So I have a 1989 Reinell with OMC 5.0 - brief history to give context to problem. Boat is on lake only in spring/summer months. Last year boat performed fine all season. Off lake last October and dry stored until May this year (same as every year). Changed impeller to begin season. Boat was run twice without issue. On third run, pegged thermostat, shut down engine and got towed back to marina to trailer boat. Once out of the water, had impeller changed (the old one had shredded and lost a vane - perhaps due to dry starting) - shop said they checked hoses at PS cooler for debris, tested on muffs and it ran at 160. Boat back in water, made it home (about 3 miles), but it started getting hot (190) on way back. Once back to home dock, it runs hot from get go after a couple minutes. I replaced the thermostat, but it still ran hot. So I pulled each hose (one at a time) off the thermostat housing and I'm getting no water, just exhaust gas and a little water vapor. I checked and there's nothing blocking the intake on the outdrive, and it sounds like it may be a seal issue.
So, I have a couple concerns and they may have the same cause. One, something caused it to suddenly run hot (sounds like blockage, but maybe seal) even before the old impeller shredded. Now, without there being any water flow (and before I have to try and trailer it - yet again, to get it out of the water and to a shop), I wanted to get some input. I was going through the OMC service manual, trying to get clues of where the problem could be, but I think much of the initial things to check, like intake screen or water tube would require the boat to be out of the water and me to take the outdrive apart. So I was curious as to (given my limited explanation) any ideas as to what the probable culprit could be - again if I have to take it out, I will, but if there's some other things I could look at first, I will.
What's odd to me is that it ran on several occasions fine and then would overheat.
So, I have a couple concerns and they may have the same cause. One, something caused it to suddenly run hot (sounds like blockage, but maybe seal) even before the old impeller shredded. Now, without there being any water flow (and before I have to try and trailer it - yet again, to get it out of the water and to a shop), I wanted to get some input. I was going through the OMC service manual, trying to get clues of where the problem could be, but I think much of the initial things to check, like intake screen or water tube would require the boat to be out of the water and me to take the outdrive apart. So I was curious as to (given my limited explanation) any ideas as to what the probable culprit could be - again if I have to take it out, I will, but if there's some other things I could look at first, I will.
What's odd to me is that it ran on several occasions fine and then would overheat.
