I have a 1970 Beetle. Starting problem?

Testing and adjusting the choke is easy.  When the engine is cold and off, loosen the three screws that hold the choke in place (they're on the passenger side of the carbuerator) and rotate the choke body one way or the other while holding the throttle open until you have the contact screw over the 2nd detent (from the bottom).  Then retighten the screws and start the car.  Let it run for a few minutes, then check to see if the contact screw is now at the very bottom.  If so, your choke works fine.  If not, replace the choke's bimetal coil.  NOTE:  The above setting gets good results for warm temperatures (above 40 degrees).  If outdoor temperature stays below freezing you may need to re-adjust to a higher detent.

Hi there, it might be your choke. This was happening to mine, it kept sticking and flooded the engine if I stopped before the engine had properly warmed up. Had it replaced, problems gone.

Hope this helps.
Sally