Fuel Filter connection leak....confused :/
Thread Starter
Intermediate
Joined: Aug 2021
Posts: 34
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From: New Jersey
Fuel Filter connection leak....confused :/
Today I changed my inline fuel filter on my 73' (which I temporarily installed a few months ago as a first line of defense from debris getting into the carb). It is installed in between the main line and fuel filter. I also changed the paper filter in the carb. For me this is routine, I have done it may times. However, earlier today, after I finished, the metal line running from the fuel filter to the carb is leaking at the fuel filter connection. When changing the paper filter, I didn't do anything out of the ordinary when removing, then installing the fuel line from the carb. I haven't touched that connection since I installed a new fuel filter last summer. It is tight, I checked. Any thoughts?
Tech Contributor
Joined: Aug 1999
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From: At my Bar drinking and wrenching in Lafayette Colorado
Did you lubricate the threads and the back side of the flare prior to assembling it..? You also need to verify if the leak is between the flared fitting and the inlet nut fitting, or if it's between the inlet nut fitting and the float bowl.
Thread Starter
Intermediate
Joined: Aug 2021
Posts: 34
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From: New Jersey
Definitely between the flare and inlet nut. I not 100% positive, but I do not recall lubricating.
Tech Contributor
Joined: Aug 1999
Posts: 14,379
Likes: 6,390
From: At my Bar drinking and wrenching in Lafayette Colorado
If you did not lubricate, it won't tighten up properly. Disassemble it, dry it, clean it, lube it, and re-assemble. Do not use Teflon tape.
Thread Starter
Intermediate
Joined: Aug 2021
Posts: 34
Likes: 2
From: New Jersey
Tech Contributor
Joined: Aug 1999
Posts: 14,379
Likes: 6,390
From: At my Bar drinking and wrenching in Lafayette Colorado
Either process-specific assembly lube or plain ol' wheel bearing grease. Clean & dry the threads and flared surfaces before applying lube.
Lars
Lars
