Why does the engine on an alpha moped smoke a lot?

BLUE SMOKE

Oil getting into the cylinders is the most common reason for its regular appearance. The smoke itself can have a whole range of different tones: from unclouded bluish to a rich bluish tint. The blue smoke does not immediately dissipate in the air, and when performing a test with a piece of paper, dirty, oily droplets are left on it, which come out along with the exhaust gases. There are several key reasons for the blueness of smoke:

Damage to valve stems, guide bushings and wear of valve stem seals. They noticeably increase the amount of smoke while the engine warms up.
Excessive oil consumption is observed in engines that have a turbocharger. Cause: A faulty turbocharger, which you will most likely need to replace.
Malfunctions of the ventilation system. Its task is to separate the oil and adjust the flow rate. It needs to be reconfigured or replaced.
When blue smoke appears from the muffler, you must closely monitor the oil level so that it is normal, and be sure to monitor the serviceability and suitability of the piston group parts.

If you notice that oil is being consumed faster than usual, this is a clear sign of a ventilation problem. The cost of replacement is low, so there is little point in repairing it. It's easier to buy.

Why does a 4t scooter (four-stroke) smoke?

Here things are already a little different. The nature of a four-stroke engine is determined by the lubrication of parts in a separate oil bath, which is in no way connected with the combustion chamber. The obstacle, in this case, is the oil scraper rings , which actually prevent the oil from burning along with the gasoline. The cause of smoking in a four-stroke engine is most often the presence of oil scraper rings in the piston groove or its wear. Now it does not remove oil from the cylinder walls during operation, and with each power stroke, part of the lubricant burns at top dead center. Naturally, this is a breakdown that needs to be fixed.

Sometimes, many people confuse steam from the exhaust pipe with smoke. Water in the form of steam is a sign of high humidity in the exhaust system. In an unheated exhaust system, moisture from the air partially condenses and becomes visible, and water usually appears at the cut of the exhaust pipe. And as the system warms up, condensation and steam disappear. This is a common occurrence.

Troubleshooting

If the scooter is smoking, you can fix it yourself with your hands growing from the right place. So, let's start the renovation.

Rich mixture

A rich mixture means that the carburetor is supplying little gasoline and a lot of air to the cylinder. To adjust this ratio, a quality screw is used . To establish the optimal ratio, you need to unscrew this screw, thereby adding air and reducing gasoline in the ratio.

The optimal value is set experimentally once normal operation of the internal combustion engine is achieved. Normal operation is characterized by the absence of increased emissions and normalization of the traction characteristics of the scooter.

Advice! If you drove with a rich mixture, be sure to clean the spark plug or replace it with a new one. With the spark plug removed, crank the engine with the starter so that the piston pushes the excess out of the cylinder.

Bad oil

After changing the oil, a 4-stroke scooter may smoke. This happens when low viscosity oil is poured into the engine. For example, synthetic oil is less viscous than semi-synthetic or mineral oil, meaning it is thinner. Such oil seeps into those gaps where the more viscous oil gets stuck.

Therefore, even with little wear on the piston group, oil can enter the exhaust and smoke there. Replacing the oil with a thicker one eliminates this problem. If you stubbornly want to drive with just such oil, then you should do a major overhaul of the piston.

Piston group

To be completely sure, it is necessary to remove the cylinder and inspect it and the piston group. Please note the following:

cylinder mirror (scratches, chips, oval deformation, etc.)
piston (carbon deposits, chips)
rings (gap, bedding, integrity).

If a malfunction is detected, the part should be replaced with a new one.

Remember! It is better and more economical to immediately change all the necessary parts (piston group) than to remove the cylinder every time because of one.

Cylinder gasket

With the head removed, it is easy to determine the integrity of the head gasket. It is recommended to replace the gasket if the scooter produces white smoke.

How to determine why white smoke is coming from the exhaust pipe of a gasoline engine

Look into the expansion tank to see if there is any sediment or emulsion film there. Sniff: a foreign smell from the container is a bad sign.

