5 main reasons why the Dio 34 scooter does not start

I bought a HOnda DIO hole from a friend. for 3 rubles, they said something was wrong with it and it doesn’t go more than 35 mph

when my father brought it in. it didn’t even start... after 1 day of torment in the garage (I started the hole but it stalled after 30 seconds-1 minute. Then I started it! (Lo and behold) it worked for 5-7 minutes... then I took it for a ride 10-15 minutes and it died again... and for the 3rd day I can’t start it... new spark plug, gas oil, carburetor cleaned, plug was cleaned before me (you can see it), new piston, new rings... and still won’t start .. it doesn’t have a limiter, the former owner said that the hole goes 80 mph generally in the lungs. But then he started going 30-35 mph, adjusted the carburetor. Filled in new gasoline... a spark comes from the spark plug. Compression is also fine.

Changing the lubricant in any engine is an extremely important task, because otherwise there is no way to ensure high-quality and long-term operation of all engine systems. The service life of the cultivator depends directly on the quality of the lubricant poured in, so it is not recommended to use automobile oil, more details from service stations.

Do not forget that replacing lubricant will cost several times less than purchasing new parts for the unit.

Why does the engine eat oil and how to deal with it. + opinion on the holes on the piston skirt. what to do?

Don't know. and if it doesn’t, then the carburetor needs to be cleaned? tastDate: Wed, 27.10.2010, 10:00 | Message #8 Lieutenant Experienced

Posts: 172 Reputation: Status: Offline

I'm telling you, try to start it from the pusher extasyDate: Wed, 10/27/2010, 10:25 | Message #9 Colonel Experienced

Messages: 1032 Reputation: 7

Status: Offline

Scooter: Hyosung GT250

so just a couple of days ago they did the same thing only with 100 cc addresses, in the end they pushed it, but what the heck, they poured gasoline into a syringe straight to the floor and started the starter, it grabbed and worked until that gasoline ran out) and They did this over and over again, in the end, after unscrewing the spark plugs probably 8 times already, they filled it in again and let’s turn it with the starter, it works, you give the gas to the floor, it’s bad, but it doesn’t seem to stall, then there was a breakthrough right away and everything fell into place, worked as before) everyone is happy) but check the fuel supply, remove the fuel pipe from the carb, and the vacuum (suck to the vacuum) and if fuel flows from the fuel pipe, then everything is fine,) attach the fuel to the carb and pump the vacuum a little into the carb)

No spark

To check the spark, apply ground to the spark plug.

- faulty spark plug,
— breakage of the spark plug or armored wire, short circuit in the ignition coil,
- there is no contact or the diode in the ignition switch with three wires on diode 34 is faulty,

— the switch, generator or hall sensor is faulty.

All this is checked with a multimeter, or, in simple terms, a “tseshka”.

Electrics is a voluminous topic, so I will describe it in another article.

What to do if the scooter does not start? DIY repair

One of the most popular two-wheeled vehicles in the world is, of course, the scooter! Many people start with them, since this type of motorcycle is characterized by simple operation and an affordable price. But, as a rule, beginners have no experience in repair and maintenance. In this article we will help you figure out what to do if your scooter does not start.

Let's look at standard faults that make the scooter difficult to start. The most important thing in troubleshooting is to learn to recognize it by certain signs and proceed from simple to complex. Sometimes the reason is the most banal - the gas ran out, the battery was discharged, they forgot to turn on the power button or open the gas tap (on a moped).

If these conditions are met, but the scooter still doesn’t start, we dig deeper.

Why doesn't my scooter start after winter?

This paragraph is for those who are confident in the technical health of their scooter and just need to start it after winter.

The secret is that the fuel in the carburetor float chamber loses octane number with each month of inactivity.

You simply need to release the old fuel by unscrewing the drain screw at the very bottom of the carburetor. The old fuel will come out through a hose specially designed for this purpose.

A dead battery is a common problem.

If the scooter does not start from the starter, try starting it from the kick starter. The most common problem is that the battery is simply dead due to a long period of inactivity, or has reached its intended service life. But it also happens that the relay regulator fails or the fuse blows. The fuse is usually transparent and its demise can be determined by eye.

