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Old 20-02-2016, 14:37   #1
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Possible Fuel Leak

If this kind of fuel return elbow is leaking where it connects to the fuel tank (grey) is there a way to tighten it. It now spins pretty free, but no up and down play, just like the other tank, which doesn't so signs of possible leaking.

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I haven't identified the leak just yet, is it even possible for these to leak and is there a way to test for leaks other than fill the tank slowly until full and the leak is obvious.

Thanks


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Old 20-02-2016, 15:01   #2
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Re: Possible Fuel Leak

Could be a compressible washer goes on the top and bottom of the square fitting. Often a soft brass washer.
Another choice might be to replace the fitting going into the tank...

Leak could be somewhere in the fuel line where it rubs.

To pressure test, fuel filler and vent has to be sealed. Also the fuel lines should be tested. Low pressure, 5 psi is plenty for the tank.
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Old 20-02-2016, 15:03   #3
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Re: Possible Fuel Leak

Do you know how that fitting is removed from the tank?


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Old 20-02-2016, 15:16   #4
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Re: Possible Fuel Leak

I haven't identified the leak just yet, is it even possible for these to leak and is there a way to test for leaks other than fill the tank slowly until full and the leak is obvious.

Thanks


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close all valves and apply a small amount of air pressure, few psi, to the tank vent. Some small shop vacs let you hook the hose to the outlet. Use a spray bottle with water and dish soap. Spray the suspect area and watch for bubbles.
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Old 20-02-2016, 17:21   #5
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Re: Possible Fuel Leak

I'll give that a try next time I have everything open.

Thanks


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Old 20-02-2016, 17:35   #6
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Re: Possible Fuel Leak

Quote:
Originally Posted by theway View Post
If this kind of fuel return elbow is leaking where it connects to the fuel tank (grey) is there a way to tighten it. It now spins pretty free, but no up and down play, just like the other tank, which doesn't so signs of possible leaking.

Attachment 119331



I haven't identified the leak just yet, is it even possible for these to leak and is there a way to test for leaks other than fill the tank slowly until full and the leak is obvious.

Thanks


Sent from my iPhone using Cruisers Sailing Forum
Could it be one of these type of hydraulic/fuel fittings.And the o-ring is missing where it enters tank.?

ORB swivel 90 5/8 In. O-Ring X 1/2 In. NPSM 90 Degree Adjustable Male ORB to NPSM Female Swivel Adapter 142930 - Dayco (142930)
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Old 22-02-2016, 18:19   #7
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Re: Possible Fuel Leak

awful lot of pieces and joints to leak. how about replacing the whole mess with a barbed elbow pipe adapter?

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Old 22-02-2016, 21:55   #8
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Re: Possible Fuel Leak

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awful lot of pieces and joints to leak. how about replacing the whole mess with a barbed elbow pipe adapter?

McMaster-Carr
Agree-a 90deg male pipe to hose barb would be the most foolproof fitting.

My thought from his description of it turning was that he may be able to just tighten what is there.

Cheers/ Len
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