When you pour gas into the air intake, it bypasses the fuel injection system and goes directly into the engine. This can cause the engine to run too rich, which can lead to a number of problems, including:
1. Stalling: The engine may stall because it is getting too much gas and not enough air.
2. Knocking or pinging: The engine may knock or ping because the fuel is not burning properly.
3. Backfiring: The engine may backfire because the unburned gas is igniting in the exhaust system.
4. Engine damage: The engine can be damaged if it runs too rich for too long. The piston rings can be damaged, the cylinder walls can be scored, and the catalytic converter can be clogged.
In short, pouring gas into the air intake of your car is a dangerous practice that can cause serious damage to your engine.