How to check Fuel lines and tank ?

[Shawninvancouver]

I have a 71 240 thats been siting 5 - 7 year.  We want to check the tank and fuel lines, what is the best way to do this?

1. is there a drain plug? 

2. can we clean out tank?

3. can we blow out or clean out lines?

there are no visible holes -   any ideas would be great...

[Zed Head]

https://www.atlanticz.ca/zclub/techtips/fuel/gastank/index.htm

[siteunseen]

I had some pitted hardlines under the battery tray once that I replaced with rubber hose. Not original but worked out great. Have  you determined what carbs you have? Are they 3 screws or 4. Here's a good identification website.

ztherapy.com

You need to determine if the nozzles move up and down freely. The connection hoses from the carbs to the float chambers are critical for proper operation. Many times have people used stiff fuel hose for this, no good, they bind the movement.

 

 

Edited March 15, 2021 by siteunseen

[Shawninvancouver]

I have seen mixed reviews of a drain screw on the bottom and there is NOT one shown on tank scematic... is there a drain screw on the 71 240 tank??

[SteveJ]

Did you look closely when you took that photo of your gas tank?

I don't know where you saw someone say there isn't a drain plug.

[Shawninvancouver]

think that tank will hold gas? and get it to the engine?

[Patcon]

I would pull that tank and check it before I put fuel in it! 50/50 it holds fuel, maybe less

[heyitsrama]

You can blow out the hardlines from the front to the back, i cut a hole in a Coke bottle (cant use Pepsi, it wont work) then put one end of a rubber hose into the hole, and the other on the tank side of the hardline. From the engine bay I put some alcohol into the hardline, then blow it out with compressed air back to the soda bottle.

If you pull the tank you might wanna replace all the fuel hoses. I'm surprised no one has a concrete thread of the size/length of hose to address the rear evap system. I was talking about it to another Z owner, and had to refer to them to multiple threads with partial information.... Maybe someone has the information or a link.

 

Edited March 15, 2021 by heyitsrama

[w3wilkes]

WoodWorkerB has all the hose sizes he used on his 240z tank refresh.

240Z – Fuel Tank | WoodWorkerB