i had it running good but now all of a sudden its bogging out on low acceleration. i adjusted the timing to 8 deg. replaced the cap, rotor, wires, plugs are pretty much new, checked the vacuum and its sitting around 17-18 in the normal range on that gauge. re-checked all the vacuum lines and they all seem good, snugged down the carb bolts which were all tight so i didnt even move them, checked all the plugs too make sure they're tight and still gapped right and they were, now im kinda stumped as to what to check next. i put champion plugs that were gapped to .045 but i always remember gapping my acdelcos to .035 so in a last ditch effort im gonna go against what the package said to gap them to and shrink it down to .035 and see if it makes any difference. any idea how i could check the feul pressure with that gauge? it only has a piece of vacuum line with a cone shaped plastic fitting on the end. i gave it a few pumps and watched the spray in the carb and it seemed pretty good so im gonna assume the accel. pump is working good. there is a black vaccum tree thats screwed into the front of the manifold and pretty much everything like the vacuum advance, EGR valve, etc. is coming off of it, but the black plastic part is a little loose in the metal part that its connected to, could that possible be leaking? it only has the 1 2-wire plugs on the carb and has VA so its not a CCC.