Hi,The problem is either in the valve guides or the piston rings…not sure what engine you have so it’s hard to get more specific then that..heatman101
How to Identify and Resolve Common Issues ?
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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.
Oil collecting on the stems of intake valves is sucked into the combustion chamber during normal operation. Hot exhaust gases burn oil on stems of the exhaust valves. If there`s too much clearance between the valve stems and guides, the engine will suck more oil down the guides and into the cylinders.
Blue smoke is the significance of an oil leak occurring inside the engine. White smoke: White smoke tends to indicate water or too much air is present at the compression stage. Minute drops of water in the fuel can cause white smoke.
If your engine is low on oil but there isn`t a leak, that means it`s probably being burned inside the engine. A bad PCV valve is a frequent culprit in the case of burning oil–but what is it, exactly? A PCV valve is designed to let air escape when the pressure in the crankcase is too high.
When an oil starts to smoke it will impart a burnt, bitter flavor thanks to a substance released called acrolein. During this process, harmful compounds called polar compounds may also be released as a byproduct of the breakdown of that oil as it`s exposed to heat.
Oil consumption is sometimes caused by mechanical problems. Seals and gasket, the bearings, cylinders, ring grooves, connecting rods can be worn or damaged. Cylinders that were not honed properly when the engine was built (or rebuilt), incorrect installation of the piston ring, or other improperly installed parts.
Every oil you cook with has a certain temperature called a smoke point. Once an oil is heated enough, it will begin to smoke and break down. As the oil is breaking down, it starts to become more oxidized.
Blue or Grey Smoke
If the smoke from the exhaust pipe is either grey or bluish-tinged, it generally means that your engine is burning oil inside the combustion chamber. Burning oil could be due to a number of causes, from leaky valve seals to bad piston rings.
Diesel engines are notoriously smoky, producing much more blue, white, and black smoke than their gasoline-powered counterparts. The fundamental reasons for this are that diesels operate at higher pressures, with lower-purity fuel, and variable fuel-air ratios.
Burning oil is a common problem, but when it is ignored, it can do major damage to your car`s engine. Common culprits that result in burning oil include worn valve stems, guides and seals, and piston rings, all of which can allow oil to seep into combustion chambers.
Without a reliable spark from your spark plugs, your engine has to account for the underperformance. It does so by increasing fuel in your cylinders to maintain the pressure in your combustion chamber. As a result, your fuel economy worsens, and oil consumption increases.
The minimum repair will be changing piston seal rings, also known as oil control rings, but it could even require a complete engine replacement. You can expect it to cost anywhere from $1,000 to $5,700 for a gas engine. A diesel engine is much higher still.
In essence, your average car burns about a quart of oil, give or take, every 3000 miles. However, if you find that your car burns about a quart of oil every 1000 miles or less, that is when you have to be concerned.
Once any oil begins to smoke, it starts to break down, altering its flavor and releasing free radicals. A substance called acrolein makes the oil taste burnt and bitter, which can quickly ruin a dish.
When the oil leaks into the combustion chamber, it mixes with the fuel and air being ignited and gets blown out of the tailpipe along with them. The result is white or bluish-white smoke. This is a problem because oil does not belong in the combustion chamber.
Superior temperature resistance. Synthetics can safely handle higher operating temperatures without oxidizing (burning) or breaking down. The upper limit for most mineral-based oils is about 250 to 300 degrees F. Synthetics can take up to 450 degrees F. or higher (some as much as 700 degrees F).
Gasoline is the most consumed petroleum product in the United States.
The Signs. When drivers notice excessive oil consumption, white or gray exhaust smoke, poor acceleration, and/or overall loss of power or poor engine performance, they may be seeing signs of worn piston rings.
But once the oil becomes dirty, it`s time to change the oil and oil filter. Why? Because dirty oil can harm your car by damaging engine parts, decreasing fuel efficiency, or even triggering an engine breakdown. Long delays between oil changes and normal engine wear and tear can also lead to dirty oil.
The oil is probably leaking down onto the hot exhaust system and burning off — leaving an odor but no drops. As long as the oil level doesn`t drop below a safe level, this leak isn`t harmful. But if you`re going to keep the car, I`d recommend having the gasket replaced.
If there`s a noticeable thick burning oil smell coming from your car, it may mean that your oil is leaking. Oil can drip out onto the hot engine parts, creating this acrid smell. If your oil is leaking, it could also mean that your vehicle is overheating.
Motor Honey is an oil treatment that you add to your car`s regular motor oil. It`s designed to reduce oil burning (and the smoke that it sometimes causes) without having to make any changes to the engine itself. All you have to do is include one bottle with each oil change.
To fix blue or gray smoke: The easy way is to add a bottle of Motor Honey Oil Treatment to your motor oil with each oil change. It`s specially designed to reduce oil burning and stop smoky exhausts. The hard way is an engine overhaul, which is about a hundred times more expensive and a thousand times more work.
Billowing black smoke is generally a sign that the fuel-air ratio in your engine is too rich. This means that the fuel injectors are either adding too much fuel or that the intake valves aren`t letting enough air in.