Most often, some small thing is to blame, although there may be a more serious failure. Here are 16 reasons why your car's engine may not want to come back to life after a winter of inactivity.
the motorcycle won't start...
The temperature outside is above zero, the asphalt is as dry as pepper, but if it gets cold, clothes will save you. It's time to start the season! Feeling a thirst for driving, you feverishly enter the garage, like a young man before a first date, with your hand trembling with impatience, insert the key into the ignition, turn it, press the starter... What happens next is like a blow to the stomach, because instead of the music of the engine, you hear silence.
It's not hard to predict that you'll swear first. However, it is definitely too early to fall into despair. Instead of getting angry, check a few things, step by step, according to the diagram we offer you. If you've winterized a good car and haven't picked it up in the meantime (that is, you haven't unknowingly ruined something), you can deal with most reasons why an engine won't run.
What could go wrong
- Ignition - no spark, the spark is weak, or it comes out “every once.”
- Gasoline supply - fuel is not supplied to the combustion chamber or is supplied in insufficient or excess quantities, does not enter the carburetor or injector, the quality of the fuel does not meet the standard.
- Air supply - the air filter is clogged, the damper adjustment is incorrect, the air filter housing is damaged, the intake pipe is “sucking”, the filter filling is missing.
Diagnostics will help to find out the cause of the breakdown.
The motorcycle starts and immediately stalls
The engine may suddenly stall due to an ignition or power failure. Mechanical breakdowns of the chassis are much less common. The engine immediately stalls if it does not have enough fuel or, conversely, there is too much of it, and the reason for this may be a malfunction of the spark plugs, carburetor, fuel pump or hoses. Tuning and flushing the carburetor will be the most likely solution. If the spark plugs are cleaned and the carburetor is working properly, the breakdown will probably be found in the ignition coil or starter enrichment.
What actions should be taken if there is a problem with the starter?
Having studied how a car starter works, it is easier to understand the causes of problems in its operation, as well as methods for eliminating these problems.
When answering the question why the starter does not turn, several possible reasons should be considered.
These methods for correcting a faulty starter are the simplest, but there may be other reasons why the starter refuses to work.
Another - perhaps better - way is to replace the parts for the used one. As you know, starters are durable devices, so buying second hand should not be risky at all. Of course, you must choose one that physically matches its predecessor, but not only that. Parameters are also important - do not install a diesel starter in a gasoline engine and vice versa.
The first suspicion always falls on the battery, but if it works, it is possible that the starter has failed.
Fortunately, it is rare for the starter to completely fire without warning. This gives us the opportunity to react in a timely manner and prevent vehicle immobilization.
Motorcycle won't start when cold
- Trying to start the engine in cold weather? You'll have to work hard to "wake up" him. The fuel mixture in the combustion chamber ignites only at a certain temperature, and engine oil becomes very thick in cold weather. We check the condition of the oil and depress the clutch during the starting process.
- Was the equipment stored in a poorly heated garage during the winter? In spring, rust appears on its components due to high humidity. Before you go on your first spring trip, the rust from the ignition parts must be removed.
- Difficulties with cold starting also occur in the warm season. If the motorcycle does not catch (does not start) after a long period of inactivity, you need to check the condition of the carburetor or increase the fuel level in the float chamber.
How to start a flooded two-stroke engine
It works on mowers, chainsaws and some outboard motors. It's scary because there comes a moment when it won't start and that's it.
Pull as much as you like - it's useless. I've had several situations like this. A way out of each of them was found, but the last situation (flooded engine) took 6 hours and a lot of Internet browsing. I'll leave this instruction here in summary.
How to properly start such a motor (scythe, saw)
It is important not to forget anything and follow the order of actions. Maybe then you won’t have to suffer at all.
1. Turn on the “on” toggle switch.
If you pull it out while the toggle switch is off, it will start to get rough.
On lawn mowers, also check to see if the gas is “locked up” and release it.
2. Press the fuel supply “frog” 10 times.
3. Pull out the choke
(look for a leak, it must be there and don’t ignore it). In this case, the choke should close the air damper so that the mixture is rich. In some devices it does not extend but switches, we need to figure this out.
4. Now we pull.
And we listen carefully.
The engine should almost start and STALL (normally).
No gasoline should escape from the muffler.
5. If step 4 is successful, we turn off the choke (open the plug) and pull. After a maximum of 3 tries, the engine should start and run at idle.