Check the level and condition of the engine oil: there should be no water in the lubricant. Unscrew the spark plugs: carbon deposits are found - the fuel does not burn completely. Some experienced technicians, if the spark plugs are wet, taste the liquid on their tongue: a sweet taste means antifreeze has entered the system.

Paper check

Determine the nature of the exhaust (steam or smoke?) using a clean sheet of paper or a white napkin. Start the car and let the engine run for a short time. Bring the stored items to the muffler (do not lean close to it).

White smoke is pouring out

Examine the imprint left behind:

if there is water in the pipe, the paper remains clean and will soon dry;
if it is oil, you will see a greasy stain;
Coolant will leave a blue or yellow mark.

The components on the napkin will emit a specific odor.

Emulsion on the lid

The coolant contains ethylene glycol. If, due to depressurization of the oil and cooling circuits, the components are mixed, an emulsion is formed. You can see the dangerous substance under the expansion tank cap: light foam or film will collect here.

How to Find and Fix Engine Smoke Problems

If you want to troubleshoot a small engine yourself and repair it.

Step 1: Are you tilting the engine or running it at an angle greater than 15 degrees? Leaning the mower or equipment may cause leakage. Level the car before proceeding.
Step 2: Checking and changing the oil is an easy way to fix such problems. Check to see if the oil is overfilled or if you are using the wrong grade/type of oil.
Step 3: Check the crankcase for leaks.
Step 4: Is the cylinder head gasket blown?
Step 5: Are the rings and/or cylinder worn?

Overheat.

Plug Type: Extremely white insulator with small black flecks and premature electrode erosion.

Consequences: loss of scooter power at high speed or under load.

Probable causes: the spark plug is not screwed in enough; The scooter's engine cooling system is not working properly; ignition of the scooter too early; The thermal range is incorrectly selected - the candle is too “hot”.

Remedy: check the torque of the scooter's spark plug; operation of the scooter engine cooling system; adjust the ignition timing; select the correct spark plug heat rating.

Type of spark plug: melted and burned central and grounding electrodes (or one of the electrodes) of the scooter spark plug; bubbling insulator with metal deposits on it.

Consequences: significant loss of scooter engine power; ignition interruptions. Continued use of such spark plugs may cause serious damage to the scooter engine.

Probable causes: thermal overload; significant overheating of spark plug parts due to glow ignition - combustion begins before a proper ignition spark appears; use of low-quality fuel; burning out of the remaining air-fuel mixture in the combustion chamber due to an incorrectly adjusted fuel system of the scooter or the ignition timing of the scooter; The thermal range is incorrectly selected - the spark plug is too “hot”.

Remedy: check the scooter engine, ignition system and fuel system, as well as the quality of the working mixture and the ignition timing of the scooter. Install new spark plugs with the correct heat rating.

Source

AP 156 – smokes – eats oil!

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AP 156 – smokes – eats oil!

Alfist156 » Mon Jun 01, 2009 3:20 pm

Good day, brothers, dear Alfists.

I have a question for you, there is an Alfa Romeo 156 1.8

At times, increased smokiness was noticed behind the alpha. The smoke is white

In first gear when you are driving, the cars behind you get the feeling that an old Ekarus is driving ahead. The oil consumes somewhere from 600 to liters per 1 thousand.

It may not smoke for a day or two, then there will be a lot of smoke...

In the near future I want to send the removable caps for repairs to replace the oil.

Question. To repair your head, what should you buy right away? so as not to get stuck on the service???

gaskets, oil pullers, guide bushings???

What role does the VAZ variator play in this matter? The car works fine, not diesel.

