Yamaha 250 trip and speed gauge not working

[readafore]

Just ran my 33' Grady offshore for the first time this season and ran great except that the yamaha gauge which shows speed and trip just displayed dashes with no info. Other 3 gauges read well. I have twin 250 four strikes 2005. Any ideas where to start trouble shooting? I have 2 hull mounted transducers for 2 Navnet2's and I get good readings on them and my RD30. Thanks

[jwb]

have the same issue on my twin 150s. Here's how they are set up:

There is a rubber hose on the starboard front of the engines under the cowling. one motor will be capped and one will have a splice leading around the front to the rear port side to an electronic transducer.

On the leading edge of the lower unit just above the "bullet" is a tiny hole. Try clearing this with a paper clip.

If that doesn't work pull the hose off the electronic sensor and gently blow some air thru the hose. Don't go crazy with pressure or it will pop the hose loose in the lower unit somewhere. If the boat is in the water trim the motor down while doing this and look for bubbles. Put hose on sensor and secure with small wire tie.

Hopefully this works as one of mine is plugged solid and one has a loose connection below. I am not going to do a haulout over this. When I do the water pumps next spring I'll fix it then.

BTW, if the tube with the sensor doesn't work, swap to the other motor. I believe the dash display will just start reading that one.