I have a new to me 1995 Parker 1700 with an Evinrude E115FSL on it. I got it from the government (ex EPA boat), so it only has 409 hrs on it. It took about 2 yrs to get the paperwork cleared up on it, so during that time I'd test ran it with a hose hooked up to the drain port, per the owners manual; although I've since read that using muffs is much better for the engine. The 1st time I took it out it overheated. I had a local mechanic, who I don't have much faith in, replace the water pump. I don't remember if it was peeing or not before (1st time boat owner, didn't know to look), but it does now. Next time out, it overheated again within about 7 minutes. I ran it on land with muffs yesterday hooked to a diagnostic computer (surprisingly, I got a $40 diagnostic cable/software kit off of Amazon that with a bit of fussing, I got to work). It took 9 minutes at idle to reach 252 on the port gauge and the starboard was 32 degrees. So the starboard sensor has an open wire I need to find. From other research, the most likely culprits are the thermostats or poppet valve. I'm about to order some thermostats, but I can't find the poppet valve in the online catalogs. I tried searching for pressure relief valve, water control valve, actually anything with the word valve in it and couldn't find anything. I'm fairly mechanical, but new to working on outboards. Any idea what else the poppet valve could be called, or other ideas to be looking for?
