What causes the left cylinder of Jupiter 5 to sneeze?

On domestic motorcycles, a problem often arises associated with the appearance of loud sounds in the muffler. Even drivers of foreign vehicles often suffer from “machine gun bursts” that accompany a sharp increase or decrease in speed. Getting rid of this trouble can be quite difficult. However, if you understand why a motorcycle shoots its muffler, you can eliminate loud noises that disturb public peace.

IZ Jupiter, conversations about him.

Messages: 1,745 From: row: out:

Pros: cheap. Cons: everything else)

What do you want to describe this mots about? What have you driven so far and how much have you driven? Based on this, it will be easier to talk.

Pros: cheap. Cons: everything else)

This is me comparing with the TDM850. Everything in the world is relative.

What do you want to describe this mots about? What have you driven so far and how much have you driven? Based on this, it will be easier to talk.

Hello, let's write down what you drove and how you drove it if possible

Messages: 3,461 mapetka shinenkay

v mix

, he asked you, actually. To make it easier to build a dialogue.

Everything is clear. I myself have ridden mainly on Jupiters, from yu3 to yu5. I have 6 years of experience racing. Now I'm racing in the Urals with my brother

Post edited by v mix

— Mar 21 2008, 19:21

Messages: 3,461 mapetka shinenkay

v mix

, well, if you drove both Izhas and parasites, then what should I compare Izhas to? Because you can compare Izh and Uralei-Dneperson yourself.

(I’ll tell the pasikret - if ErNi starts listing the equipment he drove away, the list will turn out to be worthy of extreme envy)

Post edited by tailhead

— Mar 21 2008, 19:29

Messages: 1,745 From: row: out:

Yes, I’m wondering, how do others like this technique? The Soviet auto industry rules

Posts: 725 From: Cheboksary 10T&10whls&875cc

I read the Motorcycle Encyclopedia in the evenings (I looked out in store windows for several years.). It becomes a shame for the state. They produced so many cool motorcycles in their time, they even set speed records and won FIM championships. Where is it now? And those factories are still standing. but they release lost scooters. It's a shame. Or maybe we’ll build a conveyor belt in Chebakh?

Source

Why is Izh Jupiter 5 sneezing?!

HOW THE IZH Jupiter5 SHOOTS Shoots at the carburetor - how to set it upRead more

The right cylinder on the Izh Jupiter 5 motorcycle does not work | The cylinder on a motorcycle does not workRead more

IZH JUPITER 5 What to do if the cylinder failsRead more

Izh Jupiter, at high speeds sneezes into the carburetorRead more

Cylinder failure on IZ Jupiter 5Read more

IZH JUPITER 5 - 3 REASONS WHY IT STARTS AND DRIVES BADLY / WHAT NOT TO DO / MY EXPERIENCERead more

Izh Jupiter 5 will not start. SolutionsRead more

Why does the right boiler of Izh Jupiter sneeze and not drive in 2nd gear? More details

Java 638, troits at high speeds, sneezes, reasons. Read more

Why does Izh Jupiter 5 sneeze?! Read more

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IZH JUPITER 5 - SNEEZING FROM THE RIGHT CYLINDERMore details

Source

The motorcycle shoots into the muffler: why does this happen and how to solve the problem?

A reason has been found why one cylinder of the Izh Jupiter 5 smokes more than the other.

Left cylinder of the Izh Jupiter engine. Why does it heat up and smoke? /motorcycle Izh Jupiter.More details

IZ Jupiter left pipe smokes cause and solutionRead more

the reason why 1 cylinder does not work, IZ Jupiter 5Read more

Right cylinder IZ Jupiter I'm looking for a problem the motorcycle doesn't workRead more

The right cylinder of the IZ Jupiter does not work. We solve the problem. Read more

The essence of the problem

Most often, loud pops in the muffler of two-wheeled vehicles are heard when a lean mixture is supplied to the engine. The reason for its formation may be the use of low-quality gasoline, saturated with water and non-flammable impurities, or incorrect adjustment of the intake system. The air-fuel mixture burns only partially - its remains splash out into the hot muffler, where they explode with sharp, unpleasant sounds. A symptom of a lean mixture is popping sounds in bursts, which intensify as the speed increases.

In powerful motorcycles, the completely opposite problem is more common, associated with the supply of an excessively rich mixture. There is not enough oxygen for its combustion, which leads to the deposition of gasoline condensate on the walls of the muffler. When the “critical mass” is reached, the fuel outside the engine ignites, resulting in one loud bang. If the problem is not corrected, within 1–2 months the contents of the muffler will simply burn out and it will turn into a “direct flow”.

