Oil leak, BMC 1500 Diesel

[Mitch1965]

Good afternoon. I had the heat exchanger changed on one of my BMC 1500 diesel engines last week. Took it out for a sea trial and lost all oil pressure on the same engine. When back in the marina I checked the oil and hardly any in the sump. I'd lost it in the bilge so obviously a leak. Where would be a good place to start looking. Thanks in advance for any assistance.

 

[James jameson]

Clean the engine with de greaser and the bilge, run the engine and look for leaks