Refueling issues

[TexasTonka]

Has anyone else had issues refueling their Viper? More and more when I try to pump gas in my car it burps it right back out. Granted some pumps are just bad so when it happened once in a blue moon I didn't put much into it. Yesterday on a 6 hour cruise it happened three times at three different stations. Every time I shove 1-2 gallons in it and drive to a station down the street. Every time the second station fills up without issue.

I had had this issue on my '96 twin turbo when my fuel pumps would overheat and I had an issue with the tank vent plugged up.

This being a new GenV I wouldn't think a fuel pump or vent would be the issue.

Anyone else had issues fueling up?

[TheMadMachinist]

Your not alone.

Some on here have said something about the vent line being crimped.

This was not the case with my car so 95% of the time I have to stick my finger in between the filer neck and nozzle seal to even get any fuel in at all.

[TexasTonka]

I must have big hands, with the 'Cap less' design on the fuel filler neck I can't get anything in there but the gas pump nozzle.

this condition is happening when trying to fill up no matter what is in the tank. Once I only get 200 miles at best out of a tank when cruising I try and fill up as soon as it gets around half or 1/4 full, never wait till it's empty. Better on the fuel pump that way too.

[TexasTonka]

Where does the vent line run on the GenV? Is it something we can check in the driveway or do o need to take it in?

the Gen2 ran all the way up to the front drivers fender area behind the driver side headlight on my turbo car. Haven't had the time to go through this one like I did with the gen2's.

[swexlin]

Nope, putting fuel in these takes forever. Here in PA, with our recovery nozzles, you literally have to dribble it in.

[Bill Pemberton]

Weird , but try putting the nozzle in sideways ( vertical instead of horizontal ) and seeing if it fills differently . Have trouble with mine sometimes and our tech mentioned for me to try this unorthodox method of fill and darn if it did not work .

[nx91notch]

Some have said there is a plastic vent hose that runs to the purge solenoid that rides along the driver side of the car pretty close to the exhaust manifolds. I have seen a few members state that this line was collapsed from heat.

If you open the hood on the driver side you will see a metal head shield. It rides behind there and runs up right next to the fuse box. Don't know if not being able to get fuel into the car was a symptom of it being collapsed but again I keep hearing that hose has given a few some issues.

[texasram]

I have had the burp happen to me only once, concerning the vent hose i did have a p0456 evap leak code once so mabey my exhaust crimped it, but that was a while ago only occuring once

[ViperSRT]

Weird , but try putting the nozzle in sideways ( vertical instead of horizontal ) and seeing if it fills differently . Have trouble with mine sometimes and our tech mentioned for me to try this unorthodox method of fill and darn if it did not work .
Have to do that with Gen 3 also. Best when upside down (180 degrees)

[Topplayer]

I put the nozzle in upside down, havent had a problem since

[TexasTonka]

Weird , but try putting the nozzle in sideways ( vertical instead of horizontal ) and seeing if it fills differently . Have trouble with mine sometimes and our tech mentioned for me to try this unorthodox method of fill and darn if it did not work .

Tired sideways and upside down. Having the vapor issue in the old GTS Turbo I got used to doing this and taking 30 minutes to fill up until I got the fuel system rebuilt with bigger vents. Unfortunately this trick didn't work on the GenV.


Some have said there is a plastic vent hose that runs to the purge solenoid that rides along the driver side of the car pretty close to the exhaust manifolds. I have seen a few members state that this line was collapsed from heat.

If you open the hood on the driver side you will see a metal head shield. It rides behind there and runs up right next to the fuse box. Don't know if not being able to get fuel into the car was a symptom of it being collapsed but again I keep hearing that hose has given a few some issues.

Great info, I'll tear into it this weekend and see if I may have a tubing issue. I am running ARH headers, not cats and Corsa exhaust but I've ceramic coated everything and also wrapped it all in HeatShield Armor, its about as cool down there as it is going to get. If the tube is plastic or cheaply made I may just make my own out of stainless hose or larger fuel line.


Nope, putting fuel in these takes forever. Here in PA, with our recovery nozzles, you literally have to dribble it in.
It should not take forever, after I splash a gallon or two in the tank and drive down the street I can fill the entire tank on full blast without issue, almost like the cool fuel settled all the vapors or opened up the vents. I've tried putting the one gallon in, resetting the pump, waiting a minute and repumping but it doesn't work, only when I actually drive the car a few miles. It's crazy.

