I have a 98 evinrude 225 carburated. i started the motor up yesterdayand looked at my tach and it said the motor was turning 2200 rpms at idle. the motor was not reved up at all it was idling just like normal. coulld the tach be going bad or already gone? or is there anything in the motor that could cause it to sentd the wrong numbers to the tach. my tach is just an old analog gaffrig gauge.
any help is appreciated.