27may2026 jb Petronas bukit chagar phv #SLM3110K toyota sienta pump rock hog pump for a good 5 mins

27may2026 2005hrs jb Petronas bukit chagar phv #SLM3110K toyota sienta pump rock and hog the pump for a good 5 mins quoted inconsiderate driver hogging and rocking quoted Those who shake their vehicle while pumping petrol. If you overfill your tank, it could cover the vapor intake hole with liquid gasoline, which can then be sucked into the charcoal canister. This can damage the canister and possibly other parts of the system, which will cause the car's check-engine light to come on and could potentially be costly to repair. Why your tank requires breathing room Gasoline expands and contracts in response to changes in temperature. Topping off your tank eliminates the air space required for this natural expansion. Your fuel system is constructed on the basis of understanding this, there always has to be a little space at the top of your tank for the vapors of the fuel to condense freely. When you disregard that initial click and just continue pumping, you are pushing gas into a chamber designed only to handle vapors. The excess gas has nowhere to go but back through the pump or forward into your vehicle’s vapor collection system. It throws off the highly developed design of both the station’s vapor recovery system and your vehicle’s emission control equipment, and causes issues that go far beyond a few extra pennies’ worth of fuel. The Vapor Canister Disaster Your vehicle’s vapor canister is intended to trap fuel vapors, not liquid gas. Pumping after that initial click forces liquid fuel into this gas-only canister. It’s like attempting to breathe underwater, the component just can’t work when it’s being submerged in liquid. We’ve seen thousands of vehicles in the shop with ruptured vapor canisters, and always the culprit is the same: pump topping off.