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Old 10-05-2011, 11:46 PM   #1
72gmcshorty
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What are these pipes?

This is the sending unit i am using. It's from an 87 blazer. What are all the pipes for? one is the incoming and another is the return. One goes to a little rattle ball thing and the big one just does nothing. Any ideas?
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Old 10-05-2011, 11:47 PM   #2
72gmcshorty
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Re: What are these pipes?

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Old 10-06-2011, 12:51 AM   #3
Dillon79scotts
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Re: What are these pipes?

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Originally Posted by 72gmcshorty View Post
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vent, return, outlet, inlet im assuming
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Old 10-06-2011, 10:25 AM   #4
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Re: What are these pipes?

The two with the nuts are feed and return. The small one without the nut goes to the charcoal canister and the large one is the fill vent.
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Old 10-06-2011, 11:55 AM   #5
72gmcshorty
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Re: What are these pipes?

Since i won't using a charcoal canister, do i just cap it off?
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Old 10-07-2011, 02:44 PM   #6
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Re: What are these pipes?

That's what I would do. Just make sure your cap is fuel vapor compatible and use a vented fuel cap.
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