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Thread: Yamaha 50hp over heat issue...
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08-03-2020, 11:14 AM #1
Yamaha 50hp over heat issue...
I'm looking to buying pontoon with 2004 Yamaha 50hp 2 stroke. Would like to add noticed issue after about 3/4 mile on water, no alarms, only surging engine rpm.
Owner had impeller replaced because of overheat and no water peeing out. All was ok for about 1 mile when peeing stopped. Shop that did impeller told him if issue returns will need to dismantle powerhead to clean out impeller remains. Estimate was $2500... my question does this sound correct and to what extent does powerhead need to be torn down?
May even consider finding a 90 or 115hp depending what I can buy it for...
thanksLast edited by Euroski; 08-03-2020 at 12:05 PM.
Checkmate 2002 Convincor 270 496 MAG-HO
2003 Cougar 22MTR w/300xs SOLD
90 21Skater w/300xs - sold
98 STV Euroski w/280 - sold
2006 Trailblazer SS 6.0l 395hp
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08-03-2020, 06:16 PM #2
They prob talking bout cleaning out exhaust/adapter plate under powerhead, but if it got remotely hot , the complete kit should had been replaced , idk bout a yammy. does it have poppet? If so it should b replaced and stats checked then if it does it again , start checking else where (under ph)
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08-03-2020, 08:07 PM #3
Been trying to find water flow diagram but so far no luck.
I'm told it's the same as merc uses but painted black.Last edited by Euroski; 08-03-2020 at 08:09 PM.
Checkmate 2002 Convincor 270 496 MAG-HO
2003 Cougar 22MTR w/300xs SOLD
90 21Skater w/300xs - sold
98 STV Euroski w/280 - sold
2006 Trailblazer SS 6.0l 395hp
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08-03-2020, 08:18 PM #4
"Same as merc" is what I was thinkin but not sure. I'd check poppet 1st. If a piece rubber got thru it went straight to poppet, or maybe sum corrosion has it stuck or head gasket depending on the temp it reached
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08-06-2020, 01:11 PM #5
Since this is the same as a 50hp merc, anyone have the manual to send photo of water flow?
BTW, it shows up as a 2005 50TLRDCheckmate 2002 Convincor 270 496 MAG-HO
2003 Cougar 22MTR w/300xs SOLD
90 21Skater w/300xs - sold
98 STV Euroski w/280 - sold
2006 Trailblazer SS 6.0l 395hp
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