Fuel leaking when full tank of gas
11-28-17, 08:51 AM
#1
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Fuel leaking when full tank of gas
Every time I fill it up 3/4 to full, you smell the fuel. Now it's the first time I've noticed a small yellow puddle of fuel underneath my car. It's located right underneath the fuel cap. When the tank is less than 3/4 full, the smell is gone and of course the leaking stopped.
What can it be? I don't think the fuel tank is leaking, cause otherwise it would be leaking all the time.
What can it be? I don't think the fuel tank is leaking, cause otherwise it would be leaking all the time.
11-28-17, 09:08 AM
#2
Lexus Champion
do you regularly "top off" the tank? sounds to me like the charcoal vapor canister is full of fuel from topping off, I've seen that happen on many makes and models. This would result in the fuel leaking back out.
if that is the case, you will likely need a new vapor canister, as it can cause vapor lock during fuel flow and stall out the car, it will also prevent you from fully filling the tank using the auto lock on the pump nozzle.
if that is the case, you will likely need a new vapor canister, as it can cause vapor lock during fuel flow and stall out the car, it will also prevent you from fully filling the tank using the auto lock on the pump nozzle.
11-28-17, 09:22 AM
#3
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do you regularly "top off" the tank? sounds to me like the charcoal vapor canister is full of fuel from topping off, I've seen that happen on many makes and models. This would result in the fuel leaking back out.
if that is the case, you will likely need a new vapor canister, as it can cause vapor lock during fuel flow and stall out the car, it will also prevent you from fully filling the tank using the auto lock on the pump nozzle.
if that is the case, you will likely need a new vapor canister, as it can cause vapor lock during fuel flow and stall out the car, it will also prevent you from fully filling the tank using the auto lock on the pump nozzle.
The pump nozzle shuts off when full, so that rules out the vapor canister right?
11-28-17, 09:32 AM
#4
Lexus Champion
it's possible the filler neck has a leak or a damaged gasket, have you checked it to see?
11-28-17, 10:03 AM
#5
Driver School Candidate
do you regularly "top off" the tank? sounds to me like the charcoal vapor canister is full of fuel from topping off, I've seen that happen on many makes and models. This would result in the fuel leaking back out.
if that is the case, you will likely need a new vapor canister, as it can cause vapor lock during fuel flow and stall out the car, it will also prevent you from fully filling the tank using the auto lock on the pump nozzle.
if that is the case, you will likely need a new vapor canister, as it can cause vapor lock during fuel flow and stall out the car, it will also prevent you from fully filling the tank using the auto lock on the pump nozzle.
11-28-17, 10:53 AM
#6
Lexus Champion
I've only just recently found out too you should never try to squeeze in (for me to stop at nearest whole dollar) more gas into the tank than necessary. The advice was to stop pumping when it auto-shuts off as trying to top it off too much could damage the vapor canister which is not a cheap fix on many cars.
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11-29-17, 11:24 AM
#10
Lexus Champion
There was a recall for something similar to fuel leak. https://repairpal.com/recall/14V647000
and there you have it.
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