Thanks Jward

Yeah it's weird it didn't do this when I first got it a couple of weeks ago. It pulled 2 cars plus the dummy engine with no issue. I had to pull the tracks up to continue work on my layout and then put them back in place and things haven't been the same since.

The wheels on the train cars seem to have no issues but the engine wheels spin in place until it gets up to max throttle when the cars are attached. With no cars attached the engine takes off with no issues.

Very strange

Yeah Jonathan after reading your post I think it must be the track. Great post! Will do a thorough track inspection. Yeah I opened her up and there is little to no room for weight. Thanks for the advice much appreciated everyone!

Yeah I noticed the farther it gets on the track away from the power source the slower it goes. My layout is all flat on a table. And when i throttle up with the engine car only it takes off but with cars attached it Seems like the wheels are spinning and revving up but even at full throttle it starts slow but doesn't pick up speed until it gets close to the power source. Just noticed that today.

Thanks for the advice Doneldon. I'm still new to model railroading and still have a lot to learn.Will try it. Thanks again!

I recently bought the Acela HO with DCC. When the powered engine is running by itself it runs at rated speed. But when I add the cars it crawls until I put my finger on it and push down(walking along side) or when I put a weight on top of it. This is the only way it will run at normal speed.

What I have done so far: Cleaned wheels and cleaned and check track connections.

Any advice?