One final favourite of Azimuth is the electrical solenoid on the fuel line from the tank, you will see these close to the big fuel shut of valve on the tank, these are energised when you turn the battery master on but the wires can get knocked off, there is a manual override knob on the solenoid, work this a few times just in case there is any crud in there, they do get warm when energised.

If when you prime with the pump you get drips of diesel then the primer pump seals have gone, if the selector is not fully in the run position this can pull air in, however when that happens the engine is a pain to start, I don’t think this is your issue The fuel primer can be tricky, you have to be careful the little selector knob is in the run position otherwise it can limit fuel flow, sometimes the knob slips and you loose position. Not exactly the same engine, but yours were derived from the 3116, sort of.Ĭlick to expand.if you have a little button on the throttles you have to press to make that throttle control then it’s most likely Mathers microcommanders, however malfunction of this system will not stop an engine, the belts in early ones fail and slip preventing you starting occasionally, fiddly but easy to replace the belts, defiantly will not shut down a running engine The only drawback being that I had to go down the e/r and push its red button manually to turn the engine off, once done with it.īut what is even more weird is that the following day I tried reconnecting the solenoid, and the defect disappeared - and never surfaced again to these days. I disconnected the solenoid, and the engine started and ran perfectly. So, while it took some time to understand that the solenoid was the culprit (while cruising the Croatian coast, in a hot engine room and with my Cat mechanic on the phone!), the solution was dead easy. What is really weird is that it's a solenoid that has to be energized to shut down, not the other way round. Upon every following attempt to turn the engine on, it appeared to start normally, but it turned off immediately, because after a split second the solenoid turned it off again.

So, don't take this as a suggestion that your problem is likely to be the same, also because I'm not sure if the 3126 and the 3116 share the same component.īut FWIW in my case, out of the blue while cruising, the shutdown solenoid decided on its own to do what it's there for, i.e. I did experience an unwanted engine shut down, only once during 17 years of ownership overall. Not exactly the same engine, but yours were derived from the 3116, sort of. Click to expand.I used to own a 3116 powered boat.

Cat 3126e specs