Problem with tachometer

[roger fernandez]

I have a problem with my rpms tachometer on my boat and wondering if anyone can advise on what the problem could be.<br /><br />The problem that I been having with it on the last couple of times out, is that its having a much higher rpm reading that the motor is actually doing at that given time, and I say this because it is impossible for me to be doing the king of rpm that is reading at the speed that I'm going, for example, when I have the accelarating lever half way up, normally it would be reading between 3000-3500rpms, now having the lever on the same position it reads past 7000-rpms, also at the moment when its acting up like that, when you touch the gauge/tach its very hot. I check all the connections and there isn't any loose or broken cables also I spoke to a mechanic about it and he asked me if the rectifier was working fine, I checked it and it seems to be working fine, it's charging the batteries properly.<br /><br />Any ideas from anyone on what the problem could be or if its sounds like its actually one of the symptoms that you would get when the tachometer is broken.<br /><br />Any advise on this headache is very much appreciated.

 

[Goodoleboy]

Re: Problem with tachometer

I would quess that something has shorted out inside the tach.<br /><br />To my knowledge those things are sealed at the factory and cant be repaired.<br /><br />Toss in the trash, And buy a new one.<br /><br />Good Luck!

 

[roger fernandez]

Re: Problem with tachometer

can anyone else suggest what the problem could be here.<br /><br />Your help in greatly appreciated.

 

[duke3]

Re: Problem with tachometer

Hey roger.<br />I believe Goodoleboy is right, that some thing inside the tach is wrong, unless the adjusting device on the backside on the tach, hase shaked to another position ???? But I dont know what kind of motor and tach you are talking about.<br />You see...most tach can be adjusted on the backside (diff. pole or cyl.)And inside the tach are there a coil with diff. output according to the adjustment on the backside.

 

[Joe Reeves]

Re: Problem with tachometer

Look at the back of the tachometer. There should be a dial there which should be set to number six (6). Let us know what you find.