Comments

on Jupiter 5, the spark of the left boiler disappears on the contacts, how does it disappear and the boiler on the right immediately fails, the right one works stably! could it be a capacitor?

One contact on Izh U5 sparks strongly, how can I fix it?

The right cylinder does not work, when you remove the spark plug and bring it to the spark plug, a spark strikes and starts working, put it on completely - it does not work!

The spark is gone, there is spark on the cams, but not on the candles

If you can't give Jupiter a whirl, buy a planet!!

Guys, the contact sparkles and the right cylinder on Jupiter 5 works. Tell me

what to do if one cylinder on Jupiter 5 does not work? The right one does not work and the left one works. Please tell me what to do?

Adjust the ignition and change the driver

Why doesn't one cylinder work on the same Jupiter6 Spark is good

Hello everyone, tell me what to take planet 5 or yupaka5. I had planet 5 and didn’t like it.

Can you tell me where I can find the right cover for the IZH Jupitet 5. 3 engine.

Can you tell me how to adjust the idle speed on the Izh Jupiter 5?

On the carburetor, tighten the screw on the side until it stops, and then unscrew it 2.5 turns and the idle speed will be approximately

I went through the box on Planet 5, when I assembled it, it turned out that there were no neutral speeds, which could be why this was happening.

The worm shaft was not installed correctly. I’ll tell you straight away, throw out the box and install it from Iupak.

check all the washers

People, tell me why the neutral disappeared on Jupiter.

Do you mean disappeared? From the first to the second? If the motor is wound up and stands still, then it is very difficult to catch it. And while driving or switched off, neutral should always be

try adjusting the clutch, most likely you're just not used to looking for neutral

HELLO, I HAVE PLANET 5, UNEVEN TURNOVERS, UNSTABILITY, I LOOK AT THE CONTACTS, THE SPARK PERIODICALLY DISAPPEARS, WHAT COULD BE BLOWING, DID EVERYTHING CHANGE?

It is possible that the wire on the generator (cam wire) is in contact with the cover, and the contact is slightly burnt, causing unstable engine operation.

Tell me which reel is on the left and which is on the right.

bottom right and top left

for what reason does the contact spark?

change the capacitor. It’s better to get one from a Soviet car - it’s much more reliable

Guys, can you tell me what the problem is? On my Jupiter 5 one of the contacts is on when I replaced the ignition coil. What is the problem?

Most likely there is a short circuit in the coil.. put another one or change places

I can’t find out why the women are burning! I have already changed everything that was possible 3 times. I detect the operation of the second cylinder by increasing the gap at the contact, but with the usual ignition setting it does not work. Someone help me solve the problem.

You didn't connect the wiring on the bobbins correctly, check it again.

Tell me, is Jupiter 4k a normal motorcycle? Otherwise I’ve always ridden on Planet 4.

Don't even think about taking a four! This is the worst model of Jupiter! Of the Jupiters, the most successful model is the fifth! Trust my experience - I’m 53 years old, throughout my life I’ve had all the models that could be bought from us!

Malfunction of the ignition distributor

A faulty distributor can cause improper ignition of the mixture in the combustion chamber. Its main faults include:

breakdown of the lid;
slider failure;
oxidation at the attachment point of high-voltage wires, causing energy loss.

To identify the distributor as the culprit of the popping noise, it is recommended to install a known-good device in its place. If the shooting disappears, further diagnosis of the ignition distributor malfunction will be required.

Distributor

Adjusting the ignition of the Izh-Planet motorcycle

There is no need to tell you once again how difficult it is to start a “planet” with an incorrectly adjusted ignition. There were all sorts of funny things that happened because of a faulty ignition, some people’s sneakers flew high into the sky, some people’s shoe soles burst, sometimes there were even injuries, and very serious ones, there were even cases when the engine started in the opposite direction. All these troubles with the winding claw kicking back into your foot can be avoided if you adjust the ignition timing in a timely manner.

It is most convenient to make adjustments using a special device, which was once supplied by the manufacturer with every motorcycle; those days, as we know, are long gone, therefore, in order not to waste time looking for a device, you can get by with an ordinary caliper.

We begin work on setting up the ignition by adjusting the gap between the contacts of the breaker (0.4-0.6 mm). To do this: turn the crankshaft by the generator rotor bolt so that the contacts of the breaker diverge as much as possible.

