yamaha 05 175hp HPDI - Where does clear tubing go?

modicon2

Seaman Apprentice
Joined
Apr 17, 2008
Messages
48
Greetings,
I've got a 2005 Yamaha 175hp HPDI. There is a ~1/4" clear tubing that come straight off the top of motor (compression nut) that appears to route down engine and go into the bundle of wire/cables that come out front of motor (big flex hose covering) across splash well and into hull.

The tubing had a split in it right above the compression nut and was shooting water out. I was able to temporary fix it on the lake by cutting a small section off and reconnecting it. I'm consider replacing hose and redoing the compression nut fitting.

What is this tubing for? Where does it go?

Thanks!
 

mike_i

Master Chief Petty Officer
Joined
Jun 28, 2017
Messages
879
Are you able to trace out the entire length of the tube? Do you have a water pressure gauge on the dash, if so is it working?
 
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