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.
How do you fix a blue smoke from a diesel engine?
Clean The Engine.
A clogged cylinder head can cause blue smoke. To clean it, remove the valve cover, and do the necessary cleaning. Also, clean the drain back holes carefully and recheck and reassemble them. After all of this, wait for 2 or 4 more days for the remaining oils to clean away.
What does blue engine smoke mean?
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.
How much does it cost to fix blue smoke from exhaust?
Replacing these could cost anywhere from
$100-$500
depending on whether you do it yourself or have a reputable shop complete the service for you, so it’s worthwhile to make sure they are bad before you sign up for that chunk of change.
What are the signs of a blown head gasket?
- White smoke coming from the tailpipe.
- BUBBLING IN THE RADIATOR AND COOLANT RESERVOIR.
- unexplained coolant loss with no leaks.
- Milky white coloration in the oil.
- Engine overheating.
Can a bad injector cause blue smoke?
This can be caused by worn/leaking injectors or restrictions in the air intake system. Blue smoke is normally the result of engine oil entering & burning inside the combustion chamber. This is most often caused by
low compression
, or worn piston rings. … (Ford 7.3 & 6.0) injectors.
Why do diesels smoke under acceleration?
Dirty air filter. Black
smoke indicates that the fuel is not burned properly
. The internal combustion process in diesel cars requires a certain mixture of fuel and air. … This faulty process forms solid carbon residue, which causes a black smoke from the exhaust of the diesel engine when accelerating your car.
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
.
What does blue smoke from exhaust look like?
Blue smoke can often look
like grey smoke at first
. But if you notice a distinctive bluish tint, it may signal that the engine is burning lots of oil. This could be due to worn engine components like piston rings, valve seals, or PCV (Positive Crankcase Ventilation) valves.
How do you check for a blown head gasket on a diesel?
- Engine Overheat. If there is a coolant leak, a common symptom is the engine overheating. …
- Poor Performance. A coolant leak from the head gasket can cause the engine to run roughly. …
- Unusual Exhaust. …
- Frothy Oil. …
- Loss of Coolant. …
- Clean Spark Plugs. …
- Heating System. …
- Coolant in Strange Places.
What does a bad head gasket sound like?
If the head gasket fails in such a way it allows the compressed air/fuel to escape, the compression of that cylinder is reduced. This loss of compression results in a rough running engine and a notable reduction in engine power. This sort of failure typically is accompanied by a
sound like an exhaust leak
.
How do I know if my coolant is circulating?
One way to check for proper coolant circulation is to
check the upper and lower radiator hoses
. The upper radiator hose should be hot, around 190–200 °F. (The safest and most accurate way to get this temperature reading is with an infrared thermometer.)
Why is my Cummins blowing blue smoke?
The presence of blue smoke is
an indication of burning oil
. Blue smoke should not be ignored but is common when starting an engine in a cold weather. The oil thins out when it is cold and some could escape into the cylinder and be burnt.
Can faulty injector cause white smoke?
A Faulty Fuel Injector
Without getting too technical, the injectors that deliver the fuel to the combustion chamber
can leak or become stuck in the open position
. This means too much fuel in the engine that needs to burn off and be expelled. This is seen as gray or white smoke from the exhaust.
Is Blue smoke 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 GREY smoke from a diesel mean?
Grey smoke from the exhaust: This could be excess oil, a PCV valve failure or a transmission fluid leak on automatic cars. … In diesel cars it’s more likely to be
soot build-up
or the diesel particulate filter cleaning itself.
