help fuel issue

[mccoytr]

Okay all need some help. Seems someone likes my fuel or tried to like my fuel. Any how they left the gas cap off and I know it was on 2 weeks ago. Since then I have had about 2 to 3 inch of rain here. I use marine stabile every time I put gas in her. I have a water separator installed with spar filters on board.

How much water do you folks think got into my fuel system?
Should I drain it?

What should I do?

 

[Bondo]

Re: help fuel issue

Okay all need some help. Seems someone likes my fuel or tried to like my fuel. Any how they left the gas cap off and I know it was on 2 weeks ago. Since then I have had about 2 to 3 inch of rain here. I use marine stabile every time I put gas in her. I have a water separator installed with spar filters on board.

How much water do you folks think got into my fuel system?
Should I drain it?

What should I do?

Ayuh,.... Suck a gallon or so outa it, through the pick-up hose, 'n See if it's water, or gasoline....

Water will be on the Bottom of the fuel...

 

[EddiePetty]

Re: help fuel issue

Copied from a previous, similar post:

Re: Good amount of water in gas - how best to deal with it?


Assuming a built in tank with the pickup in the aft end:

Elevate the bow and allow the fuel to settle for at least a day. Remove the fuel sender/pickup and siphon the bulk of the water from the aft/bottom of the tank. Reassemble and install your water separator. With the bow still elevated, run the engine for several minute intervals, changing filters between runs. Empty used filters in clear containers to check for water content. Continue reusing the filters until water is at a minimum. Install a new filter and go boating.
Eddie Petty. #3 Dirt Modified
Courtland, Virginia
V-20 Wellcraft
3.7 470 Mercruiser

Stumpnocker
25 Yamaha, 25 Johnson, 25 Evinrude, 9.9 Evinrude, 4 Johnson

 

[bruceb58]

Re: help fuel issue

You actually may not have that much water in the tank depending on the angle of the fill and if water can run into the hole, it will be worse. I would just siphon some from the bottom like others have mentioned.

 

[sccatfish]

Re: help fuel issue

Assuming 3" of rain in a 2" circular opening, that would be about .04 gallons (5.2 ounces) or about 2/3 of a cup (basically the volume of a cylinder 2" in diameter and 3" long). It could be more if water can run into the opening from other places. It could be less if the opening is at an angle or partially covered.

 

[atika]

Re: help fuel issue

Assuming 3" of rain in a 2" circular opening, that would be about .04 gallons (5.2 ounces) or about 2/3 of a cup (basically the volume of a cylinder 2" in diameter and 3" long). It could be more if water can run into the opening from other places. It could be less if the opening is at an angle or partially covered.

your math seems correct but do you consider going boating with mixed fuel... its partially dangerous..

 

[bruceb58]

Re: help fuel issue

your math seems correct but do you consider going boating with mixed fuel... its partially dangerous..

Curious where you think he stated to go boating with mixed fuel.

 

[UncleWillie]

Re: help fuel issue

your math seems correct but do you consider going boating with mixed fuel... its partially dangerous..

9 gallons of E-10 gas will absorb the 5.2 oz of water without a problem.
You would never know it was there.

 

[bruceb58]

Re: help fuel issue

9 gallons of E-10 gas will absorb the 5.2 oz of water without a problem.
You would never know it was there.

That's at 60?. Would need more as it got colder.

 

[UncleWillie]

Re: help fuel issue

That's at 60?. Would need more as it got colder.

Absolutely true!
I am going to go out on a limb and take a wild guess that his tank is at least two or three times larger than 9 gallons.

 

[frfly172]

Re: help fuel issue

Take new filters and some fresh gas and take the boat for a run .if boat starts to have a problem change filters with fresh gas .