Water in engine from flush hose?

[juice it]

Is there supposed to be a check valve or something that would stop water from the hose flush from entering the engine? I have an rxp and an rxt and have had the hose on without the engine many times never knowing it could be a problem and now my engine on one is full of water. Why would this have never happened before to me? Did a check valve fail or was I just lucky before? I got a pump and pumped out the water and oil and put new oil in and got it started and then changed the oil again but it is smoking really bad and I am wondering what else I could have messed up. They are 2006 models. Thanks for any input.

 

[jmorash]

yea. you always need to have the engine running before you turn the flush hose on. Try letting what ever is smoking burn off by cruising around at light throttle. I got water in my engine and after getting it out, it went through alittle sluggish period of smoke and hesitation. Buut now its good.

 

[Michael211_2000]

There is a check valve in there, but it operated the opposite direction than you think... the check valve prevents water circulating from the jet pump from pouring out that flush port when you're operating on the water (hence, you don't have to manually block the port off or anything). But when you attach a waterhose to that port and turn the water on, you're immediately pumping water into the exhaust manifold and it only holds so much before water pours in thru whichever engine exhaust valve is open, then it fills that cylinder up with water and the water starts to seep thru the piston rings down into the crankcase oil. Always attach the water hose but leave it OFF, start the engine, then turn the water hose on (so that the engine's exhaust will be blowing the water out of the exhaust manifold and into the waterbox). Then, turn OFF the waterhose, stop the engine, and de-tach the waterhose. It should always be done in this order!

- Michael

 

[juice it]

Changed oil once again put it in and it ran like crap for 25 min. Went and got new plugs and gas and it is back to normal. I can't believe after all these years of flushing this has never happened before. Thanks guys!

 

[Michael211_2000]

Well, your luck ran out. LOL!

It all depended on how much time elapsed from you turning the water on till you started the engine.... 15, 25, 30 seconds or so maybe? Somewhere in there the water will start flowing from the exhaust manifold into an engine cylinder. Sounds like you got distracted for alot longer this time and ended up not trying to start till it was already flooded with water. Luckily you did no serious damage, and now you know better!

Regards!

- Michael

 

[juice it]

I don't feel like it was any longer than usual but who knows. I bought these two skiis new and have flushed them tons of times so I don't know how I never heard this before. Anyway, had them both out yesterday and had fun. Only a couple small issues to sort out now!