If the engine is hot, start it immediately with the choke on, but don’t forget
1. Turn on the toggle switch 2. If we have run out of fuel before, pump the frog.
What to do if there is a complete bummer
You tug on the suction pump but nothing happens. There are basically 2 reasons.
2. Congratulations, you have flooded the engine (spark plug) by endlessly pumping and jerking (for example, with the toggle switch off)
Gasoline supply
If the faucet flows fuel normally, check to see if sediment has accumulated in the carburetor float chamber. Open the drain hole, drain the contents, close it, and try to start the engine again.
To find out whether gasoline is entering the combustion chamber itself, you will need a spark plug wrench. Remove the armor wire from the spark plug, open the tap and operate the starter, then unscrew the spark plug and inspect the insulator. If it is dry, there is a problem with the fuel supply. A wet spark plug will need to be dried before screwing it back in.
Replacing relays in the mounting block
I swapped large relays in the mounting block with other similar relays and there was no result. The smaller relays are all the same, except for one, which has a blue stripe. These relyushki can be interchanged in any order. The relay marked with blue paint comes with the number 200041 0812, and the rest have the number 200041 1432.
We will install the relay with the blue stripe in its place, and the others can be in any order. It would be interesting to know if the VAZ Kalina relay will fit the Renault Logan, write in the comments.
We try to start the engine, it doesn’t start, only the starter relay clicks, then we’ll try again to swap the relays.
The lead terminals of the battery terminals must be cleaned of oxide using a damp cloth soaked in soda solution or a metal dishwashing sponge. And also, having dismantled all the fuses, you need to check the coils to see if they are burned out or not.
In the parking lot, the car started after the large relays were swapped...
Renault engine failure
If you repeatedly turn the ignition key “click” in one start position, the starter sometimes engages and the engine starts. This combination must be repeated several times until the current is “excited” to the starter and the engine starts.
From this we can conclude that the power terminals on the starter itself have oxidized. In this case, you need to perform one small operation under the car from an inspection hole, overpass, or in a car service center.
Let's put back the plastic cover of the mounting block; after these manipulations we won't need it. We install the headlight adjustment cable last so that it will interfere with the fastening of the cover. The fasteners were made inconveniently, it is difficult to pull out and put in its place. First, the lower part is seated against the wiring harness, and then the cover fastening is snapped on top by hand.
Rubber mat for battery
I recommend covering the upper part of the battery with a rubber mat from the battery tray of VAZ cars, produced by BRT in the city of Balakovo. Freely sold in the Lada VAZ spare parts store or at the car market.
The edges of the rubber mat are cut on both sides with scissors in the area of the wires connecting the battery terminals (see video at the end of the article). It is advisable to wrap the positive terminal with electrical tape, on which a rubber mat will lie.
The insulation of the car's engine, the felt, burns from the acid evaporating from under the cap of the battery cans, and the rubber of the mat creates protection. On VAZ cars it serves as a battery tray and protects the metal of the body from acid.
And also for the winter, I insulate the thermostat with a felt from the oncoming wind blowing through the main radiator and the engine temperature remains stable in one position after warming up. But also, the 2-4-2 divisions on the dashboard stop “jumping” and the car interior becomes much warmer in winter. As the weather gets warmer in the spring, I remove the felt from the engine and thermostat.
So, one of the red wires from the positive terminal of the battery goes to the starter, which we need to get to from the inspection hole.
Let's digress a little from the topic. An interesting phenomenon occurred in the inspection hole; I left 3 bottles of distilled water in a bag and one container froze, but the other two did not. One water bottle protected two bottles from the frost that were placed against the wall. Distilled water protected the rest of the water in the other two containers from frost with its body.
So, from the inspection hole you can see the red cable, screwed with a nut to the terminal of the Renault Logan retractor starter.
These terminals oxidize and burn, and therefore it is necessary to carry out preventive maintenance as the Renault Logan is used. First, spray the oxidized contacts with liquid from an aerosol can of WD-40, and then turn the starter and see if the engine starts or not.
I always carry a bottle of WD40 liquid in the trunk of my car just in case. In winter, door locks sometimes freeze, and as soon as you line this liquid, the keyholes begin to work.
So, we need to get closer to the starter with one hand and generously spray the liquid key from the can onto the terminal with the nut at the end of the red wire. It would be ideal if you unscrew the nut and clean the contact points with sandpaper, and tighten it back thoroughly.
