Unknown Engine Noise

Ok the time for me to start my trek across country to Cali is drawing nigh and now I'm seriously getting worried that the clicking noise from the engine is gonna cause a problem 1000 miles into my trip and I'll be stranded on the road somewhere around BF Egypt. When I accelerate the clicking gets faster so I'm thinking a lifter may be stuck. Car is running pretty rich so it's a possiblity the timing maybe be advanced too far or something so maybe it's causing a knock. If it is in fact a lifter do they make anything that can be added to the engine oil to rid it or do I need to get the lifters replaced? Any help would be appreciated guys.

Thanks in advance.

Jarrod

Thanks for the idea man. Guess I should start simple and before i go rip-roaring into the engine. I'll check the spark first, see what kind of additives I can add to my engine oil, check my timing, and then think about the lifters. Hopefully it's nothing internal because I don't have but a week left and I'd hate to have the car torn apart and me not have the problem solved still and be delayed for my trip. Once again thanks

Jarrod