broker-len Posted May 24, 2016 Share Posted May 24, 2016 have a 32 PA just rebuilt the motor pistons, rings, valves, guides, head shaved, all new gaskets, took time setting the tappet clearance. ------------------at idle I get 15 pounds of vacuum----when taken from windshield wiper port-----and as all got 4 cylinders it bounces around a bit have not check compression ------------------any ideas ?? Link to comment Share on other sites More sharing options...
Guest DodgeKCL Posted May 26, 2016 Share Posted May 26, 2016 Valves, most likely, Len. 15 lbs. vacuum is the best you,ll get. I've been told by the 'old guys' that the bouncing around of the needle was caused by sticking valves. Did you put prestart guide lube on the valve stems and guides as you reassembled the engine? (You should have also put prestart lube on the connecting rod bearings and mains.) It may get better with time and engine oil getting around the engine but you may just always have it. It is annoying but not dangerous. Link to comment Share on other sites More sharing options...
broker-len Posted May 27, 2016 Author Share Posted May 27, 2016 I got it to operating temp and use the vacuum gage two time it running better and smoother 16 to 17 LBs and shorted out each plug to see it they all are firing thanks for your help Link to comment Share on other sites More sharing options...
JACK M Posted May 27, 2016 Share Posted May 27, 2016 not lbs, Its inches of mercury. But we all know what you are talking about. I also use vacuum to set timing sometimes, works well. Link to comment Share on other sites More sharing options...
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