What causes blue smoke when I start my car?
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.
Why does my car smoke intermittently?
Intermittent blue smoke can be caused by a combination of factors, but most frequently it is caused by worn valve seats – a critical part of the engine. In diesel engines, a pale blue smoke may mean that you have air in the fuel system, which would also mean you have a problem with your fuel pump or the fuel pipes.
Will a bad PCV valve cause blue smoke?
If the PCV valve gets stuck, it will keep mixing the oil with air and other gases inside the engine. The combustion of this mixture will cause blue smoke.
What causes blue smoke and Hegging in a engine when starting?
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. Blue exhaust smoke only at start-up can indicate worn piston seals or damaged or worn valve guides which may also cause a rattling noise.
Can wrong oil cause blue smoke?
One of the most common causes of oil leaks, which can lead to blue smoke, is the hardening and shrinking of engine seals.
Is blue smoke from exhaust bad?
Blue smoke from a car exhaust is generally a bad sign, and the cause of it will need to be repaired as soon as possible. It’s either a problem to do with the oil, or internal engine components.
What does Blue Smoke on early morning startup mean?
Get a second opinion. Blue smoke on early morning startup usually means bad valve seals but not always. Sludge can cause oil to remain under the valve cover (s) and not drain back properly. When this happens no valve seal in the world can keep the oil out of the combustion chamber.
Why does my Toyota rabbit have blue smoke?
While this can cause problems over time, such as fouling the spark plugs, or damaging the cat, as long as the oil consumption is within Toyota’s spec, me, I’d live w/it. It is a 4 cylinder. I had a VW Rabbit that had bad valve stem seals.
What makes blue smoke from car when starting and when accelerating?
What makes blue smoke from car when starting and when accelerating? 1. Lots of Blue Smoke When Starting Cars (not Diesel): Bad Valve Seals. If you see blue smoke coming out of exhaust after you have parked your car for a while and the engine is not a diesel, the probable culprit is Bad Valve Seals. Each engine has valves that open and close.
Why does my Toyota Camry have blue smoke?
In have a 2005 Toyota Camry with 120,000 miles. Upon starting the engine there is a puff of blue smoke with smell of oil burning. There does not appear to be any smoke during the running of the car. Any clues on what the root cause could be?