I just had a friend disconnect the Bowden cable on his engine as a test. He got very similar results to mine which would seem to point pretty strongly to a pressure control valve problem. Since it isn't the cable it must be something internal.

That being the case, is there a possible fix short of a total rebuild?

__________________
Current Stable

• 380SL (diesel)
• Corvette C5
• Manx
• Baja Bug
• F350 Powerstroke
• Auburn Boattail Speedster replica