[Verdoro 68]

I have a similar issue I've been trying to get sorted. Mine takes a day or so before I have to give it a few cranks to get fuel to the carb. Some folks say it's the fuel evaporating, but I didn't have this problem prior to my rebuild (when the carb was also rebuilt, too).

I was debating installing an aftermarket check valve, but based on old threads I read most mechanical fuel pumps already have anti-drainback valves by design. The fuel pump in my car is at least 10-12 years old so I'm going to try two things - a fuel filter with an anti drainback valve and a fresh fuel pump.