Been working on a 73 Hallet 21ft DC. Went out for first run this weekend and when the boat hit 3,000 and 10lbs it just shut off. I believe this to be a problem with the pressure restriction parts in the inter cooler Sorry I don't know what they are called. Anyway, there are two 1/4 in ports on the side of the inter cooler which I'm guessing control this. however, I don't know where to hook them up. I hooked them up to manifold vc/ pressure (no luck) then to carb vac on metering block (no luck). Any help would be great. I have attached pics in an effort to make clear what I have.
Thanks a bunch,