What’s this small tube do? Pics incl.

jimmbo

Supreme Mariner
Joined
May 24, 2004
Messages
13,467
Welcome to iboats

That Hose sticking out of the Motor is the Pitot Tube Hose for Speedometer Water Pressure. The Hose zip tied to Trim Wiring Harness, likely the Hose going to the Speedometer Gauge
 

jimmyu

Recruit
Joined
Jan 21, 2025
Messages
2
Welcome to iboats

That Hose sticking out of the Motor is the Pitot Tube Hose for Speedometer Water Pressure. The Hose zip tied to Trim Wiring Harness, likely the Hose going to the Speedometer Gauge
Thank you so much! I could not figure out how to find an accurate search on YouTube about that tubing. After you told me it had to do with the speedometer I was able to find videos to help fix the problem. I would’ve been frustrated for hours if not days trying figure out how to search for the solution. You were a really big help and I really appreciate your reply to my post. Great forum and I will be coming back here often for any other boating issues.
 

airshot

Vice Admiral
Joined
Jul 22, 2008
Messages
5,191
For some reason they fail rather quickly on outboards. Often clog up and fail to give an accurate read. Pressure gages are not accurate anyway and most boats have GPS speed on the fish finder/ depth gage unit which is far more accurate ! Mine has never worked correctly since I bought the motor.
 

boscoe99

Lieutenant Commander
Joined
Aug 22, 2013
Messages
1,999
Just a matter of service.

All airplanes of all kinds take off, fly and land based on pitot tube air speed. More important to them than GPS speed.

Speed through the water is more important to some boaters than is GPS speed.

Many boats don't have a GPS. Pitot speed is all they have. If that.
 
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