SoCal Jet Boats
Tech Talk => Engine Mechanical / Electrical => Topic started by: boscoooo on June 29, 2013, 10:58:04 AM
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So today took the boat out for the first time. And it ran great until I got to the far side of Elsinore and the water temp went up to about 220 so stopped and waited for it to cool down. So i started going again the temp went back down to 160 and next thing I knew the motor cut out and smoke pumping out of the carb and the oil breather so after we got towed back in by a scjb member didn't get his name but thank you if you see this but I pulled a hose off the exhaust manifold and there was no water in there so I'm thinking the water pump but not sure
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So today took the boat out for the first time. And it ran great until I got to the far side of Elsinore and the water temp went up to about 220 so stopped and waited for it to cool down. So i started going again the temp went back down to 160 and next thing I knew the motor cut out and smoke pumping out of the carb and the oil breather so after we got towed back in by a scjb member didn't get his name but thank you if you see this but I pulled a hose off the exhaust manifold and there was no water in there so I'm thinking the water pump but not sure
the jet pump is a giant water pump. if you were moving forward you had plenty of pressure. was the gate valve open and were any of the hoses blocked?
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The gate valve was open none of the lines were pinched I also disconnected the hose from the gate valve and no water came out of there ether
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The pump has something in it. ...... obviously.
-beerjet-
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if you have access to a garden hose, back flush to hose going to the pump.
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hopefully you find the clog. ive sucked up a giant weed a time or two before...
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Before you anything....pull the fitting out of the pump that feeds water to the motor..
I had a pump bearing fail, the shaft walked forward and ground the impeller into the suction housing packing the fitting with aluminum chips.
The fitting off the pump is the bottleneck.
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Well it went from bad to worse I found a hole in the oil pan so I pulled the motor turns out it threw a rod