not starting when hot out

[samwise]

I am sure this is on here somewhere, but I cannot find exactly what I need. I am also still a newb and not great a mechanics.
Ive got a stock 78 w/desmogged 2f, Jim C carb, new gear reduc starter.
When its hot out, 90-100+*, the engine runs great when driving around, does not over heat,maybe a little warm still at first hash on gauge, but when I shut it down and go to start it again, like 5 -25 minutes later, it takes forever to start. Just turns over and over, I usually have to mash the pedal down to open it up to start.

Is this a vapor lock issue? I dont have a vented gas cap, could it be that easy?
If it is vapor lock, what does that mean and I what do I do with it?

Thanks!

Jon

 

[John Smith]

Do you still have the carb fan on the truck?

 

[Pin_Head]

Hot restarts often require a little different starting procedure:
Hold the pedal down to the floor and do not pump it. Start. Let up on the pedal when it starts.

 

[samwise]

I do have the carb fan, not working though, I checked the fuse under dash and its good, thats as far as my electrical skills go! and I do the hold the pedal down thing, still takes a while though.
Would the carb fan be the key??
Thanks for the help!!

Jon

 

[MJM]

Carb in the key

The carb fan is the key search "Vapor Lock" and then carb cooling fan there is way to ground it so it will run for a few min. after shutdown.