Hm.. What could be wrong with my engine?

Check your track, wheels and pick-up rollers for dirt.

I would say Dennis is right on. Does the unit do it in the same ares of the layout all the time? 

We have a carpet layout, but regardless of where it's running, the problem still continues. It doesn't happen in neutral, which is strange. We clean the tracks after every time we use them with Mth Track Cleaner.

Thanks,

Greg

Does this engine have a battery in it?  If so, replace it and see if that helps.

.....

Dennis

I recently installed a bcr about a month ago. I am thinking that the problem is more based upon the internals of the engine, but I am not sure.

Thanks,

Greg

The smoke draw is right on, that's not your primary issue.

I'd replace the BCR with a standard NiMh battery and see if that changes things.

I think that your speaker is failing. This is a common problem and often the plating on the speaker magnet is flaking off and causing the speaker sound to distort and eventually fail.

Eric Hofberg

TCA, LCCA, MTH Tech

I would also check the volume pot, we have had several issues where this problem has manifested from this volume control. We have had some with bad audio amps also. Best thing is to check the speaker first as Chris has mentioned. Also you need to check for a pinched wire from the board to the speaker.

Hey all,

Thank you for the help! I will definitely check the speaker and look for wires that are pinched. I will keep you all updated on what i find. I really appreciate the help.

Happy Labor Day

Greg