We unscrew the bolt fixing the contact gap and use an eccentric to separate the contacts so that we can insert the feeler gauge between them, and slowly use the eccentric to clamp the feeler gauge so that it moves in and out with little effort. After adjustment, we tighten everything well and move on to adjusting the ignition timing.

We find the top dead center, insert the bore gauge into the spark plug hole (you must try to ensure that the bore gauge probe rests exactly on the center of the piston bottom), measure the depth, then extend the bore gauge by 3.5-4 mm, turn the crankshaft about a quarter turn counterclockwise, insert the bore gauge into the spark plug hole, and turning the crankshaft clockwise until it hits the bore gauge, this will be the ignition timing we need.

After we have set the ignition timing, let's now set the moment of opening the contacts at this position of the crankshaft, for this: loosen (just not much) first this bolt.

We take any low-power light bulb and connect it with one wire to the ground of the motorcycle and the other wire to the wire suitable for the breaker.

After we have loosened the bolts on the contacts, we need to turn the contacts all the way clockwise (the light should go out), then slowly turn the contacts counterclockwise until the light comes on, this will be the moment we need during which a spark will jump ( 3.5-4mm) to top dead center.

Carburetor in a motorcycle

It happens that the motorcycle shoots into the muffler and carburetor - this is often found on domestic Urals and imported choppers with a large cylinder capacity. The problem is a clogged air-fuel mixture at the inlet. To eliminate it, it is worth changing the filters and sealing gaskets, and also checking how tightly the pipes fit to the inlet fittings and whether there are any large cracks in them.

Very often, popping noises appear after replacing the muffler with a non-standard one or cutting holes in it to eliminate resistance to escaping exhaust gases. Particularly unpleasant sounds appear when installing a “direct flow”. The reason is the creation of a strong vacuum, which leads to a lean air-fuel mixture. Powerful imported motorcycles often use an exhaust gas afterburning system, which reduces their toxicity - after removing the standard muffler, its operation becomes clearly audible. To eliminate shots after changing the silencer, you must:

Reconfigure the carburetor or reflash the control unit.
Install filters with a different capacity.
Disable the exhaust gas afterburning system.

Motorsport → JUPITER 5 WORKS ON ONE CYLINDER! HELP WITH ADVICE!

Myth one. “If Jupiter Rings, then the fingers are worn out and the engine requires repair” An old topic that has been sucked a hundred times. The Jupiter air engine MUST knock at idle (no load). This is a feature, not a breakdown. The piston is not balanced and, when moving, knocks its sides against the cylinder walls. By the way, this disgrace has already been fixed on liquid-cooled engines - there the pin in the piston is shifted 6 mm upward to the bottom. There is no knock. If the Jupiter does not knock, then it is either converted to fit pistons from “dropsy” (this is possible, but unlikely :)), or the gap between the cylinder and the piston is simply small (usually less than 0.1mm). The minimum air gap should be 0.15 - no less, otherwise you will suffer from constant thermal seizures when driving for a long time at a speed of more than 80 km/h :). It’s better to ring than to jam somewhere far from civilization. And if you feel the urge to sell a motorcycle and the dad who buys your bike for your son doesn’t agree with this fact and assures you that your “fingers” are worn out, you don’t prove anything, because as a rule, dads are all smart and don’t want to listen to anything - “they’re they ate the dog when they were young,” and it’s easier not to argue, but to buy solid lubricant from the MC2000 store, remove the cylinders and lubricate the pistons with it. The gap will be eliminated, and so will the knock. Checked, the motorcycle is for sale immediately :). Myth two. “On Jupiter one cylinder is constantly malfunctioning.” Which? - as a rule, the speaker does not specify :). Well what can I say. Yes, it happens that a completely worn-out right bearing of the right crankshaft hits to such an extent that at high speeds the eccentric hits, and the cams meet, well, not at the desired ignition timing. Farts are heard at speeds above average (or even lower, when the patient is more dead than alive), and the engine becomes terribly dull. This problem is solved once and for all by installing a Hall sensor from a VAZ; a broken bearing will not remind you of itself and will allow you to calmly get home, or drive until it destroys everything else around it. :) But as a rule, the matter is different. Jupiter is two identical motors connected by a flywheel. EXAMPLE: a boy is riding on Jupiter; for example, his candle breaks. One cylinder stalls, but the guy doesn’t care, and he drives on, the coil closes, discharging in itself. Having finally begun to understand the cause of the “glitches,” the boy for a long time cannot find a breakdown in the character “it works, sometimes it doesn’t work.” He tells all his friends what a bad motorcycle Jupiter is, and buys a planet, which, if the engine stalls, does not move, unlike Jupiter, which in this case continues to move. (IMHO this is a huge plus). The point is purely in the user's attitude, and in the elementary understanding that if a cylinder has stalled, then it has stalled not because there are two of them, but because it has simply stalled :). and we need to figure it out, and not ride on another survivor. Jupiter is two motors. That's all.

