Mercruiser 496 - intermittent beep, RPM drop and carries on

hi, i have a 2006 Maxum 2700SE with 2006 Merc 496 MAG Bravo 3. I have been getting an intermittent beep, accompanied with drop in revs, which only lasts for about a second - revs pick straight back to where they were and it carries on as before.

Seems to happen shortly after start up, maybe 5 minutes or so, but has also happened at other times and at random revs (today once at 750 and once about 1800) - but never when i am at higher revs, i.e. up on the plane.

The smart craft gauges show a drop in RPM, the voltage drops to 0.0V only on the smart craft not the analog voltmeter.

I have the vessel view mobile and don't get any fault codes.

any thoughts or ideas would be appreciated,

Thanks

Maybe post in the Mercrusier forum,better know how there , http://www.marineengine.com/boat-forum/forumdisplay.php?28-Mercruiser-Sterndrive-Forum

Loss of power to your smartcraft gauge would show a Comm error on a vessel view screen.

Your Smartcraft gauge it self can cause this issue. First thing to do is unplug the gauge and retest.

haventaclue said:

Maybe post in the Mercrusier forum,better know how there , http://www.marineengine.com/boat-forum/forumdisplay.php?28-Mercruiser-Sterndrive-Forum

Click to expand...

Thanks haventaclue ...... clearly have more clue than me!

have reposted there too.

freobhoy said:

Thanks haventaclue ...... clearly have more clue than me!

Click to expand...

I wouldn't bet on that