I had a brand new Toyota Sienna that would not start after everytime I gassed up. The Toyota dealer couldn’t figure it out, but eventually, they realized it was the purge valve. They said this can happen from over filling the fuel tank. That reminded me that one of my first times I filled up the new car the gas nozzle didn’t click when it was full and gas was just pouring out of the car onto the street. That must have been what killed the purge valve.
M - Yes, overfilling the fuel tank can damage the purge valve in the EVAP (Evaporative Emission Control) system, as excess fuel can flood the system and contaminate components designed to handle only vapors. The incident where gas overflowed likely caused liquid fuel to enter the charcoal canister and purge valve, leading to their premature failure. This is a common issue that can result in starting problems after refueling, as a stuck or malfunctioning purge valve may cause excessive fuel vapor flow into the intake, disrupting the air-fuel mixture. To avoid this in the future, stop fueling once the pump clicks off and avoid "topping off" the tank.
Combustion engines are highly complex and have been improved a huge amount over the decades I've been operating them - this applies especially to reciprocating engines used in land vehicles. I have operated both recips and turboprops in aircraft too. I wonder how much more development is possible? But now we have electrical energy storage (mostly in batteries) available, we should pursue electrical engines for their relative simplicity and reliability and not least for their lack of air pollution in their vicinity (so we don't have to breathe particulates). And quieter operation.
Great video with very useful information! Well presented covering the important points. Thank you. Subscribed 😊
R - Thanks for taking the time to share this feedback! Glad we could help.
I had a brand new Toyota Sienna that would not start after everytime I gassed up. The Toyota dealer couldn’t figure it out, but eventually, they realized it was the purge valve. They said this can happen from over filling the fuel tank. That reminded me that one of my first times I filled up the new car the gas nozzle didn’t click when it was full and gas was just pouring out of the car onto the street. That must have been what killed the purge valve.
M - Yes, overfilling the fuel tank can damage the purge valve in the EVAP (Evaporative Emission Control) system, as excess fuel can flood the system and contaminate components designed to handle only vapors. The incident where gas overflowed likely caused liquid fuel to enter the charcoal canister and purge valve, leading to their premature failure. This is a common issue that can result in starting problems after refueling, as a stuck or malfunctioning purge valve may cause excessive fuel vapor flow into the intake, disrupting the air-fuel mixture. To avoid this in the future, stop fueling once the pump clicks off and avoid "topping off" the tank.
Combustion engines are highly complex and have been improved a huge amount over the decades I've been operating them - this applies especially to reciprocating engines used in land vehicles. I have operated both recips and turboprops in aircraft too. I wonder how much more development is possible? But now we have electrical energy storage (mostly in batteries) available, we should pursue electrical engines for their relative simplicity and reliability and not least for their lack of air pollution in their vicinity (so we don't have to breathe particulates). And quieter operation.
F - This is interesting.