I have a 1996 Sea Doo Challenger with 787. Ktm 125 sx 2000 service manual. This spring I found that one of the plugs on my exhaust manifold had corroded through so I removed the manifold and alumiwelded the hole closed. Access our operator's guides and manuals by year and model. Discover safety tips and. Heading out on the water. 2017 Seadoo Challenger 1800 Service Manual. The Internet has provided us with an opportunity to share all kinds of information, including music, movies, and,. It seemed to be a solid repair. So I put all the parts back together and even used RTV gasket material. So the boat runs fine, but after a while of running at 6-7000 rpm I noticed some smoke in the engine compartment and noticed that the exhaust manifold which had been purple was now black (when I heated the other part of the exhaust manifold in the barbeque grill to facilitate the alumiwelding it turned the same color of almost black). The engine seemed hot so I poured a little water on the manifold and it steamed. At all times I got the little pee stream out the back of the boat which seemed maybe slightly warmer than the lake water. I ran at idle back to the dock and when there I noticed the manifold was cool to the touch and the engine seemed to run fine. So can anyone tell me what is happening here? Is there an obstruction in a hose maybe? Did i inadvertantly block something with my welding? Is it possible the boat is getting just enough water to cool at idle speed but not at high RPM? Is there something I can check at the dock without pulling out the boat? Keep in mind that competent mechanics in this area are rarer than winning lottery tickets. Last year the shop had my boat from May 15 until Oct 28 so I am reluctant to give up yet another season to have it sit in a back lot. Look at the line going to the water control valve on the water box. Did the coupler between the pipe and the water box get soft? Is the pipe discolored before the little coupler before the water box? The wcv diaphragm could be bad and leaking water or the valve has failed. Pull the line off from the front of the head cover to the pipe, is a half inch hose. Take a mirror and look in the fitting off the front of the head, is it corroded internally? These are typical issues. Post a pic of the pipe, that will point is I the right direction. OK, I pulled the hose from the cylinder head to the exhaust manifold pipe. It was clear. I started the motor and water came out of the head at a pretty good stream. So what next? Seadoo Service ManualI wonder if the obstruction is inside the manifold itself. Is there anyway to see where the water comes out of the manifold without pulling the manifold off the engine again? Keep in mind that the boat is in the water and the trailer is kind of hard to get to. Another question is: how warm is the exhaust manifold supposed to get? Seadoo Challenger Parts![]() Dodge Challenger Owners Manual 2017I know I am not using the correct terms, but the 'first' pipe coming off the cylinder head (the bent purple one) stays reasonably cool. It is the 'second' pipe leading to the 'muffler' that gets hot enough to boil water when dribbled on it. I don't remember it ever getting that hot before. As before, when I idled back to the dock (about a 10 minute ride through the whole marina) the engine was pretty cool when I got back. I could place my hand on any part of it.
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