Ken Madsen wrote in part
 
>Adjusting the timing as per spec. = the engine ran like a dog - no power or
>would not run at all
 
Ken
The manifold vacuum could be low. = Low intake manifold vacuum happens when you have a intake manifold = leaking orcylinder with little or no compression. I have also seen when the = intake valves dont close due to air in the lifters
 
Bob