When my alpha is broken, a tow truck helps me in Pskov

www.777-222.ru

thanks guys

)

Alfist156 alpha owner Messages: 297 Registered: Mon Jun 01, 2009 2:57 pm From: Pskov Auto: ar156

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Re: AP 156 – smokes – eats oil!

oilman » Mon Jun 01, 2009 5:11 pm
If I'm not mistaken, white smoke is antifreeze. Either a gasket or a crack in the block

If you give a person the necessary knowledge, pay a salary and don’t interfere, the person starts working!

oilman alpha owner Messages: 418 Registered: Tue Jan 29, 2008 8:20 pm From: Moscow, South-Western Administrative District Car: AR 156 TS SW

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Re: AP 156 – smokes – eats oil!

Sergio_RSM » Mon Jun 01, 2009 7:18 pm
If the white is smoke and not steam, then these are most likely piston rings - the engine runs on a mixture of gasoline and oil

. How much butter does he eat? What's the mileage?

Alpha lover

AR 156 SW – Sold

Sergio_RSM alpha owner Messages: 918 Registered: Mon Dec 22, 2008 8:51 pm From: Taganrog Car: VW Jetta

Re: AP 156 – smokes – eats oil!

Sergio_RSM » Mon Jun 01, 2009 7:25 pm
Sorry, I didn’t notice about the oil - a liter per thousand is a lot for anyone, especially if you don’t burn it constantly. As for what to buy, in this case only an autopsy will tell...

Good luck!

Alpha lover

AR 156 SW – Sold

Sergio_RSM alpha owner Messages: 918 Registered: Mon Dec 22, 2008 8:51 pm From: Taganrog Car: VW Jetta

Re: AP 156 – smokes – eats oil!

mxo » Mon Jun 01, 2009 8:47 pm

Sergio_RSM wrote:
If the white is smoke and not steam, then these are most likely piston rings - the engine runs on a mixture of gasoline and oil
. How much butter does he eat? What's the mileage?

White smoke is steam; there is no other white smoke from the exhaust pipe.

And what does the rings have to do with it if the smoke is white??? oil burnout - blue smoke, black smoke - fuel overflow.

2 Alfist156 Check the coolant level in the tank, if it leaves, it is quite possible that the gasket is already dying.

Why did you decide to go over your head? For that matter, all gaskets, seals, hydraulic valves, oil scrapers,

at the same time, the variator, although it has nothing to do with smoke, but since it’s already been disassembled, it’s better to change it right away,

as well as a pump with timing belts and rollers.

Alfa Romeo 156 2.0 Twin Spark. Sport Pack. You cannot be a true petrol-head until you've owned an Alfa. © JC

mxo alpha owner Messages: 1065 Registered: Sat Mar 03, 2007 10:19 am From: Czech Republic. Praha. Auto: 156 2.0 TS

Re: AP 156 – smokes – eats oil!

Alfist156 » Tue Jun 02, 2009 9:23 am
Then it will be called capital if everything changes right away... I would like to get by with little expense. She's rushing like a tank. I asked the guys how much it would cost to replace the piston rings, timing belt, and oil scraper. seals and gaskets. They asked for 15 thousand + spare parts for the work. And if you just change the oil scrapers, gaskets, timing belt, seals and guides, then the labor costs 5 thousand+ spare parts…. I think the oil scrapers are just dead... There are no extraneous sounds in the engines. It’s not clear why I smoke today and not tomorrow. This bothers me... Maybe it smokes due to bad oil? I use semi-synthetic 10w 40 =) crazy idea =)

When my alpha is broken, a tow truck helps me in Pskov

www.777-222.ru

thanks guys

)

Alfist156 alpha owner Messages: 297 Registered: Mon Jun 01, 2009 2:57 pm From: Pskov Auto: ar156

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Re: AP 156 – smokes – eats oil!

clientus » Tue Jun 02, 2009 11:20 am

Alfist156 wrote: Then it will be called capital if everything changes right away... I would like to get by with little expense. She's rushing like a tank. I asked the guys how much it would cost to replace the piston rings, timing belt, and oil scraper. seals and gaskets. They asked for 15 thousand + spare parts for the work. And if you just change the oil scrapers, gaskets, timing belt, seals and guides, then the labor costs 5 thousand+ spare parts…. I think the oil scrapers are just dead... There are no extraneous sounds in the engines. It’s not clear why I smoke today and not tomorrow. This bothers me... Maybe it smokes due to bad oil? I use semi-synthetic 10w 40 =) crazy idea =)

10doubleY40 is not Her oil. Synthetic, 10 doubleY60 Her oil. Once.