Myth three. “Yu4 is the most unfortunate Jupiter, and it’s better not to mess with it at all.” This is partly true. At the factory, quite a few shortcomings were implemented in this version of the product, such as weak, due to technological manufacturing features, crankshafts with “reinforced” lower connecting rod heads, or a final drive with a narrow chain... but where did you see Yu4 In its original configuration. Many people probably already have Yu5 shafts, and a clutch too. And if both are equipped with “new” spare parts from the store, both of them will have the same “reliability”. In general, I do not recommend buying spare parts in a store. Especially on the CPG. I have cylinders on Yu4 with purging from Yu5 (including in the seat). cause nothing but horror. not to mention the quality of workmanship of this artisanal scrap metal. And from the gaskets for the cylinder with holes punched under the Y4 cylinder, and the blowing under the Y5, I generally beat in ecstasy. Crankshafts from the store last a maximum of 2000 km, and the forks on the box break and destroy the crankcase, jamming the gearbox. I advise you to buy motorcycles for spare parts at parking lots - many of them have original spare parts in the engine. They will last many times longer than store-bought ones. Collapse branch

Disturbances in the operation of the gas distribution mechanism

Starting the engine will be accompanied by shots into the carburetor if the timing phases are out of whack, that is, the drive has jumped several teeth. In this case, if the shift is 1-2 teeth, the engine will be able to operate, but there will be a loss of power. But with a significant timing shift, the valves can be damaged. In this case, you cannot do without engine repair.

Reasons that cause shift of the gas distribution mechanism drive:

when performing repair work on the engine, the phases are inattentively set;
belt replacement;
low tension, sufficient to cause slippage;
the car gets into an accident or a pothole;
Excessive wear of timing elements.

Installation marks for checking the correct timing of timing

To diagnose the malfunction, it is necessary to check the timing marks on the crankshaft pulley and the housing. Troubleshooting depends on the effects of phase shift. In some cases, it is enough to correct the operation of the timing belt, but if the pistons hit the valves, it is impossible to do without repairing the engine.

If you notice a timing shift, you should not try to start the engine, much less apply gas, checking the possibility of travel. Starting the internal combustion engine is possible only after the timing marks have been correctly placed and the cause that caused the shift has been eliminated. Otherwise, the motor may be significantly damaged.

Posts

About the motorcycle

I bought a motorcycle in the fall of 2012 in a neighboring village, based on an ad on the Internet. According to the photo on the Internet, the outside appearance was normal, at that time it still had the lining of the 4th model, or rather the engine from the 5th model stood on the frame of the 4th model. Also, the owner of the motorcycle gave the engine from the 4th model in addition, and the frame from the 5th model, which was taken later. When I came to buy it, the motorcycle was dirty. Despite this, it started from the first push - honestly, I didn’t expect it. The motor worked well. I asked for a ride. The engine pulled well. after all this we decided to buy it, since I didn’t have much of a choice. After the purchase, while driving home, the right cylinder failed halfway home. The engine overheated greatly and started smoking, I stopped and turned off the engine. After stopping, I tried to start the engine, but it was no use, it wouldn’t even start. And it wouldn't start at all. As usual, based on experience on the old Riga moped, I tried to do everything, checked the spark plugs, there was a spark, adjusted the ignition, and generally tricked it for half an hour. Started up. but the right cylinder still did not work. To avoid a wedge, we had to tow it by car the rest of the way. After arriving, I took off the stroller (yes, she has a light blue stroller) and started tinkering with this contact ignition. I changed the capacitor, reconfigured the ignition, installed normal working BOSCH spark plugs from the car. I'm trying to start it. I fired it up several times, and lo and behold, it started up and worked on both boilers! My joy knew no bounds, the engine roared cheerfully. Then I filled up with more gasoline and went for a ride with friends in my village. While I was riding, I was happy and smiling that I finally had my own normal motorcycle. I wasn’t driving fast, I was afraid to turn the handle more, the motorcycle was very fast for me. A month later, they brought a frame from model 5 without an engine, partially rearranged the trim from it... I installed a contactless ignition system on the hall sensor from a VAZ in the same year, and later soldered the optical sensor. The next year, the engine jammed, I had to inject it, and in one go I changed the consumables (except for the pistons). After reassembly, I completely got rid of the problem of the pot not working. The engine became faster and pulled many times stronger than before. In the summer I changed the pistons, tuned the panel a little, rearranged the lining from 4, prepared the lining from 5 for painting, bought the missing parts (carrots, covers, etc.) The motorcycle was then completely disassembled to paint the frame. The painting of the frame was completed back in August 2013, I started assembling the motorcycle, I really wanted to ride =). I bought turn signals, completely reassembled the wiring, adjusted the lights, and at the same time rode it without lining (it had a tank from 4 and a saddle). Later, in September 2013, we completed painting the cladding from model 5. a week after painting I installed everything on IZh. Well, so to speak, subscribe!! There will be a lot more interesting things, you can learn a lot, take it for yourself. Good luck with your improvements!

