Petrol from carbs

[Disorderlypunk]

sounds like an o-ring between the carb on the metal joiner has either got pinched or perished, if you replaced these then make sure you use a nitrile NBR o-ring as they are less likely to have a reaction


a handy chemical resistance chart i have in my favorites is
https://mscrm-dupont.secure.force.com/CRG_TlargiGuide