Cooling water pisser issues - 97 GTi

[kevinz]

I'm going to ask this here because the post I made on the Facebook SeaDoo owners page has now turned into a discussion of whether or not my ski has power valves :facepalm:

OK..I have been staring at the cooling system flow diagram in the service manual for my 1997 GTi, 717 engine, for like 20 minutes now and I am at a loss to explain this. Maybe one of you can.

The ski does not overheat. I docked the ski and ran it while holding my hands on the engine. All feels well. The water inlet/outlet hoses are connected right as verified per the manual and using my 96 GTi, same engine, as a reference.

The pisser is not pissing. It puts out a steady stream on my 96-even at idle-but nothing on my 97. I reverse-flushed the 97 a few days ago using the factory reverse flush spot on the back by the pump. The pisser sprayed water well.

I'm at a loss to explain this. I can't have a blockage as there's only one possible source point for water in the pisser/engine drain line-an elbow on the bottom of the exhaust manifold. I also took the pisser line off and blew through it and sucked on it-seems clear to me.

I read elsewhere that a possibility is that the water is bypassing the pisser and going straight for the fitting on the exhaust outlet through the hull. Does this make sense? My 96 has the same setup and it doesn't do this...

 

[MikeM8560]

im curious also my 97 gti I just got only has a very weak pee stream my gtx squirts 30 feet

 

[benjilafouine]

I have to make that joke: weak stream = prostate problems...



Benji.

 

[1of500]

I'm going to ask this here because the post I made on the Facebook SeaDoo owners page has now turned into a discussion of whether or not my ski has power valves :facepalm:

OK..I have been staring at the cooling system flow diagram in the service manual for my 1997 GTi, 717 engine, for like 20 minutes now and I am at a loss to explain this. Maybe one of you can.

The ski does not overheat. I docked the ski and ran it while holding my hands on the engine. All feels well. The water inlet/outlet hoses are connected right as verified per the manual and using my 96 GTi, same engine, as a reference.

The pisser is not pissing. It puts out a steady stream on my 96-even at idle-but nothing on my 97. I reverse-flushed the 97 a few days ago using the factory reverse flush spot on the back by the pump. The pisser sprayed water well.

I'm at a loss to explain this. I can't have a blockage as there's only one possible source point for water in the pisser/engine drain line-an elbow on the bottom of the exhaust manifold. I also took the pisser line off and blew through it and sucked on it-seems clear to me.

I read elsewhere that a possibility is that the water is bypassing the pisser and going straight for the fitting on the exhaust outlet through the hull. Does this make sense? My 96 has the same setup and it doesn't do this...

1/2 the guys on fb only know enough to be dangerous. Air flow and water flow are two different animals. Sound like you may have some restrictions probably from sand.

 

[benjilafouine]

I have a GTI 717 as well. Obviously something is blocked somewhere. When running at idle, water is not pissing hard but at full throttle, it has significant pressure.

Benji.

 

[mikidymac]

All the 97' GTI's that i have worked on have this issue. The only thing I have come up with is the Tee fitting at the rear that comes from the low level drain goes from 3/8" and continues on 3/8" out to the exhaust outlet fitting. The 1/4" Tee part goes to the pisser. If you look at the parts diagram it shows the Tee as being 3/8" in then to 1/4" to the pisser and the Tee part is 3/8" to the exhaust. All I can figure is at low pressure at idle the 3/8" straight through is the path of least resistance to the water bypasses the pisser at idle. IF the fitting was actually as the parts diagram shows it to be you might get a little more pisser flow at idle.

 

[Lake Sailor]

OP, my 97 GTI does not produce much at idle, but I get a good stream at higher throttle. Usually need a passenger to observe this