I have a 1973 Evinrude Triumph 65 HP 3 cylinder, w/ selectric shift. The problem I have is that after about 20 to 30 minutes of flat out running the motor just quits. If we remove the cover and let it sit for 15 minutes the motor will re-start and run, but not on all cylinders. If you let it sit for 3 to 4 hours it will start and run for another 20 to 30 mins before it all happens again. I have been told to look at the power pack, but for some reason I don't think that is the real problem. The people I talked to said that this year is one of the early runs at electronic ignition and it is prone to intermittent failure whn it warms up. Could it be the coils breaking down? The bottom coil has a couple of cracks in it, and the top one has a small crack, near where the plug wire comes out of the coil.<br />Also another thing is that when the plugs are pulled they are all gas covered, like the engine is running rich. Could this be caused by low voltage spark causing incomplete burning of the fuel? The engine will run fine on the flush cups, and the spark is strong. The carbs were recently rebuilt about a year ago. The engine runs fine at high speed and even at low rpms, but when you take off from a 2-3 min idle it misses for a few second and then jumps back to life. I like to use the boat to tow skiers and it's really hard for them to get up on the skis whn this happens, not to mention the shut down problem. It's been a mystery and no shop has had a definite answer and it has to be a under load to duplicate the problem, and none of the shops will take the boat out for a trial run to see what's up. I hate spening the cash on parts just to find out I was wrong on the diagnosis, these particular ones are big time money, other wise it wouldn't be a problem on a $10 part, but the power pack is like $200+. Now that I have confused you all, here is the numbers off of the plug on top of the motor.<br /><br />65273S<br />J09758