symptoms of sucked valves. (need some help)

[mypoorv-dub]

[/b] HELLO MY NAME IS JOSH I AM FROM CHINO VALLEY AZ AND HAVE RECENTLY PURCHASED A BEAUTIFUL 1966 V-DUB BUG WITH A 1776CC ENGINE WHICH DOES REALLY WELL. A COUPLE OF WEEKENDS AGO WE WERE DRIVING DOWN THE HIGHWAY AND ALL WAS WELL UNTILL MY BUG JUST BOGGED OUT AND CAME TO A SLOW STOP AND NO MATTER HOW MUCH I PRESSED ON THE GAS THE BUG JUST WOULDNT GO. AND THE STRANGE THING IS I WAS GETTING FUEL AND SPARK BUT I PUT MY HAND OVER THE AIR CLEANER WHILE MY GIRLFRIEND TRIED TURNING IT OVER AND IT WASNT REALLY SUCKING ANY AIR. I NEED SOME INPUT. DOES THIS SOUND LIKE A VALVE PROBLEM MAYBE?