Moderated Discussion Areas
  ContinuousWave: Whaler Repairs/Mods
  Gas tank not venting

Post New Topic  Post Reply
search | FAQ | profile | register | author help

Author Topic:   Gas tank not venting
Marc posted 11-12-2003 05:38 PM ET (US)   Profile for Marc   Send Email to Marc  
I have a 1991 Outrage 17 but I think this problem could happen to any Whaler with a built in gas tank.

Problem: When filling up the gas tank it would shut off every second or two. I tried several positions with the nozzle but it kept shutting off. Upon closer examination, I noticed that the gas was not flowing into the tank like it should. It was actually bubbling up like the tank was full. I know it wasn't full since I had burned at least 15 gallons since the last fill up. It appeared or appears that the tank isn't venting as designed.

I have a vent cap (I guess that's what it's called) on the opposite side of the fill.

So my question is how can I check or troubleshoot this problem if its venting correctly or detemine if there is some other problem? Any and all suggestions would be greatly appreciated. It took about 10 to 15 minutes just to get 10 gallons in. Even my eight year old sea dog asked: What's taking so long dad!? :-)

Thanks to all in advance!


DaveH posted 11-12-2003 07:36 PM ET (US)     Profile for DaveH  Send Email to DaveH     
Check for a blockage in the vent line hose or screen on the hull side fitting. There should be a removable round panel to allow access to them as I recall. The screen may just have corrosion on the mesh part or bugs have lodged themselves in the line.
jimh posted 11-12-2003 08:07 PM ET (US)     Profile for jimh  Send Email to jimh     
When I am fueling my boat (on the trailer) I generally always check the vent for proper operation. Typically you can place your finger in close proximity to the vent and feel the air flow exhausting from it.
Dick posted 11-12-2003 10:20 PM ET (US)     Profile for Dick  Send Email to Dick     

Does your fuel fill have the pop up cap with the internal vent?

If so, that is your problem. BW had a recall on them years ago.

It would need replaced with a standard deck fill and a seperate overboard vent. You could try one of the new Attwood fill/vent units, the problem may have been corrected.


Sal DiMercurio posted 11-12-2003 11:42 PM ET (US)     Profile for Sal DiMercurio  Send Email to Sal DiMercurio     
He said theres a vent on the opposite side, so that eliminates the vent in the gas opening.
Try blowing real hard into the vent & if it's hard to blow into, it's blocked some place along the line.
You can dissconnect it from the outside vent cap [ with the fill cap off ]& put a compressed air hose to the vent hose & let her rip a couple times, if that dosen't cure it, replace the whole vent line, it's not a big deal at all.
Now, if your vent line is completely blocked, your engine would die from lack of fuel & your sqeeze ball would go flat, kind of like a vapor lock.
Marc posted 11-13-2003 03:27 PM ET (US)     Profile for Marc  Send Email to Marc     
Sal, you are correct. There is a vent on the opposite side. I looked at it last night and cannot tell if it is blocked or not. I'll try using some compressed air to see if I can clear it out if in fact it is plugged at the vent.

I'll try taking it apart if that doesn't do the trick. Taking it apart would be easy but the clamps are recessed in such a way that makes it difficult to get a screw driver in there.

Thanks to everyone (Sal, Dave, Jim and Dick) for the ideas. I'll let you know what I find out.

P.S. (side thread) - Sal, where you killing the stripers?


Sal DiMercurio posted 11-13-2003 11:52 PM ET (US)     Profile for Sal DiMercurio  Send Email to Sal DiMercurio     
Marc, the river is full of em.
Pounded em at Dutch slough, [ trolling & plugging ] chain island [ trolling ]Susiun Bay in "VERY" shallow water [ like 2 ft ] with live bullheads no sinkers.
Caught 30 plus fish yesterday on the troll, all catch & release except for the 2, I kept.
If your on the troll or plugging, they sure seem to favor the silver & black lures right now but soon will want chartreuse or white.
Tom W Clark posted 11-14-2003 01:04 AM ET (US)     Profile for Tom W Clark  Send Email to Tom W Clark     

If your vent is blocked you will have difficulty adding fuel but I would not be so quick to assume that is your problem. On my Outrage 18 I learned early on that adding fuel could be very difficult if the fuel nozzle was not positioned just so. If it was not positioned correctly, I would suffer the same symptoms as you describe. This would occur with no blockage to my vent at all.

I do not know if the Outrage 17 has its fuel tank rigged in a way similar to the older Outrage 18s but it may.

I found that it was vitally important to have the fuel nozzle curved in the same direction as the bend in the filler pipe as it makes its way to the tank. This meant that I would make sure the nozzle was held as if I were holding it from the inside of the boat. I sometimes simply climbed into the boat to make it easier to fill.

It is also important to make sure the tip of the nozzle is past the attachment point for the safety chain on the cap inside the fill. I found that if the tip of the nozzle hung up on that part of the fill, I was in for a messy time of it.

I also know that the newer Whalers that had a vent integral with the fill were an absolute bear to fill I was once completely unable to add fuel to a Dauntless 15 while it was in water. The only way I could do it was to fill it while the boat was on its trailer and the bow was pointed downhill. I believe this is the problem that Dick refers to above. It does not sound like this is the case with your boat.

By way way, the difficulty I had with my Outrage 18 is fairly common. There have been several threads in the past where we talked about this same trouble.

Marc posted 11-14-2003 10:08 AM ET (US)     Profile for Marc  Send Email to Marc     

Thinking about this problem more, I can tell you, I have never really had an easy time filling the tank. But the last time was nearly impossible. I understand the issue with positioning the fuel nozzle as you describe. I will definitely pay more attention to that this Sunday when I fill it again.

Thanks, Marc.

Marc posted 11-29-2003 07:58 PM ET (US)     Profile for Marc  Send Email to Marc     
Tried using some compressed air to clean out the vent. I was able to fill the tank without any problems at all. It actually worked better than any other time filling it. Thanks again for the help.


Sal DiMercurio posted 11-29-2003 09:10 PM ET (US)     Profile for Sal DiMercurio  Send Email to Sal DiMercurio     
Marc, I'v see hornets make a nest in the fuel vent & other bugs so if you blew it through with compressed air, thats most likely what happened.
I'v also seen a few boats that have that [ hard to fill ] problem right from the factory because the vent isn't big enough or high enough & the fuel just belches back at you.
Marc posted 11-30-2003 06:38 PM ET (US)     Profile for Marc  Send Email to Marc     
Sal, we've actually had some hornet/wasp nests around our house so it wouldn't surprise me if those little nasty buggers made a nest in there. I'll have to have Clark Pest Control spray my Whaler too! :-)

Side Note: Sal, haven't made it down to the Bay for those Stripers but have been getting some locally at the Port.


Sal DiMercurio posted 12-01-2003 12:45 AM ET (US)     Profile for Sal DiMercurio  Send Email to Sal DiMercurio     
Marc, it's absolutly wide open from the power lines above Collinsville, down to Honker bay [ Sacramento river ], on the troll & bullheads [ anchored ]
A buddy just called & told me lots of big fish in the Stanislas river.

Post New Topic  Post Reply
Hop to:

Contact Us | RETURN to ContinuousWave Top Page

Powered by: Ultimate Bulletin Board, Freeware Version 2000
Purchase our Licensed Version- which adds many more features!
© Infopop Corporation (formerly Madrona Park, Inc.), 1998 - 2000.