Motorcycle malfunctions - the engine does not start

The engine may also not start if there is excess fuel in the cylinders, especially on a hot engine.

There is no sparking on the spark plug electrodes

After making sure that the ignition key is inserted all the way (the control lamp is on and the signal is working), unscrew the spark plugs, check the gap between the electrodes and, connecting their bodies to ground, press the trigger lever several times. If there is a fairly good spark between the electrodes of the spark plugs, then the cause of the malfunction should be sought in the engine power system.

If during this check there is no spark between the electrodes of the spark plugs or it is very weak, then it is necessary:

Make sure the battery is charged; The control lamp should be fully illuminated and not go out when the signal is turned on.
Check the reliability of the battery contacts.
Test the fuse for serviceability.
Remove the tip of the high voltage wire from the spark plug, bring it to the ground at a distance of 1.5-2 mm and, pressing the trigger lever, check for the presence of a spark between the ground and the tip. The presence of which indicates a faulty spark plug (insulation breakdown) that should be replaced. If there is no spark, make sure that the high voltage wires are in good condition.
Inspect the condition, clean and adjust the gap between the breaker contacts.
If necessary, replace the anvil and hammer.
Turn on the ignition and open the breaker contacts by hand. If a yellow weak spark jumps between them or there is no spark, then replace the capacitor.
If after performing all the previous operations there is still no spark, then the ignition coil should be replaced.

There is no fuel supply to the motorcycle carburetor

We press the drowner and fill the float chamber to make sure that fuel is present. If there is no fuel, check the serviceability of the carburetors themselves. If there is no filling, it is necessary to find the fault and eliminate it.

Check the presence of gasoline in the tank and its quality (the presence of water, large amounts of oil and mechanical impurities is unacceptable).
Inspect and, if necessary, clean the air hole in the fuel tank cap.
Disconnect the fuel lines from the carburetors and blow them out one at a time with compressed air.
Remove the sump and fuel tap filter, disassemble, wash in gasoline and after assembly blow with compressed air.

Carburetors are faulty or misadjusted

Remove, disassemble, wash the parts in gasoline and blow out the jets with compressed air.
Reinstall and check the fuel level in the float chambers. When installing, pay attention to the condition of the gaskets and the reliability of tightening the nuts securing the carburetor to the cylinders.
make quality adjustments as stated in the instructions.

What do the shots affect?

Problems with the ignition system do not bode well. In such a situation, with prolonged engine operation, not only the aesthetic impression can deteriorate. A dirty carburetor or low-quality fuel will eventually disrupt cylinder compression, which in turn will lead to engine failure.

To understand why your motorcycle is shooting at the muffler, you should check the problem areas. Here are possible ones:

not tightness of the pipes that can suck in air, or the exhaust tract;
faulty spark plugs;
dirty air filters or carburetor;
difficulty in supplying fuel;

However, the problem may also be with the racers' rev limiter. The spark plugs do not charge continuously, causing most of the mixture to go straight into the exhaust system, where it hits the hot metal and ignites, creating a loud bang.

The left cylinder of Izh Jupiter 5 does not work

The healing has been adjusted many times and now it is aligned perfectly! The carburetor is also fine, but such a problem! Jupiter works on one or two cylinders! I do not know what to do ! I've already tried everything! I changed the women and sorted out the wiring. it still works when driving! more often on the left! When the right one works, the left one turns off. what to do.

Post by jesvi » Jul 28, 2022, 12:03 pm