Will refueling after the nozzle automatically stops have any impact on the car?
3 Answers
Refueling after the nozzle automatically stops will not have a significant impact on the car. After the nozzle stops, wait a few seconds to allow the fuel vapor in the tank to slowly escape, slightly reducing the pressure. At this point, you can add a little more fuel to the tank. The reasons for the nozzle stopping during refueling and precautions are as follows: Reasons for the nozzle stopping during refueling: Vapor generation during refueling: When refueling, if the fuel flows too quickly from the nozzle, it can generate expanding vapor that doesn't have time to escape. If the carbon canister solenoid valve is closed at this time, the carbon canister will accumulate more and more gas, leading to fuel splashing, even though the car's fuel tank is not yet full. Precautions during refueling: Insert the nozzle as deeply as possible into the tank opening to prevent fuel from splashing out when the nozzle stops.
After driving for twenty years, I used to think I could always squeeze in a bit more gas after the pump clicked off, but that one time nearly ended in disaster. Right after filling up and hitting the highway, I suddenly smelled a strong gasoline odor. I immediately pulled over and found fuel leaking all around the fuel tank cap—scared me half to death. Later, the mechanic explained that forcing extra fuel after the click eliminates expansion space. In hot weather, gasoline expands and can overflow, which is not just wasteful but extremely dangerous. Even worse, it can cause fuel to backflow into the charcoal canister, and replacing that costs a fortune. Now, I always stop at the click—safety is way more important than saving a few extra bucks.
I've seen too many cases in repair shops where car owners suffer big losses for small gains. Last month, a new SUV was towed in simply because the owner insisted on filling the tank to the brim every time. Upon disassembly, we found the carbon canister was full of liquid gasoline, the activated charcoal completely ineffective, and the engine throwing error codes. Just the parts replacement cost over a thousand yuan. Actually, fuel tanks are designed with vapor recovery tubes at the top - overfilling directly floods this system. Plus, in summer when the tank expands from heat, excess fuel can spill out through vent holes, corroding the paint. My advice? The pump's automatic shutoff is the car's self-protection mechanism - don't fight it.
