First time posting in this forum but I’m hoping to get some good information...I just bought a 1984 sea ray seaville with the mercruiser 140 and aloha 1 gen 1 out drive the boat has been very well taken care of and has only been in the water for 5 years of its life, and is a 1 owner boat, however we’ve ran into some issues
first time out the boat started to over heat so we shut it down let it cool for a while then brought it home, after some looking we found the thermostat was rusty and seized open which wouldn’t cause the over heat but the impeller wasn’t pumping so we replaced that went back out and it was good for most of the day then started to over heat again, got it back home and found the water pump on the engine was worn out pretty bad and found the water passages on the riser and the spacer to be completely gunked up however had good water flowing out of the exhaust manifold before those spots took the boat out after and real good clean and was out for about 7 hours tubing and such and at the end of the day temp climbed to about 185 and we shut it off for a bit....so that’s our first mystery we are thinking more debris came up stream and clogged things up again or the exhaust manifold wasn’t flowing water as good as we thought it was so my question is is it possible to use that marine flush that’s meant for eating away corrosion and gunk inside the cooling system to flush out the passages?
second issue was when we were last out the boat was shutting off very weird it was gurgling and trying to stay running several seconds after shutting the key off then once we restarted we found that the boat didn’t want to go under load it was just dying out, when we got home we found a little dibree in the fuel screen and the filter itself was crushed, also found some people saying run 93 but we’ve been running 87 octane, could the filter and the low octane gas be the hole problem we are having and what else should we look at while we are at it?
the boat was originally ran in salt water but was flushed and winterized every year with documents to show us what shop did it however we run the boat in freshwater now
any help would be greatly appreciated!
first time out the boat started to over heat so we shut it down let it cool for a while then brought it home, after some looking we found the thermostat was rusty and seized open which wouldn’t cause the over heat but the impeller wasn’t pumping so we replaced that went back out and it was good for most of the day then started to over heat again, got it back home and found the water pump on the engine was worn out pretty bad and found the water passages on the riser and the spacer to be completely gunked up however had good water flowing out of the exhaust manifold before those spots took the boat out after and real good clean and was out for about 7 hours tubing and such and at the end of the day temp climbed to about 185 and we shut it off for a bit....so that’s our first mystery we are thinking more debris came up stream and clogged things up again or the exhaust manifold wasn’t flowing water as good as we thought it was so my question is is it possible to use that marine flush that’s meant for eating away corrosion and gunk inside the cooling system to flush out the passages?
second issue was when we were last out the boat was shutting off very weird it was gurgling and trying to stay running several seconds after shutting the key off then once we restarted we found that the boat didn’t want to go under load it was just dying out, when we got home we found a little dibree in the fuel screen and the filter itself was crushed, also found some people saying run 93 but we’ve been running 87 octane, could the filter and the low octane gas be the hole problem we are having and what else should we look at while we are at it?
the boat was originally ran in salt water but was flushed and winterized every year with documents to show us what shop did it however we run the boat in freshwater now
any help would be greatly appreciated!