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Old 18-09-19, 12:18 AM
Geoff Dowdle Geoff Dowdle is offline
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Join Date: Jul 2008
Location: Sydney, Australia
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peterg
I would try to get your car back to original design if possible .

Replace any rubber tubes with modern rubber/neoprene that is not effected by fuel or oil .

Fix any holes in the fuel cap well and make sure any fuel that comes into the well drains on to the road.

Remove the one way valve it should not be necessary if every thing else is in order.

Dont fill the tank as full as you have been doing.

Hopefully one or a combination of these will fix the problem.

Geoff
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