A malfunction of the regulator relay can be determined by starting the scooter with a kick starter and measuring the voltage at the battery contacts. It should not exceed 14.5 V.

To avoid discharging the battery in the future, we advise you to remove the negative terminal, and during winter idle time, keep the battery warm, check the electrolyte level and fully charge it before storage.

The second most common problem is why the scooter won’t start - there is nothing to ignite the fuel, or there is a spark - but there is nothing to ignite. To check the spark, you need to remove the spark plug cap and unscrew the spark plug. It must be dry and clean.

The gap between the electrodes is needed 0.6-0.7 mm. The first sign of a lack of spark is that the spark plug is wet and smells of gasoline. This means the fuel did not burn in the cylinder and remained on the spark plug.

Dry and clean it, then insert it into the cap and lean it against the cylinder mass.

At the same time, press the starter button for a second or the kick starter a couple of times. The spark between the spark plug electrodes should be clearly visible. If there is no spark, then replace the spark plug with a new one, most often this is the problem.

The quality of gasoline in Russia is not very good, this quickly kills spark plugs, especially iridium ones. If a spark does not appear with the new spark plug, we look for a fault in the wiring. A broken wire or oxidation connecting the ground between the frame and the engine is a common problem. Another reason could be a burnt-out resistor in the spark plug cap.

It can be checked with a multimeter; the resistance should be about 5 kOhm. If this is not the problem, then check the ignition coil, this can also be done with a multimeter. In this case, the resistance of the primary and secondary windings is checked. The resistance of the primary winding, as a rule, tends to zero.

Well, the resistance of the secondary should be several kOhms. There shouldn't be a break.

It is also worth checking the switch by replacing it with a known good one.

The next possible malfunction is a break in the wire coming from the ignition switch or the wire coming from the switch. Check the wires for breaks or abrasions. Check the reliability of the female-male plug connections.

If no visible damage is found, a wire break can be detected by testing each wire with a multimeter.

If the above manipulations did not produce results and a spark never appeared, the last reason for its absence is failure of the generator, pulse sensor or generator windings, which happens extremely rarely. The generator windings can also be checked with a multimeter.

If there is a spark, but after that the scooter does not start, there is a high probability that fuel is not supplied. To address this issue, start checking at the gas tank. It is advisable if the gas tank is at least half full. To ensure that fuel is supplied to the carburetor, remove the fuel hose from the carburetor by lowering it into a previously prepared container (bottle).

As a rule, scooters have a built-in vacuum gas valve that opens the fuel supply only during startup or operation of the scooter.

To check the valve with the fuel hose lowered into the bottle, we try to start the engine for 3-5 seconds, or until a stream of gasoline appears.

In this case, the stream must be constant, at least “as big as a match”. If there is gasoline, but does not flow, the gas valve must be replaced.

If it is working, we look for the cause in the carburetor. First, the air filter must be clean. Because if there is a leak at the junction of the carburetor with the intake pipe, air is sucked in there, the mixture becomes too lean and starting the engine will be impossible. Make sure the gaskets between the carburetor are intact. Let's go further, the reason may be in the carburetor itself.

Insufficient fuel

Fuel may not flow due to a jammed carburetor shut-off needle. This is possible when it is clogged, or because the level in the float chamber is out of whack. It is necessary to disassemble the carburetor, blow out all channels and jets with compressed air. You can use a bicycle pump for this.

After cleaning, check that the float and the rubber seal on the shut-off needle are intact, and adjust the floats. The position of the floats must be horizontal.

Otherwise, by bending the tongue under the locking needle, achieve a horizontal position of the floats on the inverted carburetor. After putting it back together, use a transparent hose to accurately check the fuel level. You can use the VAZ washer hose.

by connecting it to the carburetor sump and unscrewing the drain screw, the fuel level should be level with the joint of the bottom cover +/- 2mm as in the figure below:

By the way, if the scooter does not start in the cold, in the morning, or in the fall, then the solenoid enrichment valve is most likely faulty.

Probable causes of breakdowns

Now that the power system is in order and the scooter still doesn’t start, let’s look at another possible reason. It sometimes happens that owners often do not service their equipment on time due to ignorance or other reasons. If the above methods do not produce results, the problem may be with the engine. Check the oil level to see if there is any at all.

