Overfilled Gas Tank Uncovering the Consequences and Solutions

You can cause thousands of dollars worth of damage to the evap components of you overfill. DONT do it. you did not cause any damage to your car.... Back. All times are GMT -5. The time now ... But once it had cleared out it was fine again. My guess is that's exactly what happened to you. - ... If you do overfill, drive like a fool ... ... of the two black plugs at the bottom of the gas tank. I'm guessing those plugs will burst if they sense too much pressure and vent gas correct?. "When we overfill the tank, it sends all of the excessive fuel to the evaporation/charcoal canister and kills the life of that canister," ... Overfilling it over time can damage the evap canister... ... Thank you I won't. Now I'm scared to fill it up though.. thankfully no engine light ... Overfilling the gas tank immediately voids all warranty conditions and agreements. Expect a pending Check Engine light. Lol. Yeah. You're fine. If you're driving an old car, it doesn't really matter if you fill up that tank especially if it's got an old gas cap. ... happen you can ... Overfilling your GM vehicle fuel tank could result in several engine performance issues and fuel system issues, as explained in a recent ... Yes, if you overfill a car's gas tank, the excess fuel will simply spill out, effectively relieving pressure by physically overflowing past the ...