The Problem: A frequent and critical problem in older vehicles is burning oil that causes exhaust smoke and increased emissions. Excessive smoke indicates that oil is getting past the valves and piston rings and into the combustion chamber, which can eventually harm the engine. If an engine is burning oil, it is most often noticeable when starting the car while the engine is cold or when quickly accelerating from a stop. If the car is burning oil you’ll notice some blue smoke from the exhaust pipe either when starting the motor, or accelerating from a stop. A car may be burning oil for a few different reasons.
3. The Oil Filler Cap. White smoke coming from hood of car not overheating is a common issue in older engines. The oil filler cap in almost all the engines releases a faint whiff of smoke, which is a residue of the burnt fuel inside the engine. Older engines produce more hot spots, which make the car smoking under hood but not overheating.
Car burning oil no smoke. Why is There Oil Burning Outside the Engine? Aside from the characteristic smell of burning oil, another thing that can characterize oil burning internally is the presence of blue smoke upon starting your vehicle (as a sign of valve seal or guide problem) or during acceleration or deceleration (piston ring or PCV valve issue). Step 1 – Checking for Excess Oil Consumption with No Exhaust Smoke. If your car is using extra oil but shows no signs of smoke coming from the exhaust system, you could have a problem with your PCV system. The solution to this problem requires replacing the valve. This situation can also occur if the engine is experiencing mechanical problems. The thing is that oil burns. Your car is actually just burning the oil as it is supposed to do, however it might just not be quite so visible to you just yet. If what this example told us is true, and they lost 2 1/2 quarts between oil changes, that is a big red flag for a car under 60,000 miles on the odometer.
However, even if you don’t see any smoke, your engine could still be burning oil. That’s because the car has a catalytic converter that is designed to clean the exhaust and prevent pollutants like smoke from reaching the outside air. Because of this, many (perhaps even most) cars that burn oil won’t produce any noticeable smoke. All symptoms that can cause the engine to start burning oil and smoke. Conclusion. On some cars, especially those that use synthetic engine oil, the tailpipe smoke might not be as evident. A burning oil smell is still quite obvious. Oil consumption is a normal part of engine operation. Normal oil consumption can average up to a quart per 2,000. My car produse smoke black. Call Edgar Hendricks on June 22, 2017:. However in the 16+ years I've been an auto tech there has never been a vehicle diagnosed as burning oil when black smoke is coming from the tail pipe. It has always been blue. Blue Smoke = Oil getting past the piston rings, valve guides, crankcase vent system or head gasket.
The oil level is low between oil changes. You see puddles of oil under the car. Obviously, you have an oil leak. You may or may not see smoke or smell oil burning when you stop at a light, stop sign. or park the car. You should make sure the engine always has the proper oil level. Possible Causes . The oil would slowly leak out of the engine and congeal on metal components like valve covers and exhaust manifolds. You'd see no visible leak and no smoke that would otherwise tip you off to a problem. Sound like your car? We recommend a visit to our service center. Using special tools, we can locate your car's oil leak and suggest a fix. When a seal or guide is bad, oil that’s left on the valve stem will drain down and sit on the valve head, or it will drip into the cylinder. Then when you crank up your car, that oil will burn, causing a puff of smoke that then subsides. If seals are the problem, they will need to be replaced.
On some cars, especially those that use synthetic engine oil, the tailpipe smoke might not be so evident. A burning oil smell is still quite obvious, though. It’s off-putting and heavy, and could turn your stomach. Even without blue smoke or a burning oil smell, you could have a car burning oil but not leaking. If there's oil leaking along the valve covers where they meet the engine head, that's probably why the car is burning oil. Check the tightness of the valve cover bolts. If the bolts are loose, that could cause a car to burn oil. Use a torque wrench to tighten them. Drain the engine oil in the car that's burning oil. Install a new oil filter. no, that is usually an engine oil problem. White smoke is usually the result of burning engine coolant. Blue smoke is from burning engine oil and black smoke is excess fuel (flooding).
Burning Oil Smell in Car. This is probably a common burning smell in car type that you have heard before. When the oil in the exhaust leaks out, it will make the car smell of oil or we usually call – burning oil smell. Burning oil smell in car. The smell of oil in the car is a thing nobody wants when driving. TOM: You're burning the oil, Mike. If it's not leaking, you're burning it. Burning oil won't necessarily cause you to fail an emissions test. Most emissions testers measure carbon monoxide, carbon dioxide and unburned gasoline. There's no "engine turning to crap" oil-burning detector in the emissions tests yet. RAY: And that's a lucky thing for. "Loosing that much oil, with no leaks, no noise, and no noticeable performance loss sounds like rings. With rings sometimes there isn't much smoke. The oil will burn in the combustion chamber. It can burn out almost completely, making little smoke. When you get blue smoke, it is from the stem seals, especially the exhaust.
OK, I have fifty years of experience as a gear head working on cars and building high performance engines. In the past, it was possible to quickly diagnose engine problems by looking at the color of the exhaust. Black tailpipe emissions indicated. Bardahl 2116 No Smoke is very thick oil additive (formula is polymer-based), designed for improving the crankcase on old vehicles by reducing the oil burn, engine smoke, and emission. Bardhal claims that, as you use the engine, its piston rings and cylinder walls wear out. As indicated above, burning oil smell can also come out of the exhaust. If the piston rings are damaged, the burning oil is caused by a lack of compression in the combustion chamber and excessive oil entering the combustion chamber. This is also what causes burning oil when cylinder head valve guides are damaged.
Add STP Smoke Treatment to the car during every oil change. This product will thicken the oil in the car to reduce oil leaking and burning. Follow the manufacturer's instructions for best results. Basically, you just add a bottle of the STP Smoke Treatment to clean oil in a warm engine. A car engine can smoke for several reasons. If the smoke is blue, it means it's burning oil. This could be caused by valve stem seals, worn rings, a plugged PCV valve, not changing the oil for extended periods, too high of an oil level or transmission fluid being sucked into the intake manifold from a bad vacuum modulator. This burning oil situation is more serious. It usually results from an oil leak somewhere on the exterior of your engine. This oil then finds its way to hot engine surfaces, like the exhaust system, where the intense heat can cause the oil to smoke and possibly ignite.
It is losing/burning oil somewhere. ZERO leaks and ZERO smoke! I do notice a little burning smell when I back up into the exhaust. It has 115,000 miles on it and is in excellent condition. Today changed oil after 500 miles of 10-30 Napa oil and changed to Mobile One synthetic 10-30. I sure hope this helps…$40.00 for an oil change.