stepping on the throttle resulting in a bog means the accelerator pump is either bad or needs to "come on" quicker, esp if it happens at lower rpms more than higher. If you have power brakes, the engine bog when stepping on the brakes could be a vac leak within the power booster (your brakes wouldn't have much "power assist"). Otherwise (or also),your carb float level could be low. In fact, the acceleration bog could also be caused by low float level - not allowing the accelerator pump enuf gas to function properly. Last, do a simple but thorough vacuum leak check - all your vac hoses (check for breaks, hard ends that don't fit tight on the nipples, etc)
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