Second. This happened when I was overfilled with the maximum oil level (by the way, at the same time the oil seal was squeezed out). I had symptoms - irregular black smoke at high speeds.

clientus Alfa Danko Messages: 3167 Registered: Thu Jul 17, 2008 6:33 pm From: RnD Auto: 147 Ti

Re: AP 156 – smokes – eats oil!

Alfist156 » Tue Jun 02, 2009 3:59 pm
Is it really necessary to pour 10w60 into alpha??? Synthetics??? and because I poured 10 w 40 could something bad happen? When I bought the car it didn’t smoke =( this happened after changing the oil(

When my alpha is broken, a tow truck helps me in Pskov

www.777-222.ru

thanks guys

)

Alfist156 alpha owner Messages: 297 Registered: Mon Jun 01, 2009 2:57 pm From: Pskov Auto: ar156

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Re: AP 156 – smokes – eats oil!

Sonne » Tue Jun 02, 2009 6:53 pm

clientus wrote: 10doubleY40 is not Her oil. Synthetic, 10 doubleY60 Her oil.

Why this? The manual recommends 10w40.

Sonne veteran Messages: 2668 Registered: Sat Mar 08, 2008 10:07 pm From: Elektrostal, MO Car: Mazda 6 2.0 Sport

Re: AP 156 – smokes – eats oil!

Cuore_Sportivo_146 » Tue Jun 02, 2009 8:34 pm
Maybe the crankcase ventilation is clogged, look... And now I’ll say a terrible thing, but even if you pour 20VE40 into it, it won’t do anything under normal loads in the summer, and it doesn’t care about the brand on the canister.... and Selenia is not the highest quality oil, I think

Cuore_Sportivo_146 Troll [Bot] Messages: 663 Registered: Tue Sep 25, 2007 10:49 pm From: Moscow

Re: AP 156 – smokes – eats oil!

GydruS » Wed Jun 03, 2009 8:22 am

sonne wrote:
clientus wrote: 10doubleY40 is not Her oil. Synthetic, 10 doubleY60 Her oil.
Why this? The manual recommends 10w40.

They recommend 10w40...

But I made a choice for myself: 5w50 or 10w60 and it’s synthetics - it produces less waste! “breathes” easier at the top =) It costs more, it’s true, but not much.

Alpha is a car that you have feelings for! Ex. '01 156 2.0 TS.SS.SP :'( NSGV 3.2 2008 LE

GydruS Our man from the Far East Messages: 996 Registered: Mon Feb 26, 2007 12:45 pm From: 77 Auto: NSGV 3.2

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Re: AP 156 – smokes – eats oil!

Alfist156 » Thu Jun 04, 2009 10:24 am
And I noticed another trend... I poured Castrol synthetics and used Helix, the oil burned instantly, I filled it with Mobile semi-synthetics. Less oil is consumed and there is less smoke... I changed the oil yesterday... There was actually less smoke... Some kind of bullshit

When my alpha is broken, a tow truck helps me in Pskov

www.777-222.ru

thanks guys

)

Alfist156 alpha owner Messages: 297 Registered: Mon Jun 01, 2009 2:57 pm From: Pskov Auto: ar156

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Re: AP 156 – smokes – eats oil!

Alfist156 » Wed Sep 09, 2009 5:08 pm
I don’t know if I should say it or not. In general, I had a breakdown in the pipe that clings to the air vent. The revolutions fluctuated from 500 to 1700. Now the revolutions are strictly kept in the region of 1000-900. And the smoke has decreased. There is no smoke at all when the engine is warm. If you sit at idle for a long time and accelerate, then smoke comes out... And another question, maybe there are instructions for checking the crankcase ventilation. Is it clogged or not? Procedure.

