What causes blue smoke in a diesel engine when accelerating?

What causes blue smoke in a diesel engine when accelerating?

Blue exhaust smoke in a diesel vehicle could still mean oil is being burned, but it could also mean the engine oil is being atomized. This could be caused by: High engine oil levels. Worn out piston rings.

Does Blue smoke mean running rich?

Blue or grayish smoke means you’re burning oil. Aside from problems like poor mileage, acceleration, starting and rough idle, burning oil means you’re losing it, which is never a good thing.

What causes smoke on startup?

Usually it’s due to worn piston rings or wear on the cylinders themselves. The valves sit right on top of the cylinders and when the seals are worn out, oil leaks into the combustion chambers and burns together with the fuel. Sometimes after a car has been parked for a while, blue smoke is noticeable on start up.

How do you fix a blue smoke from a diesel engine?

Here is how to fix these problems:

1. Clean The Engine. Have you checked the engine yet?
2. Fix Valve Seals. Replacing Valve seals is not too hard and can be done at home by someone who can work on engines comfortably.
3. Fix Bad Glow Plug.
4. Fix PCV Valve.
5. Fix Blown Turbo.
6. Fix Transmission Modulator.

Can a bad O2 sensor cause blue smoke?

When operating properly, the O2 sensor cannot cause your engine to smoke. If your car runs excessively lean for an extended period of time, you could cause serious engine damage, resulting in black, white or blue smoke from the exhaust, but usually you will be alerted to other symptoms first, such as rough running.

Is it normal for a car to smoke on startup?

Can a bad turbo cause blue smoke?

If your car has a turbocharger, a blown-out turbo may be causing the blue cloud behind your car. A blown-out turbo can be identified by a broken or damaged oil seal. In this case, oil gets sucked into your engine’s combustion chamber. There, oil mixes with fuel and leads to blue smoke.

What makes blue smoke from exhaust when accelerating?

Once the engine is warmed up, the use of the glow plug is not necessary as the heat of the engine makes ignition of diesel fuel. If a diesel engine has a bad glow plug, it will create blue smoke at startup until it has warmed up. What Makes Blue Smoke From Exhaust When Accelerating? 1. Stuck PVC Valve

What causes engine to smoke upon startup?

July 6, 2016, 5:15am #5 Another possibility other than valve seals or guides could be oil sludge in the valve train area. This can plug up oil return holes and cause oil pooling in that area. With the engine off oil oozes past the seals and guides and ergo, smoke upon startup.

What causes blue smoke coming out of the valve seals?

Oil is used to cover the top of the valves where the rocker arm applies pressure. There are valve seals to prevent this oil from flowing into the engine. If these valves are worn or broken, the oil will come into the engine, then is burnt along with the air and gasoline, causing blue smoke.