Troubleshooting an overheating engine

After steam started coming out of the exhaust, followed by a high temp engine alarm, It’s time to start troubleshooting the raw water side of a Yanmar 2GM20F engine. I take a look at the raw water strainter, raw water pump, heat exhanger, antisiphon valve and the exhaust mixing elbow. I don’t think the problem was just one thing, but a few things compounded together. One of the splines was missing on the impellor, another was cracked, and the heat exchanger was heavily scaled and partially blocked.

Took a time out to enjoy the boating life… Staying at dock

sunset

The day started out cloudless, but we knew better since were in central Florida and in the  beginning of a summer time weather pattern.  We decided to stat at dock instead of racing in after an afternoon a sailing trying to outrun the storms.  It was windy and hot, but a few very cold boat drinks whipped up by Cap’n Chris made it all better.  After checking the weather the next morning, we decided to go kayaking for a few hours and head home.  Glad we did, it ended up getting pretty nasty the next night.

RumChrisgordon

 

Ohh’ no… “The shitters full!” Another awesome sail and picking up an overnight mooring in Vinoy Basin

Ohh’ no… “The shitters full!” Another awesome sail and picking up an overnight mooring in Vinoy Basin

Sailing after a quick pump out. There was no wind to be found… anywhere, then all of a sudden had 12-15kts with all the sheets out. It was an awesome sail up to 7kts for about an hour after that, then the winds started to die back down. Ended up dropping the sail and motoring back in and grabbing a mooring in the St. Pete. North (Vinoy) basin and having an awesome calm anchor for the night. Insert boat drinks! All was great until the, I won’t mention the name, boat moored next to us decided to do a stealth pumpout at midnight. The smell was so bad it woke me up. Poor aminals!