Skip the auto shop - Our mechanics make house calls

Q: I over-topped off my gas at fillups from 0 miles to about 170k miles, before realizing that it was stupid. Damage assessment?

asked by on

With every fill-up for 170,000 miles I kept pumping gas past the cutoff until it would just begin to spill out. Then I found out that I probably destroyed my vaccuum canister as well as other items, based on stuff I read on the internet. So I no longer do that. My car seems to run fine but I'm wondering if I am going to have to pay the piper. Perhaps fumes are getting into my cabin (I sometimes think I smell it, but not sure). Plus, maybe it might fail smog down the road due to possible damage to the emissions system? If there is damage, what do you think it will cost to fix it? Could it have damaged my cat? I have had the check engine light go on and off but I just found another potential reason for that and have just fixed it, so we'll see if the light comes back on.

My car has 200000 miles.
My car has an automatic transmission.

Not much damage will result in this event. The only thing that will happen is the fuel may leak out the run off tube and cause an external leak as the little run off hose is rarely used. In that case, you would only have to replace the rubber run off hose. If you need further assistance with your fuel system, then seek out a professional, such as one from Your Mechanic, to help you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  • Home
  • Questions
  • I over-topped off my gas at fillups from 0 miles to about 170k miles, before realizing that it was stupid. Damage assessment?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: i'm not getting the fuel mileage I got when I first purchased the car

If your fuel mileage has dropped, first check for any leaks under the vehicle. If there are no visible leaks, then check the spark plugs and see what color they are. If they are burned and white, then the spark...

Q: No start and has codes P1626 and P0463. 2000 Chevrolet Express 1500

Hi there. Check the fuel pump and see if its working. The code P0463 means that the fuel level sensor is not picking up what is in the vehicle. Make sure that there is fuel in the fuel tank and...

Q: How do I open and close the fuel tank?

The fuel tank is accessed through the fuel door on the left side of your vehicle. To add more fuel, you have to unscrew the fuel cap. The fuel cap unscrews counter-clockwise, just like the lid of a jar. To...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.