1966 250SE Stalling Issue
I recently purchased a 1966 250SE with the M129 engine.
A buddy of mine is a mechanic and has been helping me bring the girl back to it's original state mechanically.
So far we have replaced:
Spark plugs with NKG plugs
Spark plug wires
Distro cap and rotor
Performed an oil change
When the car is cold it runs and idles like a champ, however once the car warms up it sputters and stalls out.
I took the car for a drive and after about 10-15mins of driving I lost all power from the engine, she stalled and didn't want to turn over.
Any ideas what could be causing the problem?
Areas to look into next and possibly replace/clean?
Any tips would be appreciated