Thanks for the good help and directions of where to start, To answer your questions.

Motor = 5.0L Fuel Injected V8 Vin:117.963
It really has no cold start problem, Instant start, First Time, Every Time. No power after start, Boggs with accelerator being depressed.

I do not smell fuel or gas smells. I don't have a variance between cold and hot idle. About 750 RPM. It is surprising it hasn't a higher idle speed when first started. But I cannot remember it ever having an increased idle when cold. This may be a clue as you have a fast idle position on most cars when first started. Our ambient temps here are pretty reasonable we range from overnight lows in the 40's at night to no higher than mid 70's during the day on average.

The power loss is on hills all the time, now this just started about a week ago. Prior to that I only had the cold power loss. Once warmed up to over 80C it ran fine until then.

I have no engine or other warning lights or gage irregularities. With the possible exception that the economy gage drops all the way into the red totally when I try to accelerate.

I am going to give it the TLC it needs tomorrow. I will check every hose again, burnish and coat every terminal with oxguard and check the flow out of the tail pipe. I really should look under at the Catalytic converter when it is warmed up as well. Just need to do the methodical step by step of good maintenance.

I found a good tread about using a vacuum gage to check the cat. If I can find that ol vac gage I will run that test as well. I have to go down to our building in town an get my other test equipment. Now that I own another MB I guess I will need it close again. Not to say there are more problems, MB owners are just more attentive to the little things, Ah, I remember those days well. De’ja’vu all over again.

I also ordered some CD manuals today! I hope they are the good ones!

Thanks again!!