If my trucks sits a couple days or more the bowl in the carb drains. I rebuilt the carb last year and I don't remember it doing it before that. Any ideas to why it does it? One day I want to get a Weber before anyone suggests that but it will probably be a while.

 

had this happen to my old truck(had a webber), anyhow one of the fuel lines was cracked so it would drain. I would have to prime it to get it running again. Also there was never any noticeable leak.

 

I will check into this.