Why is my BMW engine smoking?

Oil Spillage and Leakage – If there’s smoke rising from your engine, but no overheating, it’s likely that oil was spilled on the engine. It could also be that you have an oil leak, due to faulty parts or seals. (You might also see smoke from the exhaust.)

Can valve seals cause smoke?

High Levels of Smoke Another indicator of a faulty valve seal, as mentioned above, is the high presence of smoke. It’s common for some exhaust smoke to be present when you first start your vehicle, but if it begins to last longer than normal, your valve seal may be deteriorating.

What BMW has a N62?

The BMW N62 is a naturally aspirated V8 petrol engine which was used in BMW cars from 2001–2010. It also remained in small-scale production for the Morgan Aero until 2019….

BMW N62
Fuel type	Petrol
Chronology
Predecessor	BMW M62
Successor	BMW N63

How do engine valves get burnt?

Burnt valves occur when the valve can no longer seal correctly after excessive temperatures have damaged the material of the valve. When this happens, combustion gases are able to escape. These gases will start to burn the edges of the valve as they are forced through it.

How do I know if my valve seals are bad or piston rings?

The final indicator of a poor valve seal is a lack of acceleration power. You can also perform a compression test to see if this is the case. A higher level of compression will indicate that it’s a valve seal problem, while a low level of compression will indicate a piston ring problem.

How do I know if I have valve seals or piston rings?

Remove the EFI fuse and crank the engine. Then check the results on the compression gauge. In the event your compression test results appear to be average or higher, the valve seals are likely the problem. However, low compression usually indicates that the piston rings are your problem.