OK, just did a little quick vacuum test on the diaphragm valve on the distributor. I just a transfer pump with a small rubber nozzle on it to fit in the valves port. The timing plate moved with a couple of pumps. Question is, what sort of maximum vacuum reading should I get? I'll have to figure out a way to attach a gauge to the transfer pump to get a reading and to see if the reading is holding. The rubber on that diaphragm could be a bit dry rotted. Gotta look at it a bit closer. I'm thinking that just a pin hole leak could effect its performance. Any thoughts?
