What is this hose for?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jayharrell · 04-02-2008, 02:38 AM

Well got a tank for relocation. But what is the 3rd small hose for??

I get all the rest. Filler, vent, fuel pump, fuel return, but can't figure out the last one. It came out of a 85ish suburban. Maybe fuel rail return in addition to the pump return??

ed2552 · 04-02-2008, 02:40 AM

That would be a good guess, just cap it and it shouldn't give you any problems

Sonny · 04-02-2008, 02:41 AM

Vapor canister return? Pull the assembly and see what it does/where it goes.

jayharrell · 04-02-2008, 02:43 AM

When in doubt, remove the problem. I was planning on capping one of the three. But the Eeny Meeny Miny Moe process as layed out in my chilton manual didn't seem to fit long term plans.

Eh, one outa three ain't bad.

jayharrell · 04-02-2008, 02:54 AM

Here's the under side. Looks like your right. Some sorta vapor return off the throttle body. Seems it just dumps into the main body there and out that little pin hole on the right.

mtndewmaniac66 · 04-02-2008, 02:58 AM

Quote:

Originally Posted by Sonny

Vapor canister return? Pull the assembly and see what it does/where it goes.

I second the motion. It doesn't take much to remove the retaining ring and look at where it goes to.

71swb4x4 · 04-02-2008, 03:01 AM

I agree with the others, it goes to the charcoal canister.

04-02-2008, 02:38 AM	#1
jayharrell Gettin By on Gettin By Join Date: Jan 2008 Location: Cedar Creek, Tx Posts: 1,033	What is this hose for?? Well got a tank for relocation. But what is the 3rd small hose for?? I get all the rest. Filler, vent, fuel pump, fuel return, but can't figure out the last one. It came out of a 85ish suburban. Maybe fuel rail return in addition to the pump return?? Attached Images

04-02-2008, 02:40 AM	#2
ed2552 Registered User Join Date: Jan 2007 Location: Charles City IA Posts: 1,626	Re: What is this hose for?? That would be a good guess, just cap it and it shouldn't give you any problems __________________ '67 C20, Under the Knife!, LWB, Eaton HO-52, Rear Coil Springs 72' GMC C2500, 350, TH400(?), Dana 60 '67 K10 4-spd., 305, SM465, Dana 44, 12 Bolt, RUST! '65 C60 292, 4 spd, 2 spd Rearend, 15' Grain Box, MINT! 09 Yukon Denali 82k Miles 6.2L/6A

04-02-2008, 02:41 AM	#3
Sonny Active Member Join Date: Jan 2004 Location: Centerville, GA Posts: 240	Re: What is this hose for?? Vapor canister return? Pull the assembly and see what it does/where it goes. __________________ Sonny New Project: 67 Small window SWB 2006 Crew Cab Silverado LT Last edited by Sonny; 04-02-2008 at 02:42 AM.

04-02-2008, 02:43 AM	#4
jayharrell Gettin By on Gettin By Join Date: Jan 2008 Location: Cedar Creek, Tx Posts: 1,033	Re: What is this hose for?? When in doubt, remove the problem. I was planning on capping one of the three. But the Eeny Meeny Miny Moe process as layed out in my chilton manual didn't seem to fit long term plans. Eh, one outa three ain't bad.

04-02-2008, 02:54 AM	#5
jayharrell Gettin By on Gettin By Join Date: Jan 2008 Location: Cedar Creek, Tx Posts: 1,033	Re: What is this hose for?? Here's the under side. Looks like your right. Some sorta vapor return off the throttle body. Seems it just dumps into the main body there and out that little pin hole on the right. Attached Images Last edited by jayharrell; 04-02-2008 at 02:55 AM.

04-02-2008, 03:01 AM	#7
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Re: What is this hose for?? I agree with the others, it goes to the charcoal canister. __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.



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