(Edited) Stalled Honda BF30 Outboard Four Strokes in High Seas

[jakeasher]

To all with potential insights/solutions-<br /><br />I work with a group of divers/scientists in the on a marine debris mapping/recovery project. We use inflatable 18' AVON hulls and two Honda BF30A engines (30 hp, 4-stroke OHC/carborated in-line 3 cylinders, diaphragm fuel pumps) per hull. <br /><br />The system of running the boats empty/full (i.e. filled with recovered fishing gear upto 3/4 ton/boat) has worked well...however, there have been a couple of cases when the engines have stalled out in seas greater than five feet. Both engines typically stall at the same time, usually after a boat transits over the top of a wave (no problem), over a peak and then down the backside (stalls with the bow oriented towards troughs between waves, stern oriented towards the peak). <br /><br />These incidents are rare, but a potential problem in situations (e.g. running a pass) when stalled engines could result in a flipped boat (or worse). We've tried mounting the engines @ different spots on the transom but that has not alleviated the problem. Any and all suggestions would be greatly appreciated.<br /><br />Cheers,<br /><br />Jay

 

[DJ]

Re: (Edited) Stalled Honda BF30 Outboard Four Strokes in High Seas

jma,<br /><br />Please provide some further detail.<br /><br />As an example, what is the attitude of the engines when the stall? (ie, out of water, tilted up, bow up, bow down, etc.)<br /><br />Do both engines stall at the same time?<br /><br />What type of fuel system?

 

[Skinnywater]

Re: (Edited) Stalled Honda BF30 Outboard Four Strokes in High Seas

I'll take a stab at it. <br />Is it possible upward/downward/pitching motion under those partcular conditions is causeing the fuel to slosh out of the carb bowls? Causeing the motors to flood out?<br />What is the estimated RPM when this occured?<br />How was the restarts immediately after it stalled?<br /><br />Was it possible something interfered with the manuel choke lever? Something on the transom pulling the lever out temporarily, essentially chokeing it out?