No power under accelartion

[Barry]

1. Started reving really high in idle once been driving for a while to the point of having to stop, seemed to get better on its own accord but just comes and goes now.
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That, to me indicates a vacuum leak. 
Leak is closed when cold but quickly opens making a very lean mixture

What motor do you have?
Type 1 or 4

Lots of places they can leak but different between the 2 motors. 

Need more info regarding the vacuum pipe off dizzy. 
You won’t accelerate with that off