Kawasaki Jet Ski STX 1100 and water coming into the engine compartment while at full throttle;

Robertse

Seaman
Joined
Jan 9, 2024
Messages
56
Dear All,
I have Kawasaki Jet Ski STX 1100 and water coming into the engine compartment while at full throttle; I can’t see any water coming in while the Jet Ski is stationary. I also internally filled the hull up with fresh water while the Jet Ski is on the trailer and I could not see any water leaks coming from inside to the outer side. Hence there must be a seal or intake issue, can you please direct me what should I check and how?
Thanks in advance.
 

alldodge

Moderator
Staff member
Joined
Mar 8, 2009
Messages
42,382
Tie the rear of the ski to shore or something that will hold, even an anchor. Remove the seat and give it throttle
 

Robertse

Seaman
Joined
Jan 9, 2024
Messages
56
Dear All,
I have Kawasaki Jet Ski STX 1100 and water coming into the engine compartment while at full throttle; I can’t see any water coming in while the Jet Ski is stationary. I also internally filled the hull up with fresh water while the Jet Ski is on the trailer and I could not see any water leaks coming from inside to the outer side. Hence there must be a seal or intake issue, can you please direct me what should I check and how?
Thanks in advance.
Tie the rear of the ski to shore or something that will hold, even an anchor. Remove the seat and give it throttle
Hi, I tied the boat and noticed water is coming from the Hull at the rear left bottom corner below the exhaust bottle, I disconnected the exhaust bottle, and re-cramp the water hose next to the exhaust hose going to the outer hull, at the rear. Then I took a video and notice it was not coming from the hose but the hall. Before I apply fiberglass putty around the leak area, does any else have any suggestions. See the attached video of the water leak.
 

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alldodge

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Messages
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I would remove the nozzle and reseal. Putting putty or anything else will just be a band-aid and don't think it will last
 

Robertse

Seaman
Joined
Jan 9, 2024
Messages
56
I would remove the nozzle and reseal. Putting putty or anything else will just be a band-aid and don't think it will last
It looks like the water is commign in from the side of the nozzle. I will remove the plate underneath the Ski, and furher inspect. I will re-fibreglass the Nozzle and around it.
 

Robertse

Seaman
Joined
Jan 9, 2024
Messages
56
It looks like the water is commign in from the side of the nozzle. I will remove the plate underneath the Ski, and furher inspect. I will re-fibreglass the Nozzle and around it.


Hi, thanks for the reply. I have removed the plate underneath the Ski and could not see any cracks etc. However I placed water proof silicon at all the joints, then on the inside I re-fiberglass around the noozle with epoxy resin, mixed with talc. I am about to put a second layer of epoxy and put it in the water to test it. I am Sydney Australia in the middle of our summer, hence I will like to use for the remaining summer,,, Thanks again
 
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