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I have a 2003 fx140 with 250 hours. The last 5 hours it hasn't been accelerating like it used to, and then I found a leak in this rubber joint on the exhaust and pried the crack open a little bit to inspect it. Now it only goes 30mph, I think backpressure might be escaping from the leak? A small amount of water shoots out when reving the engine if that means anything. Anyway I wanted to see if some experienced eyes could help me ID this part so I can order it. The first pic is looking down from the back left corner of the main engine compartment. Thanks guys
edit: a little more background info might help. This is my first ski and I've owned it for 2 months. It worked like a champ at first, hitting its 54mph gps top speed. One day at the beach it wouldn't restart so I had to tow it back in. I took the spark plugs out and sure enough there was water in the cylinders, so I went through the procedure and got new plugs and replaced the oil which was milk chocolate color. It turns out there was a big crack on the bow that was letting a lot of water in the hull. It worked OK after fixing the issues but it was only hitting around 48mph and acceleration wasn't as good. That's when I saw the exhaust rubber crack in the picture and pried it open a little bit to look at it and it will only go 7k out of 10k rpm and only 30mph. I cant imagine that its a coincidence that the first time I took it out after making the exhaust crack worse it will only go 30mph, but im not sure.
Compression in all cylinders is right around ~182psi and all 4 spark plugs look the same.
edit: a little more background info might help. This is my first ski and I've owned it for 2 months. It worked like a champ at first, hitting its 54mph gps top speed. One day at the beach it wouldn't restart so I had to tow it back in. I took the spark plugs out and sure enough there was water in the cylinders, so I went through the procedure and got new plugs and replaced the oil which was milk chocolate color. It turns out there was a big crack on the bow that was letting a lot of water in the hull. It worked OK after fixing the issues but it was only hitting around 48mph and acceleration wasn't as good. That's when I saw the exhaust rubber crack in the picture and pried it open a little bit to look at it and it will only go 7k out of 10k rpm and only 30mph. I cant imagine that its a coincidence that the first time I took it out after making the exhaust crack worse it will only go 30mph, but im not sure.
Compression in all cylinders is right around ~182psi and all 4 spark plugs look the same.
I think it might be part # 31 on this list but i'm not sure?
2003 FX140 CRUISER - FX1000AB Yamaha Waverunner EXHAUST 1 Diagram and Parts
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