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Old 20-03-2020, 08:17   #1
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Outboard fuel leak?

Good day all all

Outboard is running fine; starts right up, etc., etc., etc.
That said, I just started to notice a substantial sheen on the water when I get to the dinghy dock, so obviously, something is wrong.

Figured I would ask the collective, before I start pulling things apart for no good reason, on the most likely source of said fuel leak?

Thanks again for any help folks can offer!
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Old 20-03-2020, 08:41   #2
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Re: Outboard fuel leak?

Check/change your fuel filter, fuel line for cracks and also check the flat plate diaphragm fuel pump on the side of the carburetor for tightness of screws.
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Old 20-03-2020, 08:58   #3
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Re: Outboard fuel leak?

Thanks piloto.
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Old 20-03-2020, 10:38   #4
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Re: Outboard fuel leak?

When that happened to me, I discovered that the clip on the end of the fuel line connector that attached the tank to the motor was weak. While it looked like it fastened securely, it really didn't, allowing fuel to drip down the side of the motor into the water.

Cut the fuel line and put on a new connector with a new clip and problem solved.
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Old 20-03-2020, 11:20   #5
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Re: Outboard fuel leak?

Thank you Smokeys Kitchen.
Will do; sounds like a good preventive measure even if it turns out to be something else.
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Old 24-03-2020, 12:24   #6
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Re: Outboard fuel leak?

Quick update; just in case it can help someone else out in the future.
I pulled off the cowling on my 15hp Mercury Outboard and started her up to see if I could find the source of the fuel leak. While I havenít repaired it yet; I have to pull the carb out to get to it, I can see fuel squirting out at the diaphragm? gasket (see attached photo)

Ordered the repair kit from Amazon http://amzn.to/2QFMnaA (affiliate link) and should have it by Monday.

Thanks again folks!
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Old 04-04-2020, 13:55   #7
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Re: Outboard fuel leak?

Well, the job is done and I was mistaken!
The culprit was #15-16 in the exploded view (see previous post)
You can see where the membrane had ruptured/worn through in the attached image.

Fortunately, it too was part of the the kit I ordered!
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Old 04-04-2020, 15:43   #8
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Re: Outboard fuel leak?

Always nice to get to the root of the problem and get it licked!
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Old 04-04-2020, 16:03   #9
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Re: Outboard fuel leak?

Quote:
Originally Posted by Smokeys Kitchen View Post
Always nice to get to the root of the problem and get it licked!
Yes it is!
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Old 05-04-2020, 09:38   #10
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Re: Outboard fuel leak?

Not only the triumph of mystery solved, but also you fixed it yourself - totally cool!

I'd just like to add a thank you for posting the follow-up and solution. That's one of the drawbacks of this Forum - when members don't let us know how things turned out.

For instance, I'm currently wondering how things are going with curtinjuliana's diesel leak and their ICW trip...!
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Old 05-04-2020, 15:44   #11
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Re: Outboard fuel leak?

Quote:
Originally Posted by LittleWing77 View Post
Not only the triumph of mystery solved, but also you fixed it yourself - totally cool!

I'd just like to add a thank you for posting the follow-up and solution. That's one of the drawbacks of this Forum - when members don't let us know how things turned out.

For instance, I'm currently wondering how things are going with curtinjuliana's diesel leak and their ICW trip...!
Thank you LittleWing77!
Since you opened the door, Iíll step right on through... first time ever pulling a carb from an engine; dang proud!

And yes, whenever possible I go back and update my posts - figure it just might help someone someday.
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