Replace 1970 expansion tank?

RobFrost · Post by **RobFrost** » Sun Jul 10, 2022 6:57 pm

My under-nearside-wing expansion tank is split. Maybe I'm just cynical but I don't imagine this is doing much - there's air space in the tank and another vessel under the dash. What's the accepted wisdom on these - replace or just connect the two hoses together?

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70sThrowback · Post by **70sThrowback** » Mon Jul 11, 2022 9:45 am

I know when my hose had cracked (didn't know at the time), when I brimmed the tank i got petrol leaking out by the front wheel. So it definitely does something, not sure if maybe you can put a release valve in?

deano · Post by **deano** » Mon Jul 11, 2022 9:46 am

Its not under any kind of stress, so I think you could clean it up and hot glue the split. I think the wisdom is, fit one if you smell petrol fumes in the garage. Not 100% sure, but I think the system should include a charcoal canister to work as intended...

impmad2000 · Post by **impmad2000** » Mon Jul 11, 2022 12:32 pm

I did just join the pipes together, not thinking about the routing and got a similar fuel leak problem when filling the tank. I have since added a high point in the link pipe, higher than the fill neck and now no problem. I did get rid of the seemingly empty box.

RobFrost · Post by **RobFrost** » Tue Jul 12, 2022 5:13 am

Ok thanks. Maybe I fix or replace the box then. Another job to do...

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Replace 1970 expansion tank?

Replace 1970 expansion tank?

Re: Replace 1970 expansion tank?

Re: Replace 1970 expansion tank?

Re: Replace 1970 expansion tank?

Re: Replace 1970 expansion tank?