[Mikemuir]

ok I will hold off on installing powervalves.
What else could be causing the low vacuum?
I have had the motor compression tested and think they were all pretty much around the 150 mark.
I have removed vacuum lines on the carb and installed caps but still only running 9.0 on vacuum

**** weather today so haven't been able to take it out to test the new changes.
1/cleaned plugs
2/added 3/4 to secondary throttle plates
3/changed accelerator pump cam to position 1

once again noticed that if I remove vacuum gauge and leave port open.the motor seems to be a lot crisper(only tested while parked up for a short period).
I didn't want to hurt the motor by running lean?

Let me know if there is any thing else I can check why it is parked up.

Cheers