On 2-stroke scooters this is required much more often, but it does not need to be changed, only topped up, since it burns along with gasoline. In any case, whether it is a 2- or 4-stroke scooter, when the oil level is low, the cylinder-piston group suffers sharply. Check the compression by removing the spark plug. This is done with a “compression gauge,” but if you don’t have one at hand, you can use your finger.

Why the 4t scooter does not start: reasons, search and elimination

When a scooter or moped does not start, it can upset the owner and let him down at a crucial moment. There are a number of reasons why the engine will not start. Let's try to get to the bottom of the problem - why you can't start a scooter - and find ways to solve it.

Main reasons

So, let's look at why the 4t scooter won't start - the reasons can be divided into the following categories:

fuel system malfunctions
ignition system malfunctions
piston group malfunctions
malfunction of the gas distribution mechanism (GRM).

Each of these 4 categories has its own several possible causes. When diagnosing a scooter, you should carefully pay attention to each category and the problem in it. Step by step, eliminating faults, you will definitely find the cause. And then it’s a matter of technology!

Fuel system malfunctions

If there is no gasoline in the tank, the scooter will not start - everyone knows. The same situation occurs when the fuel system malfunctions - gasoline does not reach the combustion chamber. The consequence is that there is nothing to burn, so the engine does not start. The reasons may be as follows:

faulty fuel valve
clogged fuel filter
contaminated carburetor, failure of its individual parts
The vacuum suction supplied to the fuel tap does not work.

Tap

It is recommended to start repairs with the simplest ones. In this case, the diagnosis begins with the fuel tap (if there is gasoline in the tank). To check operation, remove the fuel supply hose from the carburetor, then crank the engine with the starter or crank. The serviceability of the tap will be visible by the stream of gasoline flowing from the hose.

First of all, you need to make sure that there is gasoline in the fuel tank by opening the gas tank cap and looking inside. To make sure that the fuel tap of the scooter is working properly, you should disconnect the gasoline supply hose from the carburetor and crank the engine to make sure that gasoline is flowing from the hose in a trickle (observe fire safety measures !)

A constant flow of fuel, even when the engine is stopped, or a lack of fuel supply through the hose indicates a breakdown of the fuel valve. If fuel is constantly leaking, change the valve immediately. Otherwise, you should pay attention to the condition of the fuel hoses, and only then replace the fuel tap.

Filter

The serviceability of the filter is diagnosed visually and by blowing. A dirty filter should be replaced immediately. If the filter looks clean, but does not blow in the desired direction, it means it is clogged and requires replacement.

Carburetor

A dirty carburetor is another reason why fuel does not reach the combustion chamber. The device becomes dirty due to poor filters (fuel and air) and poor fuel quality. Here is a list of actions necessary to eliminate carburetor malfunction:

remove the carburetor and disassemble it
rinse and blow out the holes with compressed air (if compressed air is not available, use a regular pump)
pay attention to the condition of the float chamber, both the float itself and its adjustment; condition of the locking needle - is it worn out or sunk?
Clean the fuel nozzle thoroughly.

Ignition system malfunctions

Another possible reason why the engine does not work is a malfunction of the ignition system. This group includes many different little things, each of which can become the main reason for the engine not starting.

Spark plug

Let's start our search again with the simplest thing. Unscrew the spark plug from the cylinder, put a cap on it and lean the electrodes against the cylinder. Next, rotate the engine with the starter. In this case, a spark should jump between the two electrodes of the spark plug - straight and curved. If it is missing, you should perform a number of actions:

Clean the spark plug from carbon deposits and oil contaminants using a rag and a metal brush
warm the candle on the fire of a gas burner
set the optimal gap between the electrodes - the gap should be about 1-1.5 mm.

Source: https://proscootera.ru/masterskaya/remont/pochemu-ne-zavoditsya-skuter-4-t-prichiny-poisk-i-ustranenie

Auto, Moto

05.03 12:05

Malfunctions, spare parts, service, insurance

Any scooter experts? I haven’t been able to start the boy’s moped for two days. And the moped is a Honda Dio. So that's what I did. I checked the spark, there is a spark (new spark plug). I checked the vacuum pump, the membranes are intact and pumping. The solenoid valve works. The battery is new and turns well. He even grasps it, but... doesn’t want to work. He removed the carburetor, unscrewed the jets, washed everything, blew it out. He even removed the gas tank, poured out the old one, and poured in fresh gasoline. What else does he need?