The nut is connected to the terminal as one whole, and some craftsmen cut off this threaded nut (
and install a regular nut with an engraving washer on it. It was possible to loosen the nut a little and loosen the wire with the terminal and thereby improve the contact. But I did not do this as You need to conduct an experiment and see the result of the action of the VD-40 liquid as you use the car.
Successful engine start
After waiting 5-10 minutes, we start the engine, which immediately woke up and growled loudly in a metallic voice, turn it off and try to start it again. Everything works well, let’s drive it and see in practice, if it doesn’t work, let’s play around with the ignition key and start the engine.
I think you can remove the right wheel and reach with one hand to the starter terminal and spray liquid key from the can. Oxidation will pass and the starter will start working again.
As soon as you have free time, you will need to unscrew the nut assembled with the red wire and thoroughly clean it from oxidation.
As it gets warmer, the oil in the automatic transmission will need to be replaced or topped up, as in winter it slowly leaks out through the seals; you can see a small drip on the bottom of the box. The outer and inner CV joint boots are intact, not torn and there are no oil leaks. From the VAZ 1111 Oka car, rubber boots are installed on the steering racks.
Checking cylinder compression
If the Minsk motorcycle still does not start, then you need to check the compression. To do this, you need to unscrew the spark plug and pour a few grams of gasoline directly into the cylinder through the vacated hole.
Next, tighten the spark plug and try to start the motorcycle. After this, the engine should start and after running at full speed for a few seconds, stall.
If the motorcycle starts, then you should move on to more careful adjustment of the carburetor. Namely, using the appropriate bolts, try to adjust the opening of the idle air damper and adjust the proportions of the mixture entering the combustion chamber.
If the Minsk motorcycle does not start, there is a spark - this means that the mixture entering the combustion chamber does not reach the required compression and does not ignite.
There are many reasons why there may be no compression in the cylinder of a Minsk motorcycle:
- If the engine is equipped with valves, you may need to check for cracks on them. Also, the valves may not fit tightly to the “seat” or it may have quite a lot of wear.
- Burnout of the cylinder head gasket due to wear;
- Cylinder seizure due to engine overheating;
- Severe wear on the cylinder or piston;
- The cylinder rings have collapsed or are not installed correctly;
- Cracks have formed on the piston or cylinder due to long use;
- For engines equipped with valves, the gas distribution valve circuit may be broken, or this mechanism may not be installed correctly.
Therefore, for subsequent diagnosis of a malfunction of the Minsk motorcycle, it is necessary to completely disassemble the cylinder. It should be done slowly and ensure the cleanliness of all components.
Armed with patience, you need to examine all available spare parts for faults, defects, or simply incorrect installation.
Having made a lot of effort to carry out the described manipulations, it is safe to say that all attempts were made to eliminate the cause of the motorcycle malfunction: the functionality of the fuel system and ignition system was checked, and the presence of compression was checked.
But if the Minsk motorcycle still fails to start, then perhaps you should contact a motorcycle service center with specialized specialists for accurate diagnostics and subsequent repair of the motorcycle.
Basic faults
Sometimes the motorcycle starts to work abnormally or does not start at all. Let's look at the most common engine malfunctions.
The engine does not start. Reasons: Fuel does not flow into the carburetors. Floods (especially when the engine is hot). The tap sump is clogged. There is no spark at the spark plug:
b) the gap between the breaker contacts is incorrect, the breaker contacts are oily or burnt.
c) there is no contact at the battery terminals
.d) the wire terminals are dirty. e) the ignition coil is not working. f) the low-voltage wires are broken. There is no or weak compression in the engine:
a) there is no clearance in the valve mechanism.
b) malfunction of the piston rings
.c) loose fit of the valves due to burnout of the valve plates or carbon deposits on them. The engine runs intermittently. Reasons: Lean mixture:
a) illegal supply to the carburetor.
b) the carburetor jets are clogged. c) water has got into the gasoline. The spark plugs are faulty. The terminals on the battery are not tightened properly. The breaker contacts are burned or the gap is incorrect. The capacitor does not make contact or is broken. The mixture is enriched due to the fact that the float chamber is overfilled with gasoline. a) the float needle valve is dirty or leaking fuel.
b) the float has a leak.
c) the carburetor jet is poorly tightened. The carburetor adjustment is disturbed. The engine knocks. Reasons: Incorrect ignition. (early ignition) Engine overheating. Breakage of piston pins, pistons, cylinders, main bearings.
