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Old 07-04-2019, 12:21 PM   #87
ShortHaul
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Join Date: Apr 2018
Location: Penngrove, CA
Posts: 697
Re: "Sweet Pea" 1975 Cheyenne 20

Anyway... On to less fun but more important tasks... Fuel issues.

I have always had trouble filling up my tanks. Here in CA the fuel nozzles have these very annoying "Vapor collar" thingys that completely block off the filler neck to prevent fuel vapor from escaping. In doing so, they prohibit the tank vent from operating properly, which leads to fuel puking out of the filler neck and onto the ground. That's a pain in the ass all in itself, but recently I noticed the filler tube hose on my aux tank was leaking profusely as well. That led me to crawl under there and inspect the system. Turns out all the rubber fuel lines are in pretty shoddy shape.

I dropped the aux side tank yesterday and am in the process of cleaning it up, replacing the lines, and deciding whether or not i need to replace the sender.

If anyone can help chime in on this question, please do.

After pulling the tank, I found this setup at the top:

Untitled by awesome_adawson, on Flickr

Untitled by awesome_adawson, on Flickr

What exactly am I looking at here? And is it safe/legit/factory? I'm assuming that one is a fuel output line, and the other a breather, but what sort of breather contraption is that? and is it safe? Also, if i plan on swapping the sender, is it wise to recreate this exact setup? Please let me know if you have any experience in the fuel systems in these trucks... Thanks!
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"Sweet Pea" 1975 Cheyenne 20
http://67-72chevytrucks.com/vboard/s...00#post8477900
"Bourbon" 1975 Suburban ScottsdaleSOLD
https://67-72chevytrucks.com/vboard/...49#post8769049
”Otis” 1970 C10 SWB -SOLD
http://67-72chevytrucks.com/vboard/s...d.php?t=762766
”Chebby” 1962 Impala LS/TKO-500
http://www.pro-touring.com/threads/1...2-Impala-Build
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