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Old 10 March 2012, 11:59   #1
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Country: South Africa
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Engine: mercury 225hp
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no water threw telltale with new impeller bt did on first start up!!!!! help

hi i just installed a new impeller to my 200hp mercury blackmax
water was peeing great with muffs only when revved up after installation !!!

took out to local lake for test only peed strong when revved hard

week later went out for the day only steam and little spitting of water in lake while ridding

came home removed poppet valve and cover, started motor for a few second and water comes out threw block


refitted poppet valve with cover and removed pipe going to starboard thermostat, water was was coming out but not flowing was throwing water out. like spitting action but strong amounts

removed pipe going to port side thermostat before thermostat and water also coming out there also spitting

removed pipe from tell tale no water comes out pipe only steam

blowed in pipe which connect to tell tale, blows clean air comes out by exhaust holes

removed pipe from tell tale that attached to block more less where throttle cable is no water coming out there too!!

on top of motor between the two cylinders there is like a outlet used for water pressure gauge open that up water comes at strong while idling...

and also while revving motor up water comes out threw the two top exhaust
holes just on top of leg / under cowl is that normal????

thanks in advance i really wanna take her out later
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Old 10 March 2012, 16:49   #2
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Pretty normal on those engines. The tell tale is controlled by the thermostat. So it will pulse and also be very hot!
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Old 10 March 2012, 20:45   #3
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but at the moment no water is coming out the tell tale while running or idling
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Old 10 March 2012, 20:45   #4
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and i tested it without the thermostats still no peeing
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Old 13 March 2012, 15:56   #5
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can nobody help me??
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Old 13 March 2012, 16:09   #6
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Did you say you had water coming up through each head while the Thermostat covers were off?
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Old 13 March 2012, 16:12   #7
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Quote:
Originally Posted by Turbodiesel View Post
Did you say you had water coming up through each head while the Thermostat covers were off?
yes water coming out
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Old 13 March 2012, 16:13   #8
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thermostate do open when i test them in hot water aswell
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Old 13 March 2012, 16:13   #9
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Lots of water? have you checked all the pipe work to make sure its not blocked up?
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Old 13 March 2012, 16:16   #10
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checked all the pipes nothing blocked used compressor to blow out, lots of water does come out the more i rev the faster it shots out
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