Answer: When petrol smells your carburetor may be flooded and leaking. This may also be caused due to an overfilled tank. Check needle valve for dirt and float for damage or siphon off of petrol, if serous clear vent pipes.

Answer: You try to the start the engine, and it starts fine. However, after a few seconds of running, the engine stops. When you try to start the engine again, it quickly starts and seems to run fine, but then it shuts down again. This type of problem usually happens without warning.
Probable Causes:

1. The electric fuel pump shuts down after start-up.

2. There is a problem in the computerized engine control circuit.

3. If you have a carburetor, the choke may be out of adjustment or is not working properly.

4. The ignition switch is bad.

Answer: You notice black smoke coming from the exhaust when you start your car. The smoke may still be there after the car is warmed, but it may be less noticeable. The smoke may be accompanied by engine idling problems. This problem normally develops over time, and the amount of smoke indicates the seriousness of the problem.
The probable causes are:

1. If you have a carburetor, the carburetor choke may be stuck closed.

2. The fuel injectors may be leaking.

3. The air filter may be clogged.

4. There may be an ignition problem.

Answer: Whenever you run the engine and are not moving, you notice the smell of gas from the exhaust. The smell can be strong enough to make you think you have a gas leak. Not only do you notice the smell, so does everyone around your car. You may also notice that your gas mileage has been worse lately.
The probable causes are:

1. There is a problem with your electronic engine control system.

2. You have an ignition problem.

3. Your fuel injectors are clogged or dirty.

4. There is an engine mechanical problem.

5. You have a vacuum leak.

6. If you have a carburetor, the choke may be stuck closed.