Speedomoter

millz90

New Member
Oct 1, 2009
175
North Carolina
Boat Info
1995 Sea Ray 175
Engines
3.0 Mercruiser Alpha I
Ok, so i just finished replacing the trim limit sender and realized the i didn’t know if the speedometer worked or not. I took about 90 PSI and blew it thru the end of the cable at the back of the boat and the speedometer didn’t move.
I just replaced all of the gauges so i know that is new and the hose was connected to the back of the gauge.

My questions are:

Is that a good way to test the speedometer? (Blowing air from the back)

Does that mean the tube has a hole or kink in it and i have to take the entire bell housing off AGAIN.. :smt021
 

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