When my alpha is broken, a tow truck helps me in Pskov

www.777-222.ru

thanks guys

)

Alfist156 alpha owner Messages: 297 Registered: Mon Jun 01, 2009 2:57 pm From: Pskov Auto: ar156

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Re: AP 156 – smokes – eats oil!

mxo » Thu Sep 10, 2009 1:36 am
From the camshaft cover there are two pipes to the intake duct, one before the damper and the other after, the one after there is a valve, it opens at high speeds, at idle it should be closed.

mxo alpha owner Messages: 1065 Registered: Sat Mar 03, 2007 10:19 am From: Czech Republic. Praha. Auto: 156 2.0 TS

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Engine Features

Two-stroke scooters tend to burn oil along with gasoline. Therefore, every two-stroke scooter will smoke, because the oil burns anyway. Japanese two-stroke scooters often smoke, as you may have noticed more than once. But what makes the difference is how much smoke your scooter will produce.

Reasons why a 2-stroke scooter smokes:

smoke from a japanese scooter

If you notice this on your 2-stroke scooter, do not worry, because this is almost a standard phenomenon that occurs with all engines.

2 stroke scooters

It’s worth noting right away that two-stroke engines will always smoke.
The whole point is the principle of operation of a 2-stroke engine. Recalling the theory of engine operation, let's say that unlike a 4-stroke internal combustion engine, where oil is poured into the crankcase, on a 2-stroke engine the lubrication process occurs differently. These engines have a dry sump and are internally lubricated by adding oil to the fuel. On scooters, a separate oil tank is installed, or a ready-made mixture of gasoline and oil is poured into the gas tank. The constant presence of oil in the combustion chamber of the engine provides smoke from the exhaust pipe.

However, if the scooter smokes heavily, this indicates a malfunction. At best, the driver poured too much oil into the gasoline. In other cases, the reason lies deeper in the engine. These reasons are similar to a 4-stroke engine, so let’s consider them using the example of such an internal combustion engine.

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If you often observe smoke from the exhaust pipe of your scooter, then before you panic, remember what engine is installed on your device. Two-stroke or four-stroke?

Two-stroke smokes

However, even such scooters should not “smoke” too much. If you notice that your scooter is smoking excessively, there may be several reasons for this. Firstly, you should definitely check the oil pump; if configured incorrectly, more oil may pass through it than necessary. Secondly, check the piston. A worn piston is one of the main causes of excessive smoking. First of all, check the rings. If the rings are worn out, then the compression may not be strong enough in the cylinder, as a result of which the fuel mixture simply does not burn out.

The spark plug should also be replaced if necessary. A faulty spark plug can cause misfire, which will also cause heavy smoke from the exhaust pipe. Sometimes simply replacing the air filter is enough. If it is clogged, the engine will not have enough air to completely burn all the mixture in the cylinder. Another reason for heavy smoke from the exhaust pipe may be a mixture that is too rich. If the mixture is very rich, the air will burn, but the fuel will still remain. In some engines, such as upright Honda scooter engines, when the oil seal leaks, oil can accumulate in the crankcase, which will certainly burn when the engine starts and warms up, generating a lot of thick black smoke. Maybe you just added too much oil to the gasoline. This is usually done when running in and traveling long distances. In this case, there is no need to worry. Also, during long trips at low speeds, oil can accumulate in the muffler, which then burns out when the owner gives gas.

Four-stroke smokes

Causes of engine smoking

The list of main faults that cause increased smoke formation includes:

The appearance of smoke can be caused by incomplete combustion of the fuel-air mixture, failures in the combustion process, or the ingress of coolant from the cooling system or engine oil from the lubrication system into the combustion chamber. These faults can color the exhaust gases a certain color.

As an example, consider the ineffective operation of the engine cooling system. Insufficient cooling leads to engine overheating and destruction of the piston rings. Problems with the rings mean that oil starts getting into the cylinders and the engine smokes.