If the moped is not
Sometimes it happens that the moped does not want to start after several hours of inactivity. However, after warming up, it works and starts stably. Let's figure out why this happens.
When the engine is cold, all clearances (in the piston, in the valves, etc.) are far from ideal. Plus, when fuel gets on cold engine parts, it evaporates worse and therefore ignites worse. Because of this, during a cold start the engine needs a richer mixture than usual. It is for this purpose that devices are made on carburetor engines to enrich the mixture at start-up.
On the Alpha moped (and similar ones), an air damper is installed. It reduces the air flow and thereby enriches the working mixture. The damper has two positions: “closed” - the lever is raised up, “open” - the lever is lowered down. When starting “on a cold” air damper must be closed (lift the lever up) . When the engine runs for a while with the throttle closed, it needs to be opened. Driving with the throttle closed will lead to increased fuel consumption and the formation of carbon deposits on the spark plug and piston.
What to do if a cold moped does not start even with the throttle closed? Try using a syringe to fill in 5-7 ml. gasoline directly into the carburetor inlet pipe. If the moped starts after this, then the carburetor needs to be adjusted. If it doesn’t start, check the spark and compression (see above).
Burgman-Club
07.04.2020, 01:32
Doesn't the starter turn? What could it be?
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1. The engine start button is normal, I insure myself in the parking lot and turn it on periodically.
Not a button. 2. I checked the brake sensor. The brake light comes on on both brakes. That's not the reason. 3. Contacts on the starter relay? The relay doesn't even click, the starter is completely silent. 4. The relay is covered - Where is it located? I've already taken apart almost all the plastic. I don't see a starter relay. 5. The starter is covered - Unlikely. The engine wouldn't stall. And Bendix would click. While I'm hoping for the starter relay, I can't find it. It’s not on the frame, I removed the face with the headlight - there’s a lot of stuff, I don’t see the relay.
The question is: Could there be a resistance of about 700 ohms on the sidestand sensor? When opening, there is a complete break in contact; when the footrest is retracted, the resistance is 700 Ohms.
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- Moto: Sky 400K5 Type-S, Burg 250K6, Address V100
- City: Moscow, Southern Administrative District
- Age: 33
Last edited by Fasterpast 14:49, 09/14/2014
—————————————— The most difficult thing when riding a moped after winter is not to close your eyes from the pleasure!
Starter turns but won't start
If the starter of the described equipment spins when you turn the key in the ignition, but the engine does not show any signs. The cause of the malfunction may lie in both the electrical equipment of the car and the mechanics. Auto electrician malfunctions can be as described above, except for malfunctions associated with the starter and its circuits, plus the following reasons:
- Malfunction of the high pressure fuel pump (HPF)
- Mechanical engine failure
- “Airing” of fuel equipment
- Immobilizer malfunction
- Lack of diesel fuel in the tank
- Fuel filter clogged
- Chip in the key is faulty
- Clogged fuel lines
- Check valve failure
- Mechanical faults of injectors
The motorcycle suddenly stalled and would not start
Remember what preceded the breakdown:
- While driving, the power dropped sharply, the engine began to run jerkily, then fell silent - perhaps there was not enough fuel. The gas tank has run out or the tap is clogged.
- The motorcycle stalled in the rain or after driving through a puddle - the air filter or wiring was flooded, or both. Dry everything you can reach.
- While driving or at the start, the engine ran smoothly, then simply stalled - there was an electrical problem. The spark disappeared, the mass fell off, the coil or switch “died”. If this happens a short time after starting, check whether you forgot to open the fuel tap.
- The running engine “troil” did not develop high speeds, and after stopping it could not start - problems with the ignition settings or the carburetor was incorrectly adjusted.
Electric starter does not turn on
The ignition button is off - red on the right side of the steering wheel.
Dirty contacts in the ignition switch or near the starter button - unscrew the switch and clean the contacts using a special sprayer for electrical installations.
Battery voltage is too low: If you hear the characteristic sound of the starter relay firing, charge or replace the battery.
The main fuse or ignition relay has blown - check and replace what is needed.
A starter malfunction, for example, due to burned out stator windings or core, is unlikely to be corrected on your own, so contact a service center.
Spark test
To check the Minsk motorcycle, you need to remove the spark plug and unscrew the spark plug. Next, you should immediately determine (wet or dry) the spark plug contact.
If the contact is wet, then most likely there is a problem with the spark plug in your motorcycle. If the contact is dry, then you should look for a problem in the carburetor.
