Gas pump difficulty
Thread Starter
Le Mans Master
Joined: Feb 2012
Posts: 5,348
Likes: 2,858
From: Western Massachusetts
2024 C2 of the Year Finalist - Unmodified
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Gas pump difficulty
Excuse me if this has been discussed as I'm from the C2 forum. I'm having trouble fueling my 19 GS Coupe at my favorite Sunoco station, pump keeps kicking off. Any tricks?
Dan
Dan
Popular Reply
Nov 4, 2025, 03:36 PM
Instructor
Joined: Jul 2025
Posts: 202
Likes: 266
I know I know, but I used to do this in my old mustang to get it to fill up without stopping many times....
.... and doing the same now in the vette as I left Costco once with it jumping half way off..... it works
and yes, it depends on the pumps. Some will work perfectly some don't, but when you don't know, this procedure works all the time
Le Mans Master
Joined: Jun 2004
Posts: 7,157
Likes: 154
From: The Arid Sunny Desert
Air in the system is a possibility with the C7. I push the nozzle in up to the spring on the nozzle, which is about 1/2 to 5/8 into the receiver and that is usually the comfort zone for my car. Hope this helps.
Racer
Joined: Feb 2021
Posts: 268
Likes: 172
From: Tampa FL
I am in Florida. I have been always using Sam's fuel station. I had same issue with my Z51 for years. I tried tilt, invert but it was not a complete solution to it. Recently they replaced entire pumping station and that issue was gone. I assume pumping issue might be on pump side?
Thread Starter
Le Mans Master
Joined: Feb 2012
Posts: 5,348
Likes: 2,858
From: Western Massachusetts
2024 C2 of the Year Finalist - Unmodified
2023 C2 of the Year Finalist - Unmodified
2019 C2 of Year Finalist (stock)
2015 C2 of the Year Finalist
I am in Florida. I have been always using Sam's fuel station. I had same issue with my Z51 for years. I tried tilt, invert but it was not a complete solution to it. Recently they replaced entire pumping station and that issue was gone. I assume pumping issue might be on pump side?
Tx
Dan
Instructor
Joined: Jul 2025
Posts: 202
Likes: 266
I know I know, but I used to do this in my old mustang to get it to fill up without stopping many times....
.... and doing the same now in the vette as I left Costco once with it jumping half way off..... it works
and yes, it depends on the pumps. Some will work perfectly some don't, but when you don't know, this procedure works all the time
Race Director
Joined: Mar 2001
Posts: 19,911
Likes: 6,705
From: Bonneville Salt Flats
It happens with some stations and some nozzles. Turn the nozzle and see if it helps. Try other stations. Btw, I have one station that had the issue; they changed nozzles and no more problem. 
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Melting Slicks
Joined: Oct 2022
Posts: 2,736
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From: Phoenix, Arizona
2025 C7 of the Year Finalist- Unmodified
2024 C7 of the Year Finalist - Unmodified
try another pump!!
i've got a couple pumps at my close-by costco, which i avoid, that trip off multiple times, no matter position of gas nozzle!!
i've got a couple pumps at my close-by costco, which i avoid, that trip off multiple times, no matter position of gas nozzle!!
Drifting
Joined: Jul 2016
Posts: 1,866
Likes: 1,152
From: Keswick, Virginia
This is a common problem with C7 coupes. It happened with both of ours when we had them. The solution is to insert the nozzle partway into the filler neck (just the tip - LOL!) and use "half speed" to fill the tank.
Listen very carefully to the sound of the gasoline going into the tank and you'll know when it is almost full because the pitch will change. In most cases, the pump WILL shut off at that time. That way, you avoid overfilling and/or spillage. If you DO something wrong and end up with a bit of gasoline on your paint, clean it off quickly. It will act like a solvent and eat through your wax.
More often than not, the "pump shutting off" situation is caused by the equipment at the gas station - but the fuel filler neck design of the C7 doesn't help very much.
Melting Slicks
Joined: Dec 2017
Posts: 3,408
Likes: 1,946
From: Columbus Ohio
I've never had a problem with this.
Of course, all of my fuel is V-Power NiTRO+ from Shell.
From what I see above, it appears (as others have said), to be a problem with specific pumps/nozzles - not your car.
Of course, all of my fuel is V-Power NiTRO+ from Shell.
From what I see above, it appears (as others have said), to be a problem with specific pumps/nozzles - not your car.
Melting Slicks
Joined: Oct 2022
Posts: 2,736
Likes: 2,232
From: Phoenix, Arizona
2025 C7 of the Year Finalist- Unmodified
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Drifting
Joined: Oct 2013
Posts: 1,577
Likes: 121
Try a pump that puts you on a slight downside from the pump, My 19 chevy van will not take gas if the van is completely level. On a slight down hill side it will no problem. It annoyed me to no end until i started doing that
Pro
Joined: May 2017
Posts: 504
Likes: 143
From: Indianapolis Indiana
As others have said, rotate the handle so that it is 180 degrees from the normal position i.e. upside down. Learned about it here on the C7 forum years ago. It works and it worked for my RV also. Some guy on here explained why it works. Maybe related to a pitot tube issue.
