[Tinker]

Is the vacuum fluttery or just low. Rings. Flutter is maybe stuck valves.


Not to say a vacuum leak or other can give the same low readings.


Run the heck out of the motor, it's not going to hurt. Fatheads need to be run to really diagnose, problems work them self out. Your not going to harm it if it has oil pressure 99.9 times out of 100. If after something is problematic, stick a vacuum or compression gauge to it. Fuel would be next, then timing/spark. Back fire is too much, pre-fire is to little... granted timing is set right.




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