Re: vacuum advance problem

Posted by harrybar On 2012/5/29 21:41:20

My whole distributor is supposed to rotate with vacuum, not just the plate. I can feel the vacuum at the line when it is disconnected, but I can't connect it to my vacuum gauge to measure the amount, because of of the fitting on the end of the pipe. I am convinced I need the advance unit.
With the vacuum line disconnected the car will idle at 400 rpm. and if I slowly rev up the engine I can see the timing advance, but because of the centrifugal advance. If I quickly rev up the engine there is a hesitation.
Rick at Hagen's Hiway Auto Parts says he rebuilds them to like new with modern diaphragm for $85.00
Jason Smith at Advanced Electrical Rebuilders says he has NOS units, but I didn't get the price yet.