Draining Fuel
Thread Starter
TECH Regular
Joined: Jul 2005
Posts: 479
Likes: 0
Draining Fuel Hello,
I have been storing my car each winter for the past 4 years. For the past 2 summers, I've only been able to drive the car a hand full of times so I haven't been able to go through much gas. Last year I was able to go through a half tank, so before I stored it, I filled it up and added some sta-bill. This past summer I drove the car even less due to a bad inspection, so I've only gone through about an 8th of a tank. Some of the gas (half tank) has now been in there for 2 years, so I'd like to get it all out and start fresh. The original tank from 2 years ago was treated with sta-bill as well, so I'm pretty sure the gas in there now is fine, but I don't want it to sit for another winter.
Is there any way to siphon out the gas? I've read that some people can and some people can't due to to whatever anti-siphoning parts are in the filler neck.
I've also read about some people jumping the fuel pump relay and attaching a hose to the filter. I'd rather not do this if possible because I don't like the idea of having open fuel lines with the battery connected.
If anybody has any suggestions, I'd really appreciate it.
Thanks in advance.
I have been storing my car each winter for the past 4 years. For the past 2 summers, I've only been able to drive the car a hand full of times so I haven't been able to go through much gas. Last year I was able to go through a half tank, so before I stored it, I filled it up and added some sta-bill. This past summer I drove the car even less due to a bad inspection, so I've only gone through about an 8th of a tank. Some of the gas (half tank) has now been in there for 2 years, so I'd like to get it all out and start fresh. The original tank from 2 years ago was treated with sta-bill as well, so I'm pretty sure the gas in there now is fine, but I don't want it to sit for another winter.
Is there any way to siphon out the gas? I've read that some people can and some people can't due to to whatever anti-siphoning parts are in the filler neck.
I've also read about some people jumping the fuel pump relay and attaching a hose to the filter. I'd rather not do this if possible because I don't like the idea of having open fuel lines with the battery connected.
If anybody has any suggestions, I'd really appreciate it.
Thanks in advance.
Banned
Joined: Jun 2010
Posts: 149
Likes: 1
From: Braselton,Ga
go to your local auto parts store and buy a cheap inline electric fuel pump.
Then buy some hose that will fit your electric fuel pump make sure you buy enough hose to run down the filler neck and to the bottom of the tank and enough hose for the other end of the pump to go into your gas container.
Then use your car battery to run the electric pump.
Then next time you want to drain your tank you'll have what is needed to drain the tank agian.
Then buy some hose that will fit your electric fuel pump make sure you buy enough hose to run down the filler neck and to the bottom of the tank and enough hose for the other end of the pump to go into your gas container.
Then use your car battery to run the electric pump.
Then next time you want to drain your tank you'll have what is needed to drain the tank agian.
pull the shrader valve out of your fuel rail use nitrous line or any kind of hose. If you know someone with hp tuners have them turn the fuel pump on and pump it into gas cans
Thread Starter
TECH Regular
Joined: Jul 2005
Posts: 479
Likes: 0
Would the injectors be spraying fuel if the pump has power and nothing else?
Or could I do the above minus jumping the relay and just have the car idle so the pump is on?
I guess either the above would take a while since the diameter of the hose isn't that big.
Thanks again.
Teching In
Joined: Nov 2005
Posts: 22
Likes: 0
From: Eagle WI
Not trying to hijack this thread but I am in the same predicament with a 7K car that has been sitting for 4 years ( I know, shame on me, start flaming but I'm broke and I will keep it till I cannot physically get up the strength to push in the clutch!
) For the record, can you stick a siphon hose down the filler neck and suck out the fuel?????? Or is there some sort of device that prevents siphoning?
) For the record, can you stick a siphon hose down the filler neck and suck out the fuel?????? Or is there some sort of device that prevents siphoning? 
Banned
Joined: Mar 2010
Posts: 334
Likes: 3
Thanks for the reply. I If I were to hook up a fuel pressure gauge with a blow off valve on it and jump the pump relay, would I achieve the same thing?
Would the injectors be spraying fuel if the pump has power and nothing else?
Or could I do the above minus jumping the relay and just have the car idle so the pump is on?
I guess either the above would take a while since the diameter of the hose isn't that big.
Thanks again.
Would the injectors be spraying fuel if the pump has power and nothing else?
Or could I do the above minus jumping the relay and just have the car idle so the pump is on?
I guess either the above would take a while since the diameter of the hose isn't that big.
Thanks again.
I think there must be something blocking a standard siphon hose. I tried today. My Camaro is wrecked but has 3/4 tank of fuel in it. My truck is near empty, so I figured heck get the fuel from the Camaro and put it in the truck, since I already paid for it! But the hose only goes down the filler neck part way and I can't get it to siphon any gas out!
I guess I may try the trap door. The car is a wreck anyway so it isn't like it matters much to cut a hole in it
I guess I may try the trap door. The car is a wreck anyway so it isn't like it matters much to cut a hole in it
Trending Topics
I've tried and failed in the past to siphon the tank on my 02 Z/28. This time I used really small line, I think it was 3/16" clear tubing. It took some poking and twisting but I got the line all the way in there. I siphoned almost all on the gas out! It required a few repositionings once it was almost empty, but when the tank came out all that was left in there was a little bit that I was able to soak up with paper towels.
Be patient, siphoning with small tubing worked for me.
Be patient, siphoning with small tubing worked for me.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
