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Remove ga

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2994Artie

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Help,I need to remove the old gas from my boat, how the hell can I do this.ive been told take the primer bulb line off, take a 3/8 inch hose put it on the nipple where the primer bulb was attached to and drain and pull the fuel from there, I need to take out about 20 gallons. Help give me hope and ideas to do this.im finally going to get my boat in the water after a few years on the driveway.i hope somebody can give me a great and easy way of doing this.things never come easy. Thank you Finally Retired SSGT BORGER US ARMY. 28 years and yes I'm proud.
 
After you get the old gas out, have you got a proper place to dispose of it ?? The laws down here in FL are HELL.
 
Yes it's on trailer,I've tried putting a 3/8 inch tube down gas tank and it stops at a certain spot.ive also taken the bulb off the engine and tried pumping it with the bulb into a bucket and it flows for 15 secs than stops.also where the bulb or the gas line that goes into engine it is attached to a nipple should I trie putting a 3/8 inch line to that and spying from that.also the vent that is in the back of the boat should a cover that so no air comes out will it work better.
 
Old Gas..... Sometimes one gets lucky and the gas is okay regardless of the storage period. There's nothing like the smell of stale gas... it'll make a drunken skunk head for the hills hell bent for election (whatever that means). If it still smells like regular gas, use it.

However, when draining, the only choice is to siphon or pump it out via the fuel supply hose (primer bulb line). Have the boat as level as possible... OR... if you can get at a large enough portion of the tank to place a level on it... level the tank.

It will be necessary to remove the "Anti Siphon" valve from the tank. It's the fitting that the fuel hose connects to on top of the tank, described as follows. This is why the siphoning action stops after 15 seconds at the presenht time.

********************
(Fuel Anti Siphon Valve)
(J. Reeves)

Many of the later OMC V/6 engines incorporate a fuel restriction warning via a vacuum device attached to the powerhead. If the engine overheats, or if you have a fuel restriction, the warning is the same.... a steady constant beep.

NOTE... Only the V/6 & V/8 engines have the above "Fuel Restriction Warning". The warning horn will not sound on the other models.

The fact that a engine is not overheating, but the warning horn sounds off with a constant steady beep, and that the rpms drop drastically would indicate that the engine is starving for fuel due to a fuel restriction. Check the built in fuel tank where the rubber fuel line attaches to the tank fitting. That fitting is in all probability a "Anti Siphon" valve which is notorious for sticking in a semi closed position. It will be aluminum, about 2" long, and the insides of it will consist of a spring, a ball, and a ball seat. If this valve exists, remove it, knock out those inner components which will convert it to a straight through fitting, then re-install it. Hopefully that cures the problem.

The above procedure will cure a restriction problem with the anti siphon valve as stated. BUT, it may also allow fuel to drain backwards to the fuel tank when the engine is not running (siphoning backwards) due to the fact that the carburetors/fuel pump etc are higher than the fuel tank. This condition is not an absolute as the valves in the fuel primer bulb usually prevent this backwards siphoning problem. However.... if this does take place, the cure would be to install a new anti siphon valve.

NOTE: There has been cases when the output valve in the fuel primer bulb would come apart, and the inner portion of the valve would actually reverse itself and be drawn back into the primer bulb's output valve body. This in effect would create a shut off valve and result in a fuel restriction. If this is the case, you should be able to feel something laying in the bottom of the primer bulb when held horizontally.
 
I'm not that handy about boats,I'm a very handy guy carpenter and mason and a lot more but boat stuff like this is driving me crazy. Inside the boat there is a big cover to the fuel tank should I remove that cover and go right into tank,or should I try again with tube down to gas tank,but I've tried that and the hose stopped down inside at a certain point.what other choice do I have.if I can't syphon out of where the bulb goes into engine because it has a stop syphon in it.but I need get this done.
 
Normally at some point in that large cover there is a round pop out access cover about a foot in diameter which should allow you to get at that anti siphon valve.
 
You misread my reply.... I said "Normally at some point in that large cover there is a round pop out access cover about a foot in diameter which should allow you to get at that anti siphon valve."
 
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