Usually around 700rpm.
Could be many things. Has the car been in storage or sat for awhile?
No just had motor rebuilt
New gas? I suspect water in the fuel. If that is OK, was the carburetor rebuilt as well, tuned to the motor? Was the car running fine before, or did you just get it running?
Just got ruining but isn't staying running, not sure on rebuild I just bought car
Carb might just need to be set up and add some drygas to the tank. Check for vacuum leaks.
Thank you, so much more helpful than the 914 club
Tom you are my Porsche guru
Tom is right, the carbs need to rebuilt along with the engine. Don't cheap out, the engine will run like a dream on rebuilt and synchronized carbs. Get rid of all traces of the old gas, it will quickly plug the jets on the carbs and you'll be back to where you started. Also change the fuel filter.
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