duster won,t start

[big block]

Engine starts and instantly dies.
different coil. new points new condenser. new coil. getting gas. compression around 150 on all cylinders. jumped past the resister no change. Was a pertronix electronic dist. did the same thing so =I put the points in to trouble shoot.
Any suggestions guys?

 

[Frank Mopar]

Bad vacuum leak. Was the engine apart?

 

[67Dart273]

See if you have power on coil+ with ignition on. Might be a problem in the "run" circuit. Engine fires on IGN2 "bypass" the brown wire, then runs when key goes back to run position on "IGN1" the run circuit