Continue topic

Yes, sometimes little things happen. I couldn’t start because the fine filter was in the opposite direction and was compressed due to this

Unscrew the spark plug, pour 40 grams of oil into the cylinder, pump it with the kickstarter a couple of times. Screw the candle back. Try starting it. If the compression is weak, it helps (Added after 30 seconds)

Change your rings

No rings, no piston... Problem found. There was an air leak in the carburetor float chamber. I made a gasket and it works like a charm.

The motorcycle itself has a new piston and rings. And it will fly like a native. My son had the same problem. He cured it in an hour and a half. And use good 2-stroke oil.

I don’t pour oil into the oil tank, but mix it with gasoline. I recommend it to everyone.

I wrote a solution to the problem above.

ignition control unit.

no compression, replace the rings.

“Marine Service” (Mira 29a) has been working with various small-engine equipment for twenty years.

Maybe the petal valve, the body was deformed, the petals did not fit well, they also suffered for a long time until they found the cause

maybe the chain jumped and the ignition went wrong

What chain? Timing? Isn't the Honda Dio a two-stroke?

nope four

Check the compression and remove the muffler as described below.

Try disconnecting the muffler and starting it, even if you close it with your finger the scooter stalls.

I'm going to film. (Added after 12 minutes)

Disconnected. I grabbed it, even ran it for 30 seconds, and died. Doesn't grab anymore.

Check the compression, it looks like it's bad

Good afternoon The Scher-Khan Universe 3 telematic security system was installed on the Subaru Forester SJ5. With the advent of frost, the autostart stopped working. Everything worked fine until sub-zero temperatures. In the application settings, all autorun restrictions are disabled. What could be the problem?

Fellow countrymen, tell me who is in the subject. Where to buy a clutch disc and small items for a Chevrolet Niva? Thank you.

Why do they close the registration when selling a car? numbers? Makes me suspect that something is wrong with the car.

All roads are wet in the morning -15

dunces in business, useless workers, pests.

Good evening, dear forum users, please tell me, otherwise I’ve already lost my mind where to go, what to look at. So, when you smoothly accelerate from 0 to 30 approximately, the car experiences a certain vibration, as if you were driving on an uneven road, it’s so smooth, it feels like the rear wobbles. As a result, I changed the tires, wheels, cardan with suspension together, gearbox, rear drive, but the vibration remained as it was. The car is Mark X, 4 wd

The carburetor is acting up

— the main jet or idle jet is clogged,

- low-quality or long-stored gasoline in a canister with an open lid,
- the needle does not keep the level in the carburetor and therefore fills the spark plug,

- if the scooter starts poorly when cold, but starts normally when hot, this means that the cold start system is not working.

It is advisable to adjust and clean the carburetor once a season.

Structure and principle of operation

The cold start system works like a second mini-carburetor, in which the solenoid valve acts as a throttle. It is open only at start and gradually closes when the engine warms up.

The air mixture enrichment system consists of:

- additional channel,

— emulsion tube of the enricher,

- jet in the float chamber cover,

— solenoid valve.

Exhaust pipe clogged with carbon deposits

In this situation, the scooter does not pull at all and stalls.

You need to remove the pipe and check it for ventilation. There may be carbon deposits inside the pipe or some partition has broken off, blocking the exhaust.

You can also check the pipe without removing it from the scooter: at idle, if the pipe is not clogged, the smoke comes out in a pulsation, approximately at the beat of the engine.

And if the pipe is clogged, then the smoke comes out at high speed in a continuous stream. This indicates a reduction in the throughput hole in the exhaust pipe.

Poor compression in cylinder 2t engine

As a result, the combustible mixture does not enter the combustion chamber well.

Good compression is felt by the foot when starting with the kickstarter and when measured with a compression meter it is at least 10 bar.

Due to insufficient compression, the vacuum fuel pump may not work well.

The serviceability of the fuel pump is easy to check: remove the gasoline supply hose from the carburetor and push the kickstarter with your foot.

