when I release my foot from the accelerator, and then pump it again as econd time, the power is all there and the car will really accelearte up the mountains like it did when it was very young...

July 4 weekend found me with only one car with AC--that was my 85 300D with an engine that clanks and clunks and which once I ran down to 1 quart of oil because of a plugged breather hose. Miraculously, it doesnt consume a drop of oil now, though it did for a month after the breather tube mishap...
So I took my 300D to the Shenandoah Valley. i had long given up the engine for dead and was waiting for time to identify its fate.
What I found was that the Car has plenty of power to climb the mountains, but sometimes it can barely go 5 mph. It is very sluggish when cold and also at other times, like going fresh up another 35 degree incline from Stop. It will literally crawl. But when I release my foot from the accelerator, and then pump it gain, the power is all there and the car will really Move like it did when it was very young..The other thing is the car is nisy as all Hell and has compression thats okay. Sometimes I think is all it needs is to have the cylinder head redone...but the fuel/power problem has me curious..