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03-02-2015, 09:09 PM
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#1 |
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Registered User
Join Date: Feb 2015
Location: fayette al
Posts: 20
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Fuel lines in cab????
I picked up a 71 lwb to steal some parts from. Anyways it has 2 lines coming off the fuel tank up the cab corner towards the roof? First one I've seen like this... can some one teach me something? I tried searching with no luck thanks!
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03-02-2015, 09:25 PM
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#2 |
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Registered User
Join Date: May 2011
Location: Northern Calif.
Posts: 3,652
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Re: Fuel lines in cab????
Looks to be Calif. stupid evap, God Save The Queen, OMG we need clean air, non-vented gas cap, emission mumbo jumbo!
 You should have a canister under the battery tray, with a line from the tank & one from the carb (for vaccum).
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03-02-2015, 09:25 PM
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#3 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Fuel lines in cab????
The top one goes up into the door frame it is a high loop to make sure no gas goes out(anti siphoning) only vapors go to the ece cannister vup by the erad core support as well as the tubing that goes to the carb// that is in fact the vent for the gas tank which most clowns block it off and cause vthemselves all sorts of mystery gremlins that they cant seem to grasp the importance of
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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03-02-2015, 09:52 PM
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#4 |
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Registered User
Join Date: Feb 2015
Location: fayette al
Posts: 20
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Re: Fuel lines in cab????
Thankyou. Learned something new
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03-02-2015, 10:19 PM
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#5 |
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Registered User
 
Join Date: May 2014
Location: PA
Posts: 1,417
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Re: Fuel lines in cab????
California has had all these crazy requirements for all these years now but still has the worst air quality and smog. Goes to show it doesn't work.
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1967 C10, LWB, 250, Powerglide, PS, PB, 3/4 STATIC DROP |
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03-02-2015, 11:20 PM
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#6 |
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Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Re: Fuel lines in cab????
Gas vent lines to Charcoal canister. They came on all 71 and 72 trucks mandated by the F/G back then.
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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03-02-2015, 11:41 PM
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#7 |
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Registered User
Join Date: Feb 2015
Location: fayette al
Posts: 20
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Re: Fuel lines in cab????
Thank you andy!
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03-03-2015, 11:02 AM
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#8 |
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Registered User
Join Date: Jul 2007
Location: Kansas City, KS
Posts: 46
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Re: Fuel lines in cab????
I just installed this system (evaporative emissions control, EEC) on my '70 to prevent fuel vapors from filling my garage every time I park it. This system was added in the early 1970's to reduce smog. This system will not hurt engine performance, if anything it will help it. You will not be wasting fuel to the atmosphere through evaporation since the vapors get sucked back into the engine from the charcoal canister. Unless you love the smell of fuel vapors, I would leave it. If you do decide to delete the system, make sure you get a vented fuel cap.
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1970 Chevy Custom C/10 Dark Bronze & White, 406 C.I. SBC, Edlebrock Cam, Intake, TH350 Trans with cooler, Headman Headers, 2.5" dual exaust with 28" glass packs, 3:73 gears, Original Oak bed, Pace Edwards Roll Top Toneau Cover, Resounds Bluetooth Radio, Chevy rally wheels, 265/75R15 General AT2's |
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03-03-2015, 12:30 PM
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#9 |
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Registered User
Join Date: Oct 2010
Location: Ocean Springs, MS
Posts: 1,746
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Re: Fuel lines in cab????
I deleted that loop in my truck, and that was a mistake. With a non vented gas cap, fuel purged itself through the vent line I had set up under the truck and ran out on the ground. This occurred every time after I filled up the tank. So I installed a vented cap, and with a full tank gas sloshed out every time I made a hard right turn. I put the loop back in with the original cap and no more problems.
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Gary 1971 Chevrolet C/10 1951 GMC 100 1977 GMC C15 1955 Chevrolet 3100 |
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03-14-2015, 02:32 PM
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#10 |
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Registered User
Join Date: May 2008
Location: Mesa, AZ
Posts: 281
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Re: Fuel lines in cab????
The "burp line" from the top of the tank to the filler was cracked and leaking on my truck. I replaced it and the two lines leading to the loop. Still have faint gas odor.
From the photo above, looks like the loop isn't made up of a single piece of steel, but consists of a rubber section at the actual loop. Is my observation accurate? If so, I may have to replace that section of hose too! --Mike
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I own 3 classic vehicles. 1971 LWB C10 Deluxe. 1974 VW Super Beetle. 1971 VW Fastback. The C10 and the Super Beetle run, the Fastback is just not there yet! Please visit my Super Beetle and Fastback profile on TheSamba. |
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03-14-2015, 04:46 PM
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#11 | |
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I built it
Join Date: Sep 2008
Location: Bakersfield ca
Posts: 744
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Re: Fuel lines in cab????
i yanked mine out during the blazer tank install and i THINK i remember it being a one piece steel line going up the cab
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'72 k10 lwb 454, th400, 205, d44ft, 12b rear, 4in skyjacker, 35x12.5-15 superswampers, 4.56, blazer tank. painless wiring harness '98 dodge 3500 12v 5sp 4x4. the truck that actually runs Quote:
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03-14-2015, 06:55 PM
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#12 |
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Registered User
Join Date: Apr 2012
Location: Stillwater, Oklahoma
Posts: 874
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Re: Fuel lines in cab????
So on the drivers side there is a tube going up the cab also. Am I correct in saying it ties into the loop on the passenger side?
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1971 C/10 SWB, 15x8 Rallys, 4.5" X 7" static drop, C-notched, 350/350, 3.73 Posi. .........A 383 and Gear Vendors are on my bucket list. 1972 GMC 4X4 K1500 Survivor - Sold No matter what problems life throws at you, your time on Earth can be incredibly fulfilling and rewarding.....if you just lower your expectations. -Phil Dunphy |
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03-15-2015, 08:38 PM
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#13 | |
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I built it
Join Date: Sep 2008
Location: Bakersfield ca
Posts: 744
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Re: Fuel lines in cab????
i dont remember one on the driver side. just the evap line between the neck and tank?
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'72 k10 lwb 454, th400, 205, d44ft, 12b rear, 4in skyjacker, 35x12.5-15 superswampers, 4.56, blazer tank. painless wiring harness '98 dodge 3500 12v 5sp 4x4. the truck that actually runs Quote:
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03-15-2015, 08:57 PM
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#14 |
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Active Member
Join Date: Dec 2003
Location: Waterbury, CT
Posts: 591
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Re: Fuel lines in cab????
The loop tube is one piece. What you are seeing in the diagram is a piece of woven cloth tube to stop any vibration from hitting the body.
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