06-08-2011, 09:26 AM

71ModelJ

Senior Member

Join Date: Nov 2010

Location: Northwood N.H.

Posts: 147

71 Grand Prix vacuum advance

Put my timing chain in the other day and disconnected and plugged the vacuum advance. Set it for 12 BTDC and checked total timing. Got 22 total. Question is the vacuum line from distributor goes to a 3 port electric over vacuum solenoid. Is this a decel valve. How do I check it for proper operation? Also I will pull the cap and rotor tonight and check the advance weights and springs. After all the engine was seized after not being started for 30 years. Any help would be great.

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