What happened when the car started with the smell of gasoline

It is very normal for a car to smell of gasoline when it starts cold, and this phenomenon occurs in most models. If there is a smell of gasoline in the car when the hot car is idling, it means that the car has broken down and needs to be repaired in time.

When the car starts cold, it smells like gasoline. This is due to an imbalance between the amount of air intake and the proportion of the mixed oil and gas injected. At the moment of starting the car, the throttle valve is closed, and the air intake relies on the bypass valve, because the ECU will judge the amount of fuel injected by the temperature sensor and oxygen sensor during the cold start of the car.

In order to achieve the best working condition of the engine, the fuel injection of the engine will increase, and the air intake of the bypass valve will also increase.

If the engine idles or runs at low speed for a long time, it will lead to insufficient fuel combustion of the car, and after a long time, carbon deposits will block the bypass valve, which will affect the intake of the engine to a certain extent, and the ratio of fuel and air will be unbalanced, resulting in some fuel can not be fully combusted, so the car will smell obvious gasoline smell.

If the smell of gasoline appears in the hot car, it means that the engine has carbon deposits and needs to be repaired as soon as possible.

Normal, the temperature is low in winter, the oil fluidity is poor, when the temperature of the engine does not reach the best working temperature when the cold car starts, the fuel injector will automatically increase the amount of fuel injection, and the fuel injected can not be fully burned, and the exhaust gas is discharged together, so it smells.

It's normal for a car to smell of gasoline just after it starts.

When the car is first started, the combustion condition is very unstable, so some of the gasoline will be discharged with the exhaust gas without complete combustion, and the gasoline will smell. When the cold car starts, the ECU will adjust the fuel injection volume according to the intake air temperature, and the fuel injection volume will be relatively large when the cold car is started, and the mixed combustion of oil and gas in the cylinder is not sufficient when the engine is just started.

The oil and gas that are not fully mixed are discharged directly from the exhaust pipe, and the amount of gasoline is relatively large, so it smells of gasoline. This phenomenon only occurs occasionally when the car is started cold, and after the hot car is started or the engine reaches the normal operating temperature, the mixed oil and gas are fully combusted, and the gasoline will no longer smell.

insufficient throttle intake; There is a problem with the canister or the solenoid valve of the canister; Too much carbon deposition inside the engine causes poor atomization of the mixture; There is leakage in the fuel injector; The outside temperature is low, the mixer can not be fully burned, and it is directly discharged by the exhaust pipe;

Generally these are the kinds of questions.

The question I asked was a new car, so it shouldn't have been a problem car just a month, right?

New cars are generally smelly.

It'll be fine after a while.

Question: But my neighbor also has a new car, the engine is the same, and his car doesn't smell of gasoline!

Does gasoline smell strong in general?

Question: Yes, there is a distinct smell of gasoline.

When idling, is there a regular high and low?

Question: No. And the car is not powerful.

The question car is powerful.

Is it that the smell of gasoline is particularly strong when you step on the accelerator?

If you ask if it's not, you can smell it when you're idling.

I'm wondering if there's a problem with the plumbing of the canister system.

Because it's a new car.

Ordinary carbon deposits are not supposed to exist.

Spark plugs, these should not.

When the cold car starts, the ECU will appropriately increase the air intake and fuel injection volume according to the water temperature signal, at this time, the engine has not reached the normal working temperature, the oil and gas can not be fully combusted, and a very small part of the oil and gas that has not been fully burned will be discharged, and then it will smell gasoline; When the engine reaches the normal working temperature of 85-95, the oil and gas in the cylinder are fully burned, and the gasoline smells.

If it is normal to have a gasoline smell when starting, because when the car starts cold, the ECU will appropriately adjust the fuel injection volume according to the inlet air temperature and water temperature signal, at this time, the engine has not reached the normal working temperature, the oil and gas can not be fully burned, and a very small part of the oil and gas that has not been fully burned is discharged, which will smell gasoline. When the engine reaches a normal working temperature of 80-90 degrees.

The reasons for the rough smell of gasoline in Che Qizhou are as follows: 1. It is caused by the complete combustion of gasoline. When the car is cooled, the driving computer will appropriately adjust the amount of fuel injected according to the inlet air temperature and water temperature signal, but the engine has not yet reached the normal working temperature, and the combustion effect is not good, so that a fuel is discharged without full combustion.

2. The throttle intake of the car is insufficient. Causing the air flow information to be incorrect, affecting the amount of fuel injection, resulting in an increase in fuel consumption, and a strong gasoline smell. 3. Excessive carbon deposition in the cylinder combustion chamber and piston causes insufficient cylinder pressure and excessive concentration of mixed gas, resulting in increased fuel consumption.

4. Too much carbon deposition inside the engine causes poor atomization of the mixture. 5. The gasoline pipe leaks, forming sludge at the interface of the oil pipe, and the smell enters the car with the buried sensitive air conditioning system.

Insufficient gasoline combustion, oil leakage in the fuel tank, and problems with gasoline carbon canisters are all reasons for the smell of gasoline when the vehicle is started. 1.Gasoline burns inadequately.

Because the ECU will adjust the fuel injection volume according to the intake air temperature when the car is cold, the fuel injection volume will be relatively large when the car is cold, but when the engine is just started, the oil-gas mixture in the cylinder is not completely burned, and the oil and gas that are not fully mixed are directly discharged from the exhaust pipe. The amount of gasoline in these gas mixtures is relatively large, so there will be a gasoline smell. 2.

A leak in the tank or an oil leak can make us smell gasoline, but it's very unlikely. Cars that don't have a big crash generally don't have this problem. The inspection method is also very simple.

Just look where you park and see if there's any dripping oil on the ground. Regardless of whether the fuel tank is leaking or not, there will be traces on the ground. 3.

The problem with gasoline canisters. The main material of the canister is our activated carbon. It is known to have a very strong adsorption capacity.

And the role of the carbon canister in the car is to absorb the oil vapor in the engine oil, because gasoline will be seriously vaporized at high temperatures, which will put a lot of pressure on our fuel tank. It is either expelled or collected. When the canister is damaged, the oil and gas in the canister will leak out.

So, in this case, it's always in the car.