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Calling all Merc Mechanics
My "new" 1999 Merc 150 is overheating. I was hoping that it was giving false whistles because of dead battery but with a good battery it still alarms.
I started the motor and within 4 minutes the alarm went off. There was a good stream of water spraying out but the water was very hot. I am going to take Kajun's advise and check the thermostats. Are these the thermostat housings?   Also, shouldn't there be something attached to this? 
__________________
*************************************** Stay Safe!  Sold - 1984 V-20 Cuddy with a 2003 Johnson 140 hp gas sippin 4-stroke. 1995 Ranger 250C with a 2015 Suzuki 300 hp 4-stroke. 
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#2
02-17-2007, 08:32 PM
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Calling all Merc Mechanics
My "new" 1999 Merc 150 is overheating. I was hoping that it was giving false whistles because of dead battery but with a good battery it still alarms.
I started the motor and within 4 minutes the alarm went off. There was a good stream of water spraying out but the water was very hot. I am going to take Kajun's advise and check the thermostats. Are these the thermostat housings? Also, shouldn't there be something attached to this?
__________________
*************************************** Stay Safe! Sold - 1984 V-20 Cuddy with a 2003 Johnson 140 hp gas sippin 4-stroke. 1995 Ranger 250C with a 2015 Suzuki 300 hp 4-stroke.
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#3
02-17-2007, 09:23 PM
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Re: Calling all Merc Mechanics
Those hoses look like bleeds, not the t-stats. and the last pic looks like some sort of valve.
I went and looked at my old merc and that is where the T-stats are on it. they just don't look big enough in your pics. If there the old style t-stats you can get them from WEST MARINE or even a evinrude dealer.
__________________
2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR 2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD  AND THE PINK JEEP!!!! R.I.P. http://www.wellcraftv20.com/communit...ad.php?t=11664 
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#4
02-17-2007, 09:23 PM
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Re: Calling all Merc Mechanics
Those hoses look like bleeds, not the t-stats. and the last pic looks like some sort of valve.
I went and looked at my old merc and that is where the T-stats are on it. they just don't look big enough in your pics. If there the old style t-stats you can get them from WEST MARINE or even a evinrude dealer.
__________________
2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR 2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD AND THE PINK JEEP!!!! R.I.P. http://www.wellcraftv20.com/communit...ad.php?t=11664
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#5
02-17-2007, 09:51 PM
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Re: Calling all Merc Mechanics
All I can read on the plate is 166856. I cant tell if there are any letters or numbers in front of this number.
__________________
*************************************** Stay Safe! Sold - 1984 V-20 Cuddy with a 2003 Johnson 140 hp gas sippin 4-stroke. 1995 Ranger 250C with a 2015 Suzuki 300 hp 4-stroke.
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#6
02-17-2007, 09:51 PM
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Re: Calling all Merc Mechanics
All I can read on the plate is 166856. I cant tell if there are any letters or numbers in front of this number.
__________________
*************************************** Stay Safe! Sold - 1984 V-20 Cuddy with a 2003 Johnson 140 hp gas sippin 4-stroke. 1995 Ranger 250C with a 2015 Suzuki 300 hp 4-stroke.
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#7
02-17-2007, 09:52 PM
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Re: Calling all Merc Mechanics
I am not a Merc guy but that is were the stats are. Just take them out for now and run with out to see if that solves the problem, if so get new ones and you good to go!!
As far as the 2nd thing I have no idea?
__________________
1986 V20  Old Fishermen never die, we just SMELL that way!!
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#8
02-17-2007, 09:52 PM
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Re: Calling all Merc Mechanics
I am not a Merc guy but that is were the stats are. Just take them out for now and run with out to see if that solves the problem, if so get new ones and you good to go!!
As far as the 2nd thing I have no idea?
__________________
1986 V20 Old Fishermen never die, we just SMELL that way!!
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#9
02-17-2007, 10:08 PM
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Re: Calling all Merc Mechanics
Wish Bigshrimpin' would stop by...he's a good Merc man...Hey BIG!!...little help over here ;D ...
Recently someone pulled the heads to find SAND filled the water passages...anybody remember who?...the pictures told a sad, but very fixable story... overheat problems: bad t'stat(s) bad water-pump (impeller) water flow (blockage) Let's see...what else?...
__________________
'74 V-20/ BF 150 '95 V-21/ BF 150 '84 V-20/ 200 2.4 Merc '87 V-20/'18 F150 Yamaha 
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#10
02-17-2007, 10:08 PM
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Re: Calling all Merc Mechanics
Wish Bigshrimpin' would stop by...he's a good Merc man...Hey BIG!!...little help over here ;D ...
Recently someone pulled the heads to find SAND filled the water passages...anybody remember who?...the pictures told a sad, but very fixable story... overheat problems: bad t'stat(s) bad water-pump (impeller) water flow (blockage) Let's see...what else?...
__________________
'74 V-20/ BF 150 '95 V-21/ BF 150 '84 V-20/ 200 2.4 Merc '87 V-20/'18 F150 Yamaha
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