[Roadsters] Car won't start after a minute running update

[David Boerst]

Well well well,

Here's a new one for me. I replaced all the distributor parts, nope not that. Checked carbs seemed fine. Took off air cleaner and with the car running tried moving each choke/power piston. One was stuck. Figured it was from old gas. Cleaned it and it moved freely. Fired the engine and it stuck. Then decided to swap choke/power pistons and the other carb the piston stuck. I examined each piston and they ARE different. I looked at my 1969 and 1970 1600 and one of the 1966 pistons were like the 69/70. There is a hole in the bottom of the piston but in different spots. For an experiment I put a small piece of gas resistant tubing where the is a actuator for the piston to hold it up so it(piston) does stick from the vacuum. starts instantly every time. Hows that for a weird one. Anyone have or know where I could get the correct piston? 1966 1600 engine with 610A carbs. Thanks