[C320-list] Engine stall only under load

[Warren Updike]

The exhaust elbow may well be the problem. For some reason, the Yanmars seem to have more issues than the Perkins. The Perkins elbow is a cast iron piece. We have over 2,000 hours on our M30 and the last time I looked there was very little carbon buildup. 

I remind everyone that diesel engines like to be pushed. The most efficient rpm is about 80% of the rated "max. rpm" (check mfgrs specs.) If at all possible, cruise at higher rpm rather than lower. Always give the engine time to come to full operating temp before shutting down. If moored or anchored run engine in reverse when charging batteries, as an unloaded engine pushes a lot of unburned fuel and carbon at lower temps and tends to accumulate inside.

Donald, please do let us know what you find. The info can help is all.

Warren & Pattie Updike
1994 C320 #62 "Warr De Mar"

-----Original Message-----
From: Donald Poole [mailto:dpoole15 at gmail.com] 
Sent: Monday, January 20, 2014 7:36 PM
To: c320-list at lists.catalina320.com
Subject: [C320-list] Engine stall only under load

Perkins M30. I can idle for hours regardless of RPM (1000, 1500, 2000,
2500) but she stalls when I am underway. I have changed both primary and secondary fuel filters and the fuel lift pump. still stalls. Anyone have a suggestion of what I can try next. I'm thinking there may be a fuel tank problem ( vent or pick up line ) That's my next stop. If that's it I'll post the result. Appreciate any guidance or even just ideas.