Hose to clamp while being towed?

[code3f250]

Could someone please point out or even draw a little arrow to show which hose gets clamped while being towed. The manual has a horrible picture and I just can't figure it out.

 

[Luna-azul]

Yes. Manual says red tape. Don't see it.

 

[KK40384]

The thick black one coming out of the waterbox.

 

[code3f250]

excuse my ignorance but which one is the water box. I see a lot of think hoses lol

 

[moochy]

I'll take a photo of my engine bay on te weekend. I have a tow valve installed.

 

[pwgsx]

It will the the 1/2 inch hose that is coming from the pump wall near the driveshaft. Hard to tell but its not the one you flush with, that one dumps water when riding. The other pumps water from the pump pressure. I'll try and take a pic this weekend.

 

[timeman]

If you have a shop manual look at the "COOLING SYSTEM" chapter. They have a very easy to understand picture of the engine and all the hoses are highlighted with arrows showing water flow directions.

 

[AircraftDoc]

Could someone please point out or even draw a little arrow to show which hose gets clamped while being towed. The manual has a horrible picture and I just can't figure it out.View attachment 21350

The reason that you have to clamp off the hose for towing is so water does not enter the engine. Follow the hoses that come off the innercooler. That should give you your answer. The hose supplies water from the jet pump (aft) and runs forward to the innercooler. Then the returning hose runs to the exhaust manifold and the water flows on out thur the muffler. Towing puts a positive pressure in the hose. When the engine is running it pushes air and the water out. With the engine not running, water can back flow into the cylinder thur an open exhaust valve.
Find the intercooler in the manual. Wiggle and follow the hoses. You should find the correct one.

Good Luck,

Doc

 

[OldSchool]

This used to happen so frequently we started telling folks at delivery to pinch the hose off if they wanted/needed to tow it. I carry two plastic hose pinchers with me in the front storage.

I cant tell you how many times we found engines FULL of water after the customer decided he had to tow his ski behind his boat, claiming the battery died or that the starter was bad.

I have to admit though, trying to get a clamp on a 94XP cooling hose in the water is a lot easier said than done.


Sent from my Samsung Galaxy S4

 

[code3f250]

thanks everyone. I'll try and take a look at it in the next few days

 

[Floridan surfer]

So in the event that someone did tow without clamping off this hose, what is the best way to check for water intrusion? Could you take the spark plugs out and turn the engine over? Could water have made it all the way into the crankcase?