. Try pouring it straight!

Joker_balu

, I have 2 friends and they ride the same scooters as yours, one is always fine, the other always has problems with it

Look at the candlestick, it could be the cause of poor starting (I checked it myself or personally with a friend), look at the tube (it’s crappy there) for vacuum, if something happened to it, change from the dropper And I can tell right away that these fasteners on the plastic will soon break off. two look at the fastenings on the tank, they are very flimsy in these scooters and fall off, the tank may fall to the bottom three trunk fastenings are also cracking, you need to digest them in a stalemate 4 the cover of the variator will peel off after wintering (if, of course, it’s your own) 5 change the rear and front shock absorbers to softer ones or take off 1 (left) first of all, you will often change the Vovtarykh bearing, you will ride like on stools with wheels 6 the main leg is very bad, the heels come off very quickly, try it, take it off and bend them a little, well, it seems like I described all the problems that I encountered on this scooter

Why does the scooter stall at idle?

A scooter, like any piece of equipment, can break down over time. Therefore, it needs to be checked and maintained from time to time. If the scooter is not serviced in a timely manner, it will therefore not serve you for a long time and faithfully. Even Chinese devices serve faithfully in capable hands. Today we will talk on the topic: “Why does the scooter stall at idle.”

Scooter stalls at idle

It happens that the scooter works well and picks up speed without problems. But if you release the throttle, the scooter will go into idle mode and stall. Most often this happens when it has not yet warmed up and without accelerating it stalls. But it happens that this happens after warming up or driving for a long time. What to do in such cases? Why does my scooter stall at idle? If it has not yet been run-in, then most likely you should just finish it and everything will work out. But if this is not related to the running-in, then we are looking for the reason.

Stalls at idle: reasons

The reason that the scooter stalls at idle may be a lean mixture (or a breakdown in the fuel system) or bad gasoline. Before starting repairs, check the quality of gasoline. If this starts after refueling, then you need to drain the gasoline and refuel at a proven gas station (you can rinse the tank with acetone). If this does not help, then you need to check the enricher itself and the mixture enrichment channels. If there are no problems there and the scooter stalls at idle, then we move on. We check the entire fuel system: - Carburetor. We remove and disassemble it. We completely wash every part and every channel. We put it back together in the same order as we took it apart. — Air filter. The paper one needs to be blown out with a compressor. If the condition is completely bad, then you need to replace the filter. We wash it with gasoline and dry it a little. Then soak it in oil. Squeeze out any excess glass in your hand. — Vacuum valve. Remove both hoses from the carburetor. We take the thin one into our mouth and suck it into ourselves. This is done to create a vacuum. At this time, gasoline should actively flow out from the other hose. If gasoline flows out sluggishly, you need to remove the vacuum seal and rinse, blow out, and clean it. After this, warm up the scooter well and adjust the idle speed.

If the scooter continues to stall at idle, then the possible reasons are: - The electric enrichment unit is jammed or incorrectly installed - The jets or the enrichment channel are poorly washed - The air filter is not sufficiently saturated or not saturated at all. — The carburetor is in poor condition. To check, you can tighten the quality screw completely and unscrew it one turn. This will be a very rough setting that will need to be reconfigured, but now you can check it will fix the scooter stalling at idle.

The scooter stalls

Typically, when carbon deposits form between the electrodes of the spark plug, the spark does not slip properly or may not form at all due to lack of contact on the electrode, which is covered with carbon deposits. It is also possible that the spark plug electrodes short-circuit with a small gap. It is important to monitor the condition of the spark plug in time, check the gap with a feeler gauge, usually on a two-stroke engine it is 0.6 - 0.7 mm. Reducing this gap leads to the fact that the spark will cover a small area and will not be able to properly ignite the fuel-air mixture. In addition, there is a high probability of electrodes melting.

Why does the moped stall?

Interruptions in engine operation can be different, the engine stalls at speed, then works again, drives jerkily, stalls at idle. Often all these problems are related to the candle. Sometimes with a carburetor.

