Re: Need help - Vacuum loss and can't resolve
Aside from the common stuff or maybe a crank in the plastic manifold?
HAve you tried spraying the stuff underhood with carb cleaner, then watching your fuel trims in HPT to see if the car is making up for it.
This is a stupid one....got a loose valve cover gasket?
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING 
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