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Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Diesel
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Diesel This is a forum dedicated to diesel engines and their applicable accessories.


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Old 05-05-2013
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Gotta find my fuel leak...

Well...
The fun starts on my cheap boat

I started the engine on the hard last week to make sure it ran before splash and yesterday found a puddle of fuel on the top of the tank. I have to go today to finish the launch prep so I will wipe off the tank, fire it up again, and see where the leak is.

Let's hope for an easy fix

P.S - The good news is it fired right up

Last edited by blutoyz; 05-05-2013 at 11:22 AM.
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Old 05-05-2013
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Re: Gotta find my fuel leak...

False alarm...
That fuel could have been there since the fill up in the fall. I will have to keep and eye on it but did not see any leaks
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Old 05-05-2013
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Re: Gotta find my fuel leak...

Unless it's a really deep pool, it should have evaporated. How much diesel are you seeing? A cup? A quart?
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Old 05-06-2013
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Re: Gotta find my fuel leak...

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Originally Posted by FarCry View Post
Unless it's a really deep pool, it should have evaporated. How much diesel are you seeing? A cup? A quart?
I don't even think there was a cup there, a puddle 1/4" at the deepest point 3-4" around. It soaked right up with some paper towels
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Old 05-06-2013
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Re: Gotta find my fuel leak...

Fuel rarely leaks "up" from a tank. OTOH fuel inlets and filler hoses have been known to leak, and vents or access ports for the gauge float may overflow if the tank has really been filled to the top. I'd expect fuel from "last year" to have evaporated over the winter, even diesel fuel.
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Old 05-06-2013
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Re: Gotta find my fuel leak...

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Originally Posted by hellosailor View Post
Fuel rarely leaks "up" from a tank. OTOH fuel inlets and filler hoses have been known to leak, and vents or access ports for the gauge float may overflow if the tank has really been filled to the top. I'd expect fuel from "last year" to have evaporated over the winter, even diesel fuel.
My money is up throught the gauge sending unit. It is getting warmer so maybe the vent is clogged. I will pull the cap and see if there is pressure to be safe
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Re: Gotta find my fuel leak...

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Originally Posted by blutoyz View Post
My money is up throught the gauge sending unit. It is getting warmer so maybe the vent is clogged. I will pull the cap and see if there is pressure to be safe
Has the fuel leak come back since you wiped it up? Can you run the engine for an hour or more to lower the fuel level and see if the leak stops? You said you noticed the fuel after running the engine. Could it be coming from the fuel return line?
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Old 05-06-2013
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Re: Gotta find my fuel leak...

I will post again next week after some more maintenance time
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