Siphoning out 2 year old fuel on my 93 Z?

93camaroLT1 · 11-24-2006, 03:23 AM

Ok, so as of now I got 5 gallons of close to 2 year old 110 octane fuel in my tank. The tuning is set up to completely disable knock retard and the motor has about 30 mins of run time on it total. I'd like to siphon this crap fuel out and put in new stuff, but i've heard that newer cars got a baffle that prevents you from just sticking a tube down into the tank to siphon out the fuel.. Is this true? If it is, how do I go about getting this fuel out of the tank? Also if there is a baffle in keeping me from siphoning the fuel out could I at this point just put in some fuel stabilizer in and then this summer just mix in another 5 gallons of 110 octane and run it like that? (It actually only needs 93 oct. fuel, I just put in 110 oct. right after the initial cam break in)

TobyZ28 · 11-24-2006, 03:46 AM

I'm not sure if this will work, but maybe unhooking the fuel filter will be enough to allow it to drain? Prime the car maybe? just an idea

cehan · 11-24-2006, 07:35 AM

This is how I did it. I went to my local U-Pull-It and got the fuel pump connector off the driver side rear seat bulkhead from a wrecked Camaro. I soldered a couple of jumper wires to the connector with alligator clips that I could connect to a battery. Then disconnect the fuel line to the filter, attach a piece of hose to it. Connect the pump connector to the bulkhead connector and then the clips to the battery. The pump starts and empties the tank.

steve9899 · 11-24-2006, 07:53 AM

Disconnect fuel line at filter. Turn on key to run fuel out of tank (don't run it totally dry, leave maybe 1 gal in there.)

Put it back together, fill the tank with fresh fuel, add the stabilizer, and run the engine to get the fresh/stabilized fuel throughout.

sseeya · 11-24-2006, 08:51 AM

Quote:

Originally Posted by steve9899

Disconnect fuel line at filter. Turn on key to run fuel out of tank (don't run it totally dry, leave maybe 1 gal in there.)

That won't work. The fuel pump will prime, but it won't continue to run if the engine is not running.

Lonnie Pavtis · 11-24-2006, 10:01 AM

2 year old race fuel is probably still good. The additives tend to make it more stable than pump fuel. I would not waste the gas.

I had my '68 Camaro in storage for 5 years. It ran fine on the old VP fuel in there. Take it for an easy ride to get everything circulating & up to temp. If you truely need 110 octane, it will likely use it very quickly anyway.

If you are still worried, add some fresh race gas to it, but there is no need to throw it away.

Jerm93z28 · 11-24-2006, 10:38 AM

im with lonnie, just run it.

Injuneer · 11-24-2006, 11:21 AM

If you do decide to remove it, try using a siphon hose. Its just a matter of jiggling the hose enough to get it past the obstructions in the fill pipe, but its not all that hard to do.

93camaroLT1 · 11-25-2006, 05:02 AM

Quote:

Originally Posted by Lonnie Pavtis

2 year old race fuel is probably still good. The additives tend to make it more stable than pump fuel. I would not waste the gas.

I had my '68 Camaro in storage for 5 years. It ran fine on the old VP fuel in there. Take it for an easy ride to get everything circulating & up to temp. If you truely need 110 octane, it will likely use it very quickly anyway.

If you are still worried, add some fresh race gas to it, but there is no need to throw it away.

Well it actually only needs 93 octane fuel, so it sounds like 1 1/2 to 2 year old 110 should be alright considering you ran your car on 5 year old gas.. I think i'm just gonna throw a whole container of fuel stabilizer in tommorrow and then when I get back this summer i'll just mix in another 5 gallons of 110 oct race gas and hopefully that'll be good.

Lonnie Pavtis · 11-25-2006, 09:35 PM

Don't add the stabilizer. That does nothing to improve the fuel, only to protect it from deterioration. You cannot reverse the process. It is also not a high octane substance.

If it will run on 93, just add a gallon or 2 of 93 to your present tank. Nothing to worry about.

DAdkins23 · 11-26-2006, 12:13 AM

110 Octane shouldn't have gone bad in just 1 1/2 years. Like Lonnie said, I've seen people fire their motors up on cars that have been sitting way longer than you stated, but if you have a lot of money invested into your motor, like Injuneer said, take a small tube and jiggle it past the obstruction.

Maybe connect you're fuel lines to a junkyard motor?

Dax