[TrackratViper]

I had the vent line on my 2014 TA collapse. It is a plastic tube that runs by the header right below the fuse box on the driver's side. Mine collapsed on the bottom of the tube so it was not visible. I found it by running my hand on the underside of the tube. I could only put in a gallon or two at a time. I replaced the tube and that cured the problem. You could also just cut out the collapsed section and run a hose where it was collapsed. My advice for any Gen V owner is to wrap the heck out of that vent tube. After I wrapped the new tube I had no more issues and fueling was fine. I wrapped the tube on my ACR and have had no issues.

[ViperGeorge]

I had the vent line on my 2014 TA collapse. It is a plastic tube that runs by the header right below the fuse box on the driver's side. Mine collapsed on the bottom of the tube so it was not visible. I found it by running my hand on the underside of the tube. I could only put in a gallon or two at a time. I replaced the tube and that cured the problem. You could also just cut out the collapsed section and run a hose where it was collapsed. My advice for any Gen V owner is to wrap the heck out of that vent tube. After I wrapped the new tube I had no more issues and fueling was fine. I wrapped the tube on my ACR and have had no issues.

It is easy to use rubber gas line (1/2 inch I think) and replace the plastic line from as close to the firewall as you can. Run it on the outside of the fuse box to get it away from header heat. Cars with headers are prone to the plastic line melting but even stock cars have melted it. If it melts open you won't have an issue putting gas in the car but if it melts closed the tank can't vent fast enough to allow gas in.

[nx91notch]

Great info, I'll tear into it this weekend and see if I may have a tubing issue. I am running ARH headers, not cats and Corsa exhaust but I've ceramic coated everything and also wrapped it all in HeatShield Armor, its about as cool down there as it is going to get. If the tube is plastic or cheaply made I may just make my own out of stainless hose or larger fuel line.

Yup look there....especially now since you have stated you have aftermarket headers. I just installed ARH long tubes and I wrapped the crap out of that tube for this reason. I am sure eventually I will be going through this as well lol. I think what some people have done is removed the plastic tube and replaced it with rubber fuel line. So you may be on the right track.

[One Viper Bite]

This happened to me all the time on my 13 GTS, especially with a specific pump design. The solution?

Stick the nozzle in all the way and using your other hand pull back on the on vapor guard while keeping forward pressure on the pump.

This allowed me to refuel at normal speeds and without the pump stopping prematurely.

Hope this helps!

[Viper Granny]

I have gone to a couple of Shell stations, no problems. Other stations, slow as molasses in January. Now I only use Shell. Don't need the aggravation.

[TexasTonka]

I try to only use Shell. Best additives and 99.9% of the time it's the best fuel. This happens to me at Shell, Exxon, Sunoco, Cheveron....

I have the Calvo heat shielding on the fuse box but ran my hand along the plastic tubing as well as all others I could reach. Do not feel any issues but can't put my eyes on it either. This weekend I'll try and put it on a lift and follow the entire length visually and by feel.
Just a thought but would anyone agree that the headers may be hearing the line up enough to cause vapor block but not enough to melt it?

[sonicbloo]

So its not just UK owners with issues! I presumed it was because of a different pump design over here, or different pump pressure.

It takes me an embarrassing amount of time to get fuel into my gen 3, same issue with my 2003 Mustang and my old 2005 Mustang too. It takes me a good 5 minutes to get 5 or 6 gallons in the tank, due to the pump cutting off every 5 seconds or so.

[TexasTonka]

So its not just UK owners with issues! I presumed it was because of a different pump design over here, or different pump pressure.

It takes me an embarrassing amount of time to get fuel into my gen 3, same issue with my 2003 Mustang and my old 2005 Mustang too. It takes me a good 5 minutes to get 5 or 6 gallons in the tank, due to the pump cutting off every 5 seconds or so.

Not a UK issue, this is almost always cause by vapor lock type situations where the tank does not purge correctly or even a rollover valve is malfunctioning. However since it is happening to you on multiple American cars you may have something else's going on too.

[98RedGTS]

Can't speak for the Gen V but on my Gen 2 I always have this issue. I started just pulling the nozzle out about an inch and filling it up. That has worked for me so far. Glad to see I'm not the only one (seeing other Gen 2 talk in the thread).

[texasram]

I try to only use Shell. Best additives and 99.9% of the time it's the best fuel. This happens to me at Shell, Exxon, Sunoco, Cheveron....

I have the Calvo heat shielding on the fuse box but ran my hand along the plastic tubing as well as all others I could reach. Do not feel any issues but can't put my eyes on it either. This weekend I'll try and put it on a lift and follow the entire length visually and by feel.
Just a thought but would anyone agree that the headers may be hearing the line up enough to cause vapor block but not enough to melt it?
Untreated headers will increase underhood temps significantly over factory manifold, i like the ideah of something like cerakote high temp ceramic coating made exactly for exhaust treatment

[speedtactics]

This is what I do and it cures the problem.