Hoodoo Man
Viper Owner
I am about to revive a 1998 RT/10 that has been sitting idle for several years. Would like to drain the old gas and put in new gas before starting the engine. Any ideas on how best to drain the gas tank?
Draining gas tank on '98 RT/10
- Thread starter Hoodoo Man
- Start date
mrbob
Enthusiast
hard plastic siphon hose 1/2 inch dia. that is what i did before i removed the tank to replace the pump. good luck
Get a pump OR, use a clear hose and fish it in your gas tank and begin sucking!!! as you see the gas getting toward your mouth in the CLEAR hose, put your finger over the end and lower into a gas can. Be careful with the second method because you can get some tasty fuel in your mouth!!! Both methods work but the first is safer.
SNKEBIT
Enthusiast
Thought there was a check ball in the fill tube to prevent gas coming out in rollover???
KNG SNKE
Enthusiast
There is a check ball in the gas tank which makes it a pain in the rear to siphon gas out (Hard to get the tube around this check valve). Remove the rear carpet and just open the top of the gas tank where the fuel pump is and siphon from there. Much easier.
Hoodoo Man
Viper Owner
Thanks for the reply. It looks like there are rivets that need to be removed on the fuel tank access panel in the trunk. How are these removed and are new rivets difficult to install? Are any special tools needed to remove the fuel pump; so that a siphon line can be inserted?
klamathpro
Viper Owner
I believe you need to drill the rivets out. A rivet gun and new rivets are required to reinstall, or think of a clever way to make the panel easily removable without rivets.
Mopar Steve
Enthusiast
The easiest way is to disconnect the fuel line at the engine and turn on the key it will pump it empty for you in just a couple minutes.
Matt M PA
Enthusiast
Switching on the key only allows the fuel pump to run for about one second.
KNG SNKE
Enthusiast
Yes drill the rivets. Don't reinstall rivets, pointless in case you plan on doing mods in the future. I replaced the rivets with U style fasteners and a screw through the top. Works well and is now easily removable. They will be at your local auto parts store on the rotating bolts rack.
http://www.google.com/imgres?biw=13...dsp=44&ved=1t:429,r:38,s:0,i:199&tx=143&ty=82
http://www.google.com/imgres?biw=13...dsp=44&ved=1t:429,r:38,s:0,i:199&tx=143&ty=82
SNKEBIT
Enthusiast
I use the Christmas tree push in fasteners instead of rivets. Some black silicone around the perimeter and push the pins in, looks like it should be that way.
Should be able to hot wire the pump or modify the tune to run continuous. Did this several times with other cars, but haven't needed to with the Viper.
Hoodoo Man
Viper Owner
KNG SNKE
Enthusiast
Hoodoo Man
Viper Owner
Thank-you very much for your help!
Larry
The fuel pump assembly is a large round piece of plastic that unscrews. Once you pop that rivnut cover off it will be self explanatory. No need to unplug everything from the assembly or remove it, unscrew it, lift slightly and put a hose in there to drain the tank.[/QUOTE]
Larry
The fuel pump assembly is a large round piece of plastic that unscrews. Once you pop that rivnut cover off it will be self explanatory. No need to unplug everything from the assembly or remove it, unscrew it, lift slightly and put a hose in there to drain the tank.[/QUOTE]
If you disconnect the fuel filter will she leak out?
I remember driving my tank close to empty before changing my fuel filter just in case but dont remember much leaking out...
I'd call the Wizard to get his input before drilling out the fuelpump rivets. He might have an easier method.
I remember driving my tank close to empty before changing my fuel filter just in case but dont remember much leaking out...
I'd call the Wizard to get his input before drilling out the fuelpump rivets. He might have an easier method.
Tom Sessions
Enthusiast
You can not access the fuel pump in a RT without removing the tank. You can in a GTS. I just did this yesterday on a 96rt. I would jumper the fuel pump relay and use the fuel pressure tap in the intake manifold to pump the fuel out of. Don't forget to install a new fuel filter when your done. That can be a real PITA. PM for tips on that.
KNG SNKE
Enthusiast
Crap, my fault OP. Didn't read you had an RT.
Warren S
Viper Owner
What Tom Sessions said. "I would jumper the fuel pump relay and use the fuel pressure tap in the intake manifold to pump the fuel out of..."
Pull out the fuel pump relay, run a bypass wire to connect the ignition switch output to the fuel pump relay output. What this does is allows you to continuously run the fuel pump so that it doesn't stop after a few seconds when you turn on the ignition switch. Remove the schrader valve covered by a brass cap on top of the intake manifold and run a 3/8" clear hose down to your gas can to pump out the old gas. If you hear the pump cavitating (air bubbles), turn it off for a moment so that you don't burn out the pump.
I do this on my '02 GTS, but I think the procedure is basically the same on a RT as mentioned by Tom by using your own car's fuel pump to pump out the old fuel out through the intake manifold.
I made some pics and instructions here:
http://share.shutterfly.com/action/welcome?sid=0CZtmzVw3cMWPS
Pull out the fuel pump relay, run a bypass wire to connect the ignition switch output to the fuel pump relay output. What this does is allows you to continuously run the fuel pump so that it doesn't stop after a few seconds when you turn on the ignition switch. Remove the schrader valve covered by a brass cap on top of the intake manifold and run a 3/8" clear hose down to your gas can to pump out the old gas. If you hear the pump cavitating (air bubbles), turn it off for a moment so that you don't burn out the pump.
I do this on my '02 GTS, but I think the procedure is basically the same on a RT as mentioned by Tom by using your own car's fuel pump to pump out the old fuel out through the intake manifold.
I made some pics and instructions here:
http://share.shutterfly.com/action/welcome?sid=0CZtmzVw3cMWPS
Hoodoo Man
Viper Owner
Thanks for your help Warren. I will probably start the project this weekend. The pics are greatly appreciated!!
Larry
scottmarston
Viper Owner
Nice demo! If you unhooked the fuel filter and attached the drain hose to that line while bypassing the relay, would you also be able to achieve the same goal?
Warren S
Viper Owner
Yeah, tried that already, but discovered it's a REAL PITA to get the fuel filter out from underneath. The so-called "quick disconnects" are not so and I wasn't a happy camper getting gas dripped on my face. Skip it unless you know for sure your filter is clogged and needs replacing. It's much easier by the upper intake manifold.
