Originally Posted by galaxiecruiser
Need help with this one. 62 Ford 352. Starts and runs fine for about 20 seconds then runs really bad and feels like timing is out. Disconnected and plugged vacuum advance. After warming up it smooths out on its own and the engine runs fine. Timing is dead on and running smooth when warm. When I plug vacuum line back in it kills the engine and wont start with the line plugged in. Any suggestions?
Test the diaphragm unit, it probably is blown and leaks air when the engine pulls vacuum on it.