Why does my car puff blue smoke when I start it?

Blue smoke indicates your car engine is burning oil. It can happen when the piston rings, the valve guide seals, or other components of the engine get worn out or damaged, causing oil to leak. The oil will flow into the combustion chamber, and then it is being burnt together with the fuel, creating blue smoke.

Why is my BMW smoking when I start it?

When the engine is shut off and sits for long periods of time, the oil keeps draining from the engine into the turbo, causing too much oil to collect inside the turbo and during cold start the oil is blowing past the turbo seals, causing the puff of smoke.

What causes an engine to smoke on startup?

Smoke often leaves car engines as a result of overheating. This can be caused by faulty wire casings, heated residues on the engine block and overheated liquids including oil, transmission fluid and brake fluid. There may also be a fault in your coolant system, or your engine may not have enough lubricant.

What does Blue smoke from the tailpipe usually indicate?

Blue/gray exhaust smoke means there’s likely an oil leak and your engine is burning oil. Time to have a qualified technician check things out. The leak could be caused by several issues like leaking valve seals, damaged piston rings, or worn cylinder walls.

When I start my car smoke comes out the exhaust?

Many times, this thick smoke is due to the likes of a blown head gasket, damaged cylinder, or a cracked engine block, which is causing coolant to burn. Thick white exhaust smoke usually indicates a coolant leak, which could cause overheating and put your engine at a serious risk of damage.

Can too much oil cause blue smoke?

The most common cause of blue exhaust smoke is oil leaking past engine seals and into the cylinders where it then mixes and burns with the fuel. It only requires a very small amount of oil leaking into the cylinders to cause excessive blue exhaust smoke.

Can 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.

Can low 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 a Porsche 02 996 smoke on startup?

Hey guys – once in a while my 02 996 (80k miles) will smoke on startup, but it goes away after about 2 minutes. Sometimes it seems like a good deal of smoke. Some weeks I’ll go without it smoking at all.

Why do I get white smoke when I start up my Porsche?

Over the last few days I have noticed a little burst of white smoke on start up. I have been trying to monitor it and have so far established that it only happens on start up, once it has been sitting a while. It does not appear to happen when running, just on start up.

When to replace AOS in Porsche 02 996?

At 80K your AOS is past due for replacement. More then likely that’s what’s gone. Even if it’s not I’d replace it anyway. Make sure to let your car idle for a bit before shutting it down.