Increasing the gap between the electrodes leads to an increase in current consumption, and the larger this gap, the relatively more voltage is required, until there is insufficient voltage to form a normal spark.

Sometimes the spark plug cleans itself when the scooter is driven at high speeds, if this does not happen and your spark plug is constantly subject to carbon deposits, and methods for adjusting the quality of the mixture do not help, you can saw off the side electrode to the middle of the central electrode, leaving the gap at the recommended value, 0.6 - 0.7 mm. It has been proven that this way the spark plug works more stably when there is a problem with carbon deposits. If you do not have problems with carbon deposits on the spark plug, this is not recommended.

Why does the scooter stall while driving, and then continue driving again? This happens when, at a higher speed, carbon deposits peel off from the electrode, at this time it shorts the central and side electrodes, the scooter loses the spark at the spark plug for a while and the motor stalls, after self-cleaning, it resumes operation. In this case, if this happens often, sawing off the side electrode, which was described above, will help in part.

The scooter engine can also operate unstably when moisture gets on electrical appliances and electrical wiring, voltage leaks and the spark disappears. After drying these parts or after being idle, the engine runs normally. If the scooter is exposed to such moisture, it is important to seal the electrical wiring and electrical appliances using any methods, electrical tape, tape, etc.

Why does the scooter stall?

Why does the scooter stall while driving?

Why does the scooter stall while driving, and then continue driving again? This happens when, at a higher speed, carbon deposits peel off from the electrode, at this time it shorts the central and side electrodes, the scooter loses the spark at the spark plug for a while and the motor stalls, after self-cleaning, it resumes operation. In this case, if this happens often, sawing off the side electrode, which was described above, will help in part.

Unstable engine operation is also possible due to water getting into the fuel, and from there into the carburetor. Also, the cause of unstable operation may be additional air leaks into the carburetor other than from the air filter, for example due to cracks in the pipe or a poor connection.

Now you know why the scooter stalls.

Why does the scooter stall while driving: carburetor

The carburetor may not be working correctly . There were cases when the scooter stalled only because the jet was simply unscrewed and if you screw it back in, the scooter works stably again. You need to check the needle, float and the carburetor itself for integrity. It is advisable to clean it immediately.

The scooter may stall due to lack of air . To do this, you just need to clean the air filter. To check that the reason that the device stalls while driving is in the air filter, just unscrew it and check its operation without a filter.

Why does a moped stall?

tell me what could be. In general, the problem is this: it drives and after 1.5 minutes it stalls. If you install a new spark plug, it will go 2 times a kilometer. If you travel together, the distance will be even less

. If it stalls on its own, it will not start again in the near future, and if it does start, it will not de-accelerate, and if you turn on the gas, it will stall completely. Sometimes it will de-accelerate, but if you take it off the step and sit on it and turn on the gas, it will stall. If you turn it off yourself for now If it doesn’t stall, then in 5 minutes it will go the same way. Please tell me what could be wrong. At first I thought that the gasket was leaking somewhere - I changed the gaskets where the petal is and where the carburetor with the pipe (which goes to the petal) connects. But it still stalls! It doesn’t seem to fill the spark plug. PLEASE TELL ME WHAT COULD BE.

Salute. I had similar garbage. I disassembled the carburetor, and there one jet was unscrewed completely. I put it in place, tightened it, and now I’m driving. I have a Honda dio cesna af 34.

It turns out that there is a shortage of gasoline, look from the gas tank to the cylinder

Most likely there is a lot of carbon deposits and the spark plug gets clogged. It may also be that there is a problem with the coil and the spark plugs are breaking through. You need to look here. If you constantly change spark plugs, then take out one of the non-working ones and see what’s wrong with it, or is it sooted or broken?

ZooX? they are sooted, but not very heavily, but not weakly either. The spark plugs are not broken. And it can’t be a problem with the seals. So I turned the gas to the floor (on the step) for about 5 seconds and stalled. I didn’t even react to the gas (