My car was smoking on the driver side no leaks on the ground and it’s not over heating

I have a Lexus GS300 06 it started smoking on the driver side no leaks on ground and it's not over heating

My car has 120120 miles.
My car's transmission is unknown to me.

Experienced mechanics share their insights in answering this question :
Hello. The best thing to do is visually inspect where the smoke is coming from. Replicate whatever conditions necessary to get the engine to smoke again, and lift the hood to see where it is coming from. Keep in mind, the smoke source is likely the source of heat and not the source of the leak. Also try to identify if it is white smoke (coolant), blue smoke (oil), or grey smoke (fuel). Another option for inspection is to check what fluids in the engine are low. Check the coolant, gas mileage (or fuel usage), brake fluid, power steering fluid, and engine oil. These are the most common and likely to leak near the engine. If you find the source of the smoke, you can locate the source of the leak, and make an appropriate repair.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

The most common answer to, “Why is my car smoking but not overheating?” is that there`s a type of fluid that`s landed on the engine. This can be motor oil, fuel, transmission fluid, coolant, or even condensation. It can cause your engine to smoke because it`s burning off that fluid from the engine.
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.
Leaking Coolant – If you see white smoke under the hood, it`s most likely burning coolant that has come into contact with the hot components beneath your hood. This smoke will smell sweet.
White smoke from your exhaust means coolant is exposed to your engine`s combustion process. In most cases, this is the result of a blown head gasket, but a cracked engine block or cylinder head could also be the cause.
One possible reason for white smoke coming from your car`s exhaust is that the engine is burning oil. This can happen if the oil level in the engine is low or if the oil seal is leaking. If you notice that your car is burning oil, you should take it to a mechanic to have it checked out.
Fog Inside Your Car

First, the heater core could be malfunctioning and, as such, the defrosters aren`t working. Second, the core could be blowing fog/smoke into your vehicle`s cabin. Both are bad signs and need to be checked into right away.

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.
Black exhaust smoke

When your exhaust pipe gives off black smoke, one of the things to get worried about are bad or worn out spark plugs. It means fuel burning in the combustion chamber is not being done 100 percent or burnt fully. It also means that air is not being well mixed with fuel to burn effectively.

ECU Error. Your Engine Control Unit (ECU) is responsible for the correct timing of the fuel injectors. As with having a faulty fuel injector, incomplete combustion due to incorrect timing results in a white smoke coming out your exhaust.
Low coolant can sometimes cause a head gasket on your engine block to blow. If this happens, you may notice smoke emitting from the engine or tailpipe, a loss of power, engine knocking sounds, or decreased efficiency.
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. This could be caused by a leaking fuel injector, a faulty fuel pressure regulator, or a bad air filter.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

My car was smoking on the driver side no leaks on the ground and it’s not over heating
ANSWER : Hello. The best thing to do is visually inspect where the smoke is coming from. Replicate whatever conditions necessary to get the engine to smoke again, and lift the hood to see where it is coming from. Keep in mind, the smoke source is likely the source of heat and not the source of the leak. Also try to identify if it is white smoke (coolant), blue smoke (oil), or grey smoke (fuel). Another option for inspection is to check what fluids in the engine are low. Check the coolant, gas mileage (or fuel usage), brake fluid, power steering fluid, and engine oil. These are the most common and likely to leak near the engine. If you find the source of the smoke, you can locate the source of the leak, and make an appropriate repair.

Oil leaking from engine (not enough to leave driveway spots but still a leak) white/grayish smoke on startup only. No smoke while
ANSWER : External leaks could be from any of the oil seals on your engine and the cost to repair would depend on exactly where the leaks are located and how many seals need to be replaced. Certain seals are inaccessible unless the engine is removed, notably the rear crankshaft seal. Of course, as many leaks as possible should be repaired because leaking oil can damage external engine components such as rubber motor mounts. Oil leaking into the combustion chamber that is visible as smoke in the exhaust on start-up is typically due to failing valve stem oil seals. Those seals are replaceable. If you want the sources of the oil leaks identified and the repair estimated, simply request an oil leak diagnostic. If you have further questions or concerns, do not hesitate to re-contact YourMechanic.

My car been leaking gas my tank is on my passenger side but gas leaking on my driver side
ANSWER : Leaking gasoline is a fire/explosion hazard so be sure to have this leak repaired at your earliest convenience. In the meantime, be sure not to park in a confined space, such as a garage, because gasoline vapors could accumulate and explode if there is an ignition source. Undercar fuel leaks are often caused by corroded, perforated steel tubing, joint leaks at the fuel filter, or rubber hose connections. Sometimes fuel pipes can get damaged by collisions with debris on the roadway. Whether the leak is in the steel supply and return lines, rubber hoses, or even the gas tank, it will be repairable. If you desire a repair of the leak by a certified Mechanic, dispatched by YourMechanic right to your location, please request a fuel leak inspection and diagnostic – tubing and tank and the responding certified mechanic will get this resolved for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

My car is over heating. It doesn’t take long for it to over heat till it is smoking and I have to turn the car off.
ANSWER : There are a couple of possibilities for such a rapid overheating situation. The thermostat may have failed in the "closed" position preventing the hot water from circulating and cooling in the radiator. The water pump or the serpentine drive belt may have failed and the hot water does not get circulated through the radiator.

If one of the head gaskets on the engine has failed, combustion gasses from one or more cylinders can "superheat" engine coolant very quickly. If the coolant level is low and there are air pockets in the engine, the coolant is literally "boiled away" inside the engine, creating far higher temperatures than an engine that is "full of coolant".

It is recommended that you get a mobile, professional mechanic, such as one from YourMechanic, to perform an inspection and determine the cause of the overheating.

Fuel EVAP line that runs under car is kinked how do I know if it is leaking? Also can I drive it like that if it’s not leaking?
ANSWER : Hi Ricardo. We answered your question earlier. However, if you didn’t receive the reply, here is what we stated earlier. In most cases, an EVAP leak will create an OBD-II trouble code. The best way to detect an EVAP leak is by having a professional mobile mechanic complete a check engine light inspection, they will be able to download the code and determine the source of the leak. That’s the best advice we can offer you. Thanks.

Fuel EVAP line that runs under car is kinked how do I know if it is leaking? Also can I drive it like that if it’s not leaking?
ANSWER : Hi there. In most cases, an EVAP leak will create an OBD-II trouble code, which is the best way to detect an EVAP leak. By having a professional mobile mechanic complete a check engine light inspection, they will be able to download the code and determine the source of the leak. In most cases, it’s an EVAP purge solenoid that is faulty.

Coolant leak visible from driver side of engine.
ANSWER : Hi there. The leak that you are seeing could be from a coolant hose that is either loose or split. Also the coolant leak could be coming from a core plug (freeze plug). The best way to track a leak is to put coolant dye into the radiator, drive the vehicle for a couple of miles, and then pressure test the system. Use a black light and yellow glasses to see a neon glow. This will help you locate your leak. If you need further assistance with locating a coolant leak, then seek out a professional, such as one from Your Mechanic, to help you.

After unlocking the car from the drivers side, if the passenger door is opened before the key is put in the car the alarm goes off.
ANSWER : The key should only unlock the driver door with one turn and unlock all of the doors with two turns. If the passenger door is unlocking when the driver door is turned with one turn or if the alarm is still set if the driver door is turned two times, then the Immobilizer System Module needs replaced if you are intending on not using a key fob or you will need to get a key fob to manually turn off the Immobilizer System Module. If you need further assistance with your doors unlocking unusual, then seek out a professional, such as one from Your Mechanic, to help you.