Emergency Start simply parallels your battery banks together, and it only does so while the button is depressed.

The purpose is to boost a low battery or battery bank by temporarily linking it to the other batteries.

It really doesn't have anything to do with the engines themselves. From what you described, you may have weak batteries and/or a poor connection in the stbd bank. (or something drained them)

 

Thanks ill check it out today......:smt001

 

Think of your car with one engine, one battery. Your battery is dead so you take jumper cables and bring another car over and with the jumper cables you connect the two batteries together then start your car. Your car does not just start; you still need to turn your key to start your car.

Now in your boat you have two engines and two separate battery systems with at least one battery on each system.

The emergency button is like a built in jumper cable.

When you press that button a relay connects the battery banks so the one with the engine and alternator running is connected to the dead battery bank. Just like with your car you still need to start the engine. Technically it’s a bit more complex than this, but from a understanding point of view the above will do.

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________________very thank you....:thumbsup:

 

Something similar happened to us yesterday..

Starboard engine fired up, port side nothing. Thought the battery could be low, so tried the emergency & port simultaneously - nada.

Scratched head for a couple minutes, and my wife reached over and 'adjusted' the port transmission shifter.. viola, fired right up.

 

Yes, that is always the other place to look if a no start issue. I was 130 miles from my marina at a distant marina with no service and had that happen where the shifter was barely moved - and it wouldn't start - kinda made me panic at first. But it doesn't take much.

 

Emergency start button, Yep its nice to have on a boat with twins. :thumbsup:

 

"Scratched head for a couple minutes, and my wife reached over and 'adjusted' the port transmission shifter.. viola, fired right up."


So...
How long is it gonna be before you stop hearing about that?

I'm sure she'll bring it up next time all of your friends are aboard...

 

I'm lucky that she's not one to hold it over my head.. we're both boating noobs. :smt100

Yes, that is always the other place to look if a no start issue. I was 130 miles from my marina at a distant marina with no service and had that happen where the shifter was barely moved - and it wouldn't start - kinda made me panic at first. But it doesn't take much.

Yeah, barely moved... didn't know they were so sensitive.. easy lesson learned!

 

So your wife will be holding your "man card" for awhile now eh? LOL. Sorry, I had to do that. Don't feel bad, we've all done things like that from time to time. My wife would NEVER let me live it down though!

 

Bill,
When my boat was first delivered the marina 3 weeks ago the starboard engine wouldn't crank at all. The delivery tech had me push the emergency button plus the starboard start toggle and it fired up. The batteries had been disconnected over the winter and not completely charged before being disconnected. In addition I was getting a low battery alarm from the CO sensor so I was not a happy new boat owner. The next week after being connected to shore power for 6 days, no more problems. I think the starboard batteries may be also be house on my boat so that might be another reason they were down more than the port ones.

 

Hi Bob,
does that alarm trigger when you turn the keys on below for the port or starboard engine??? like a screech sound??
i know when i fire the engines up at the helm there is a momentarily beep noise , i understand its the oil pressure monitor sensor....