What can cause gas to leak from the tank under the car when topping off tank?

Asked by Jan 03, 2017 at 10:09 PM about the 2001 Pontiac Grand Am GT

Question type: Maintenance & Repair

Gas leaks from under the car from the tank when finishing a fill up. there is no
leaking when driving or when parked uphill or downhill. this only happens
when the auto shutoff from the pump stops the gas flow. it seems like the
amount that leaks out is the amount that is in the fill tube.

3 Answers

74,045

I think there is a leak in the filler neck. Probably a bad rubber hose.

1 of 1 people found this helpful.

I thought that also except it does not leak as it is filling only right at the end of a fill up when the auto shut off stops the fuel flow from the hose.

5,035

First, do not add more gas after the shutoff has activated at the pump. Check the integrity of the rubber line that attaches at the filler neck and the filler tube itself. Look for cracks or splits in the tubing or a hose that is not connected to the filler neck.

Your Answer

Add photo

Related Questions

Grand Am

Looking for a Used Grand Am in your area?

CarGurus has 1,088 nationwide Grand Am listings starting at $1,599.

ZIP:

Search Pontiac Grand Am Questions

Pontiac Grand Am Experts

#1 tenspeed
tenspeed
Reputation 7,760
#2 John Saffrahn
John Saffrahn
Reputation 1,610
#3 Tom Demyan
Tom Demyan
Reputation 1,520
View All

Related Models For Sale

Used Pontiac Grand Prix
39 Great Deals out of 2,767 listings starting at $1,200
Used Pontiac Firebird
11 Great Deals out of 816 listings starting at $1,900
Used Chevrolet Impala
567 Great Deals out of 34,674 listings starting at $1,000
Used Ford Mustang
731 Great Deals out of 42,727 listings starting at $1,300
Used Pontiac Bonneville
522 listings starting at $1,799
Used Chevrolet Malibu
1,217 Great Deals out of 78,026 listings starting at $1,500
Used Honda Civic
817 Great Deals out of 78,129 listings starting at $900
Used Chevrolet Camaro
423 Great Deals out of 31,642 listings starting at $2,395
Used Honda Accord
995 Great Deals out of 62,553 listings starting at $999
Used Chevrolet Monte Carlo
13 Great Deals out of 1,353 listings starting at $995
Used Ford Taurus
262 Great Deals out of 17,944 listings starting at $1,499

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.