Since the spark plug has already been unscrewed, you can diagnose and verify its functionality. Before checking for a spark, the correct gap between the spark plug electrodes should be set.
According to the technical recommendation of the Minsk motorcycle manufacturer, the required gap should be from 0.4 to 0.7 mm, depending on the model. The gap is set using a feeler gauge, which can be purchased at any auto or motorcycle parts store. If you work on the Minsk motorcycle yourself, then this tool should already be in your kit.
To check the spark on a removed spark plug:
- insert the candle into the candle holder;
- short-circuit the spark plug body to ground;
- activate the winding stem.
Attention! When checking the spark plug, you must hold it only by the installed candle holder, otherwise electric shock may occur.
It should also be noted that spark is different. The correct working spark should always be the same, clearly visible, and always pass in the same place.
If a spark does not jump between the contacts of the spark plug, then it is necessary to check again, but using a different spark plug. If after re-checking a spark appears, this indicates that the installed spark plug was faulty and should be replaced. If there is still no spark, then you need to check the ignition system of the Minsk motorcycle.
If everything is in order with this, then we look at the spark plugs.
Unscrew the spark plugs. Are they damp and smell like gasoline? This means they are flooded. This can be for two reasons - you filled them or there is a malfunction in the motorcycle.
If you did this, for example, you turned off or started the motorcycle incorrectly, then you can fix it as follows.
Dry the spark plugs, blow them out and heat them. !We do not clean with a wire brush!
Next, put the dry spark plugs in place and try to start the motorcycle. If the motorcycle works, then !hurray! we continue our way.
TIP: purchase and carry a spare set of candles with you; once filled candles can stop working at any time, even if you bought them just yesterday.
If after the above steps the motorcycle does not start, then there is a clear malfunction either in the presence of a spark or in the fuel supply. You will have to take the motorcycle to a specialist motorcycle service center.
The candles are fine, they are dry.
First start
After a long period of inactivity, the motorcycle needs proper maintenance before the first start. In order to understand why a motorcycle does not start after winter, you need to remember the sequence of preserving your bike after the end of the season.
The first thing that is usually done in preparing a vehicle for long-term storage without movement is to remove the battery . It must be stored in a cool place, in a charged state. Therefore, to start the new season, you will need to install the battery in place. Sometimes a motorcycle does not start after winter precisely because of the lack of charge in the battery. Before installing the battery in place, it may need to be recharged.
It is important to store the motorcycle with a full tank of gasoline, otherwise condensation may cause metal corrosion. Contrary to widespread misconception, gasoline in the tank does not deteriorate, and this cannot be the reason why a Ural or Honda motorcycle does not start.
In any case, before starting to drive, you must carefully check the presence of antifreeze, brake fluid, and change the oil. Brake fluid is very sensitive to environmental humidity. If there are leaky connections, it absorbs moisture, which leads to oxidation of the brake system, and in some cases, to brake failure. And remember, your haste or inattention can cause serious damage to your motorcycle, especially after a long period of inactivity.
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Home > Blog > Ural motorcycle > Starting the Ural motorcycle engine after repair
After assembling the engine and installing it on the frame, it was time to start it. To do this, I connected the generator and battery.
Since there was no central locking, I had to use the diagram to find which wires to close. They turned out to be blue and red.
Why doesn't my motorcycle start in the cold?
Cold fuel cannot evaporate normally and settles on the walls of the intake tract. For an emergency cold start, warm up the intake manifold with a hair dryer or hot water when it is not very cold. Do not use open flames to warm up the engine.
After parking a warm motorcycle for a long time in the cold, condensation may accumulate in the tank, filter or float chamber. In winter it freezes and blocks the flow of fuel. In this case, after the engine has warmed up, you need to drain the condensate before starting the motorcycle.
Why won't a warm motorcycle start?
Difficulties with starting arise after several minutes of operation: the engine stalls, does not “catch” when hot, and you have to wait until the engine cools down at least a little. The most likely cause is air leaks in the intake tract or under the cylinder head.
Other possible reasons:
- the ignition timing is incorrectly set;
- low compression in cylinders;
- The valve clearance is off (on a four-stroke motorcycle).
In these cases, diagnostics “empty-handed” will not help - professional equipment is needed to check the indicators.
Even if the starting problem occurs sporadically, we advise you not to delay and diagnose the motorcycle before a serious malfunction occurs. At the first problem, contact the service center.
