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Super Moderator Eco-Logistical
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Discussion Starter · #1 ·
I am guessing it is a check valve?

I will get new rubber and seal it up, just wondering what it was...
 

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Can you share a picture of said dohicky?
 

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Super Moderator Eco-Logistical
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Discussion Starter · #3 ·

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Super Moderator Eco-Logistical
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Discussion Starter · #4 ·

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Ronald Reagan fan
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Yeah that’s a check valve.
 

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Super Moderator Eco-Logistical
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Discussion Starter · #6 ·
I just noticed it, while checking things on the truck… a prime location for air leaks I’d say.
I will check all my trucks. I never knew this was there…
 

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Mine doesn't have it. I guessing it is something that a previous owner installed for some reason. I would guess it is so that the fuel doesn't drain back to the tank when not running. I would guess it would in theory cause easier starts due to not having to prime the line.
 

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Ronald Reagan fan
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The check valves are handy to have for sure.At least theres no chance of fuel escaping and running backwards.
 

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Fuel will only run backwards when your factory lift pump half dies. Kind of a nice touch, but smarter to just run fuel psi gauge.
 
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