how do i properly backflush a sj?

[Borderguy]

Basically, i think i got some sand restricting the flow. Last time i rode was in real sandy water. I went for a ride yesterday and after about 10 minutes of riding, the ski started bogging down. i shut it off and had steam coming out of the hood vents. i let it cool down and then rode back to the ramp. Pulled the hood off and the expansion chamber was hot, but not too bad, but i could feel the heat radiating off the head. I am getting the normal amount of water out of the pissers. Ive been told try backflushing with water, and was told if i have an air compressor, backflush with as much pressure as i can. Now, i have a couple of questions. 1) If i use air, can too much air damage the seals and gaskets on the motor and exhaust?
2) How exactly do i backflush this? What do i disconnect and where do i hook in at?
Its a stock 701 w/ a factory type 9 Single cooling line running in T'd into dual cooling

 

[stanton]

backflush means to flush with water flow opposite of normal.

 

[Borderguy]

backflush means to flush with water flow opposite of normal.

Wow......

Ok guys, how bout some real help/advise on this.

 

[RoyalFlush@PCB]

Backflushing is typically done by flushing thru the pissers. You can rig up kit with parts from a hardware store.

 

[Borderguy]

Backflushing is typically done by flushing thru the pissers. You can rig up kit with parts from a hardware store.

Right, but do i need to disconnect any of the other lines? DO i block off the other pisser while using the first one? How much water/air pressure is max? IE: Can i damage something by using too much pressure.

 

[RoyalFlush@PCB]

Right, but do i need to disconnect any of the other lines? DO i block off the other pisser while using the first one? How much water/air pressure is max? IE: Can i damage something by using too much pressure.

I flush both pissers at the same time and don't disconnect anything. The water goes out thru the exhaust and pump.

Not sure on the Max pressure question...sorry.

 

[Borderguy]

I flush both pissers at the same time and don't disconnect anything. The water goes out thru the exhaust and pump.

Not sure on the Max pressure question...sorry.

Thats alright, I just was told that doing it with air is quicker and does a better job. What type of set-up are you using to do both pissers at the same time?

 

[FX-Rex]

make sure the engine is running before you flush

 

[stanton]

i have a feeling something else may be wrong. you say you have the normal amount of water flowing out of the pissers still, ive gotten clogged lines and its obvious that something is restricting the flow. i ride sandy water 90% of the time too.

 

[Borderguy]

i have a feeling something else may be wrong. you say you have the normal amount of water flowing out of the pissers still, ive gotten clogged lines and its obvious that something is restricting the flow. i ride sandy water 90% of the time too.

Well, I have had this set-up for 4 years now and last time i rode was about a month ago on a lake that has a huge sandbar going around it. WHen i was riding it to the ramp, i wasnt wearing shoes and thought the exhaust felt hotter than normal, but didnt do anything then. Kinda forgot about it.
Im not sure what else it could be. THe pissers appear to have a normal amount of water coming from them, but it could be a little less and i really wouldnt know.

 

[QuickMick]

Here is what you need:

http://www.x-h2o.com/threads/53025

 

[Borderguy]

Here is what you need:

http://www.x-h2o.com/threads/53025

Thanks Mick,
I cant view the pics here, ill try when i get home to see what it looks like

 

[rollin5150]

Are you running a AM pipe? If it is anything like the FFP, the head pipe water screws injectors can become clogged causing your expansion chamber to heat up quite a bit, as you stated. You would also still see normal water flow through your pissers. I don't think back flushing will help with this. The best way I have found is to remove the open screws and poke a wire through to clear the hole.

 

[Borderguy]

Are you running a AM pipe? If it is anything like the FFP, the head pipe water screws injectors can become clogged causing your expansion chamber to heat up quite a bit, as you stated. You would also still see normal water flow through your pissers. I don't think back flushing will help with this. The best way I have found is to remove the open screws and poke a wire through to clear the hole.

Yeah i have a FPP Type 9 on it. I expierenced that issue before where the stinger heated up and caused the waterbox to melt the steering cable. But the pipe itself is fine. Its the Head and Block thats really heating up. WHich i think backflushing should clear it up. I took the jets out of the Pipe last time and cleaned them out. It doesnt take much sand to clog them up. My Stinger now has a sea-doo inline oil filter on it. Costs like $4, prevents sand from clogging it.