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Clogged cooling line (pissers)

S

SocalK

Well-Known Member
Messages
11
Reaction score
15
Points
62
Boat Make
Yamaha
Year
2006
Boat Model
AR
Boat Length
23
I’ve read through the posts but can’t seem to find my answer. One of the rear water outlets (pissers) is clogged, not the forward ones that are easy to access in the engine. It’s one of the further rear outlets. It’s definitely got something in there because I ran weed trimmer line and it stopped and when I pulled it out, it was wet and rancid. I’ve been unable to get it to pass through. Where are these connected on the other end and how do I get to it?
 
A set goes to the exhaust, the other goes to the thermostat housing.

Water pisser routing.png
 
SocalK said:
I’ve read through the posts but can’t seem to find my answer. One of the rear water outlets (pissers) is clogged, not the forward ones that are easy to access in the engine. It’s one of the further rear outlets. It’s definitely got something in there because I ran weed trimmer line and it stopped and when I pulled it out, it was wet and rancid. I’ve been unable to get it to pass through. Where are these connected on the other end and how do I get to it?
Click to expand...
When my pissers have been clogged, I've had my best luck clearing the blockage on the water, engine running. Have someone steer the boat while at no wake speed, I take the thickest cable tie(zip tie) that will fit in the pisser outlet and just start ramming away. With the engine running the water pressure in the discharge line pushes whatever is causing the blockage to the outlet so it's easier to clear.
For the record, before some know it all chimes in......... This is just what has worked for me and it was some type of aquatic vegetation that had gotten in there. I acknowledge it could be something else causing your blockage and this may not work for you. Good luck
 
Last edited:
I agree with the above, the zip tie approach has had 100% success rate for me.
 
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