GAS TANK LEAK
Thread Starter
Racer
Joined: Jan 2007
Posts: 391
Likes: 0
From: North Las Vegas
GAS TANK LEAK
I spoke of this before but have a question. My tank is leaking from the lower of the two venting outlets. When I address this, can I just plug the lower & upper connections? I am thinking that getting the fuel line back through the chassis for reinstallation may be difficult!
What do ya think? Thanks!
What do ya think? Thanks!
Instructor
Joined: Aug 2006
Posts: 174
Likes: 3
From: Glendale, CA
Not sure what you are asking. Are you thinking of just capping the two connections and not reinsalling the hose? If you want to be able to get more than about 5 gallons or so in the tank, the bottom connection needs to be vented. Otherwise, most of the tank will be filled with trapped air, due to the U-shape of the tank. Dave A. has a nice guide on doing the gas tank, where he describes a good procedure for connecting the new hose when you reinstall the tank. Look here:
http://members.rennlist.com/sharkski...0-FuelTank.htm
http://members.rennlist.com/sharkski...0-FuelTank.htm
Thread Starter
Racer
Joined: Jan 2007
Posts: 391
Likes: 0
From: North Las Vegas
Originally Posted by Optimator
Not sure what you are asking. Are you thinking of just capping the two connections and not reinsalling the hose? If you want to be able to get more than about 5 gallons or so in the tank, the bottom connection needs to be vented. Otherwise, most of the tank will be filled with trapped air, due to the U-shape of the tank. Dave A. has a nice guide on doing the gas tank, where he describes a good procedure for connecting the new hose when you reinstall the tank. Look here:
http://members.rennlist.com/sharkski...0-FuelTank.htm
http://members.rennlist.com/sharkski...0-FuelTank.htm
Rennlist Member
Joined: Jan 2004
Posts: 12,620
Likes: 8
From: Boulder Creek, CA
Optimator beat me to it. 
BTW, my cautions about breaking/scoring the nipples on the tank are worth repeating. I didn't score or break mine, but by the time I did this project myself I had heard enough horror stories about them breaking that I was able to avoid that pitfall. Also, I have removed fuel lines from plastic barbs on other vehicles in the past with a utility knife, only to find I had fubar'ed the barb.
BTW, my cautions about breaking/scoring the nipples on the tank are worth repeating. I didn't score or break mine, but by the time I did this project myself I had heard enough horror stories about them breaking that I was able to avoid that pitfall. Also, I have removed fuel lines from plastic barbs on other vehicles in the past with a utility knife, only to find I had fubar'ed the barb.
Last edited by SharkSkin; Mar 24, 2007 at 04:28 PM.
Instructor
Joined: Aug 2006
Posts: 174
Likes: 3
From: Glendale, CA
The advice about damaging the barb fittings definitely warrants extra emphasis. Those polyethylene barb fittings are VERY soft, and it is very easy to accidentally gouge or scratch them. I suggest cutting half way through the hose wall in several places to weaken it, and then carefully push the hose off with a pair of lock ring pliers inserted between the hose end and the side of the barb fitting.
When removing the tank I had to cut the large vent hose in two places. The only tool I had that could reach into the confined areas was a small hack saw (the type that is basically just a handle attached to one end of a standard hack saw blade). On my car someone had already had the tank out before, and they replaced the 15mm vent hose with heater hose. Don't use heater hose! It cannot withstand constant exposure to oil or gasoline. Furthermore, they had installed it with a kink, which made it non-functional.
When removing the tank I had to cut the large vent hose in two places. The only tool I had that could reach into the confined areas was a small hack saw (the type that is basically just a handle attached to one end of a standard hack saw blade). On my car someone had already had the tank out before, and they replaced the 15mm vent hose with heater hose. Don't use heater hose! It cannot withstand constant exposure to oil or gasoline. Furthermore, they had installed it with a kink, which made it non-functional.
Last edited by Optimator; Nov 6, 2019 at 04:18 PM.
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Rennlist Member
Rennlist Member
Joined: Nov 2003
Posts: 2,608
Likes: 12
From: Sydney AUS
Originally Posted by bigrob
I spoke of this before but have a question. My tank is leaking from the lower of the two venting outlets. When I address this, can I just plug the lower & upper connections? I am thinking that getting the fuel line back through the chassis for reinstallation may be difficult!
What do ya think? Thanks!
What do ya think? Thanks!
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