If the fuel pump is working properly and there is good compression, gasoline should flow out of the hose in copious drops. If gasoline does not flow, then you need to determine what is faulty - the fuel pump or the piston group.

What to do if the scooter does not start? Tips from the master

Quite often you can see cases when the owner is faced with the following problem: the scooter will not start. This may be due to a large number of reasons. Most often these are typical breakdowns or malfunctions, especially if the moped was parked in cold weather. Depending on the identified problem, the moped can be repaired in a few minutes or several hours.

Typical reasons

First of all, you need to check: the ignition and power systems. Carry out a check in those places that can cause the moped to move. The reasons why the scooter does not start, especially in cold weather, may be the following:

No spark in spark plug

The scooter does not start because there is no spark in the spark plug. In this case, you need to do the following: the spark plug is unscrewed and checked for suitability. Connects to the ignition coil using a wire. Placed on the cylinder. When the crankshaft rotates, the spark at the spark plug is checked. The scooter will not start if there is no spark at the plug, or there is a spark, but it is inconsistent.

Reasons for the lack of spark on the spark plug

Cold weather

The scooter may have difficulty starting in cold weather if there is a problem with the spark plug cap or its connector. In such a situation, the cap is unscrewed from the wire, and the wire is brought 0.3 cm closer to the metal motor element to crank the crankshaft.

Main reasons

So, let's look at why the 4t scooter won't start - the reasons can be divided into the following categories:

fuel system malfunctions
ignition system malfunctions
piston group malfunctions
malfunction of the gas distribution mechanism (GRM).

Advice! Remember that there may be several reasons. Therefore, having eliminated one breakdown, you should still check the serviceability of other devices from the list of possible faults.

Fuel system malfunctions

faulty fuel valve
clogged fuel filter
contaminated carburetor, failure of its individual parts
The vacuum suction supplied to the fuel tap does not work.

Filter

Carburetor

remove the carburetor and disassemble it
rinse and blow out the holes with compressed air (if compressed air is not available, use a regular pump)
pay attention to the condition of the float chamber, both the float itself and its adjustment; condition of the locking needle - is it worn out or sunk?
Clean the fuel nozzle thoroughly.

Remember! There are no small details in carburetor repair! One missed moment may cost you to clean the entire carburetor again and find out the cause.

Ignition system malfunctions

dirty or faulty spark plug
high voltage wire
ignition coil
faulty ignition sensor
failed switch.

Play in crankshaft bearings

This happens often.

If the bearings make noise when the engine is running, then radial play appears in them, which leads to wear of the seals.

As a result, air leaks through the seals, the combustible mixture changes its composition and does not ignite well.

This is a rather complicated repair. It requires removing the engine to replace bearings and seals. A beginner may not be able to handle it; he will probably bend the shaft. It's better to turn to professionals.

So, we have looked at the most common reasons - why the Dio 34 and other 2-stroke scooters do not start well or do not start.

I hope that the article will be useful to you.

Bye everyone!

Take action and you will succeed!

Why won't my scooter start? Causes and possible breakdowns:

Scooter owners are the happy owners of a fashionable and comfortable vehicle that will easily fit into any traffic and help you get to your desired destination even in tough traffic jams. But sometimes any driver encounters a technical problem that can happen to anyone - the scooter will not start. What is the reason?

Principle of operation

Why won't my scooter start? There can be many reasons for this - from a small malfunction of the engine to a serious breakdown.

A moped differs from other types of vehicles in that it is an economical mode of transport. A typical average scooter has a 50cc engine, which is unable to burn too much fuel while driving. This explains the fact why it cannot reach very high speeds.

The maximum he can do is move at a speed of no more than 60 kilometers per hour. At the same time, the safety of the moped driver is at risk, since no side safety bars are provided here, as on full-fledged motorcycles.

But the reliability and simplicity of the design of this relatively cheap transport are so convenient for everyday use that the scooter has always been, is and will be popular among the people. But even the most unpretentious equipment sooner or later begins to act up and let its owners down. And then one fine day you are faced with the fact that the scooter will not start.

This may be due to careless handling, lack of timely technical inspection, as well as objective extraneous causes, consequences of an accident, and the like.