<VV> low vacuum

[Padgett]

>about 12 to 14 Hg. in neutral gets worse in drive 8 to
>10 Hg. Also the readings are very erratic the needle on my handheld gage
>vibrates and jumps. All the engines I have checked have aftermarket lifters,

To the best of my knowledge, mine is a stock 66 110 hp PG  and does the 
same thing. Have planned to run a leakdown test once the weather cools off 
or I can't sleep at 4 am. Also have a set of fresh carbs to try.

Padgett