Blue smoke is excess lubricating oil present within the engine cylinders during combustion. This oil burns and exits through the exhaust as blue smoke. Common causes include too much oil in the crankcase, worn piston rings, or a blown turbo.

Jun 6, 2023 · Blue smoke coming from the exhaust is often a sign that the engine is burning oil or some other contaminant has gotten into the internal combustion chamber and/or the car’s exhaust system. There might also be an issue with the positive crankcase ventilation valve that’s failed to regulate the pressure in the crankcase itself.

Excessive blue exhaust smoke can present itself for several reasons. 1. Blown Head Gasket. Blown head gaskets are famous for leaking excess oil onto hot surfaces. Blue smoke indicates that lubricating oil has made its way into the hot exhaust …

Mar 15, 2023 · Blue smoke from the exhaust means that the engine oil is mixing 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.

Oct 9, 2019 · A very common problem that affects all vehicles (including the Volkswagen Transporter) is blue smoke coming from the exhaust. Reasons for blue exhaust smoke include bad valve seals, valve train wear in general, the PCV valve, burning transmission fluid and more.

Nov 17, 2024 · The blue smoke from a van may be caused by the following reasons: 1. Oil burning: This is one of the most common causes. When engine oil burns, it produces blue smoke. This condition can be caused by oil leaks or wear and tear of internal engine components such as piston rings and valve oil seals. 2.

There are a number of possible causes for blue smoke coming from your engine – and that is why we’ve produced a 90-second animation to show you the most likely reasons for the problem. This overview pinpoints the most likely causes – and none of them are good.

Mar 11, 2022 · When a car is producing blue smoke it means oil is getting into the combustion chamber for one reason or another and being burnt along with the normal gasoline. This creates a blue colored smoke which is passed down the exhaust system and then exits the …

Blue exhaust smoke coming from the exhaust pipe on a Transit Custom. At first sight this exhaust smoke seems white but it has a blueish tone, a certain density and a particular smell, like something is burning. Moreover, its volume increases …

Jun 11, 2012 · Blue smoke on most vehicles indicate burning engine oil instead of fuel. This usually is related to rings or valve stem seals being worn. White smoke is usually antifreeze, black smoke is usually overfueling.