Skip to content

Why is my boat speedometer not working?

Asked by: Desamparats Kenzel

asked in category: General Last Updated: 25th January, 2020

Why is my boat speedometer not working?

The usual problems are a blocked orifice (little hole in the arm), a blocked vinyl tube and a disconnected, broken, cracked or holed vinyl tube. The easy way to check if to remove the tube from the pitot tube mount and blow into the vinyl hose. If the speedo moves, it’s likely the pitot is plugged.

Similarly one may ask, what causes a boat speedometer to stop working?

The usual cause is a clogged intake hole. That is either in the front of the lower unit or a separate pickup attached to the transom. The gauge measures pressure. You can disconnect the hose at the gauge and blow backwards to disloge whatever is clogging it.

Additionally, how does a speedometer work on a boat? Speedometer (Pitot Tube Type) The pitot tube speedometer operates by air pressure changes in the hose and speedometer. Water is pushed through the pitot into the hose, compressing the air. Air pressure increases with boat speed, causing the gauge to indicate faster speeds.

In this manner, how do I fix my boat speedometer?

Boat Repair: Fixing the Speedometer

  1. Step 1 – Check the Cause of the Damage.
  2. Step 2 – Locate the Speedometer Tube.
  3. Step 3 – Check for Holes/Cuts on the Tube.
  4. Step 4 – Disconnect the Speedometer Tube.
  5. Step 5 – Replace the Tube.
  6. Step 6 – Replace the Pitot Tube.
  7. Step 7 – Check the Speedometer.
  8. Step 8 – Fix the Speedometer.

What is a tachometer on a boat?

A tachometer measures your boat engine’s RPMs. Great Lakes Skipper has tachometers for all different boat engines: outboard boat motor tachometers, inboard/outboard boat tachometers, diesel boat engine tachometers, inboard boat engine tachometers, digital tachometers, analog tachometers, and more.

11 Related Question Answers Found

How do you unclog a mercury pitot tube?

How do you mount a boat speedometer pitot?

How does the speedometer work on a Mercury outboard?

Are boat speedometers accurate?

Leave a Reply

Your email address will not be published.