Blue Smoke coming from exhaust of scooter after a month of engine rebuild

Why does my engine smoke after rebuild?

Most freshly rebuilt engines will throw some blue smoke out of the exhaust for the first couple hundred miles. This is due to the piston rings not being fully seated to the cylinder bore. There is a reason why this is called the ‘break in period’. Once the rings have fully seated, the smoke will clear up.

How long will engine smoke after rebuild?

It is common for engines to be protected for at least one year or 12,000 miles after they have been repaired.

What causes blue smoke from motorcycle exhaust?

Blue smoke is usually caused by oil getting past the piston rings and burning in the combustion chamber. If you notice blue smoke during acceleration or on deceleration, check your engine oil level. If it is low, then you need to replace your piston rings and inspect the cylinder walls for any damage or blemishes.

What causes an engine to produce blue smoke?

Blue smoke occurs when oil mixes with gasoline in the combustion cycle. It can also be caused by oil dripping onto hot engine parts. In some cases, blue exhaust smoke is a sign that a part has failed, such as the turbocharger or PCV valve.

Is a new engine supposed to smoke?

Do Brand New Engines Smoke? In some newly rebuilt engines, the blue smoke from the exhaust will last for about 100 miles after the engine is rebuilt. Due to a delay in the fully seated Piston Rings, it is causing this problem. The reason for it being known as the ‘break in period’ is unclear.

Will a bad PCV valve cause blue smoke?

If the PCV valve failed, it would essentially keep mixing the engine oil with air and gases inside the engine. And the vehicle would emit blue smoke from the exhaust upon combustion of this mixture. A bad PCV valve could cause major engine trouble if ignored.

What causes white smoke from exhaust when accelerating?

When you detect white smoke from the exhaust when accelerating or even during start-up and warm-up, this indicates that your vehicle’s engine is absorbing too much transmission fluid from the vacuum hose or line, resulting in burning oil and a noticeable burnt smell.

What causes white smoke from exhaust smells like gas?

White smoke from unburned fuel vapor smells like raw gas (because it is raw gas), so there’s no mistaking it for water/coolant-induced white smoke. In even rarer cases, a hot muffler or catalytic converter may cause the fuel vapors to ignite, blowing the exhaust system clean off the vehicle.

What does it mean when your car is smoking but not overheating?

The most common answer to, “Why is my car smoking but not overheating?” is that there’s a type of fluid that’s landed on the engine. This can be motor oil, fuel, transmission fluid, coolant, or even condensation. It can cause your engine to smoke because it’s burning off that fluid from the engine.

What does Blue smoke indicate?

What Does Blue Smoke Mean? Blue smoke means oil has mixed with your gas in the combustion cycle, and that oil is being burned up and sent out your exhaust pipe with the rest of the partially burned fuel.

What does blue exhaust smoke mean?

2. Blue Smoke. Blue smoke can often look like grey smoke at first. But if you notice a distinctive bluish tint, it may signal that the engine is burning lots of oil. This could be due to worn engine components like piston rings, valve seals, or PCV (Positive Crankcase Ventilation) valves.

Can wrong oil cause blue smoke?

Blue Exhaust Smoke

If you are noticing blue smoke from the exhaust, it means your engine is burning oil due to an oil leak. This symptom could be the result of a leaking valve seal or a problem with a piston ring.

Can spark plugs cause blue smoke?

Other possible causes of blue exhaust smoke include: piston wear, worn valve seals, a dirty or non-functioning PCV valve, worn piston rings, an intake manifold gasket leak, worn engine oil seals and possibly even head gasket failure. Oil leaking into the cylinders can cause a rough idle, misfire and fouled spark plugs.

Can thin oil cause blue smoke?

Oil leaking into the cylinders can cause a rough idle, misfire and fouled spark plugs. In addition, a reduction in power and oil loss can be indicators that the blue exhaust smoke is caused by an internal engine oil leak.

Can too much engine oil cause smoke?

The symptoms of too much car oil

If it is overfilled, the following may occur: Dense white smoke – If you drive your car and see plenty of thick, white exhaust smoke, excess oil may be burning within the engine block, although fluids such as antifreeze may also be the culprit.

What happens if engine oil is overfilled?

When too much oil is added, the level in the oil pan becomes too high. That allows a fast-moving lobed rod called the crankshaft to come into contact with the oil and essentially aerate it. The result is a foamy, frothy substance that cannot properly lubricate the engine.

Can bad oil cause smoke from exhaust?

In this case, bad seals or piston rings cause oil to leak into combustion chamber which then mixes with fuel and burns. The result is a white or light bluish smoke that comes out from exhaust manifold.