Is the motor toast?

[jamesbalog]

Motor is an 81’ merc 200

Went fishing for the first time in about two months yesterday. Motor idled fine, Pisa’s a good stream coming out of the harbor. Ran about a mile and a half and she lost power and shut down. She was blowing enough smoke from under the cowl we had the fire extinguisher ready.

Fast forward to getting her home. I took the cowl off hooked up the hose and fired her up. After shutting her down I ran a compression test #1 cylinder had no compression at all. The other 5 were all right around 120.

Called my mechanic and left a message. He’s hard to get ahold of and will probably be waiting a few days for a call back.

Could this be Anything simple?