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#1
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I will take the lower back off today or tomarrow and have a look. im familiar with car engines, not outboards, so this is a learning curve. i figure if im gonna learn i'd rather learn on the cheap little motor then the big motor. if it all checks out i will try bringing it down to a lake on a little john boat i have and try it moving through the water. the cooling passages looked clean from what i could see under the thermostat housing, the motor used to be on a sailboat and was only used a handful of times by previous owner.
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One of these days i will manage to get everything working as it should.......yeah right 76 v20 cuddy w/ 78 johnson 175 and 15hp nissan pulled by a POS ford bronco or a 84 diesel suburban 
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#2
01-26-2012, 04:14 PM
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PM Sent
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 1994 Wellcraft V21
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#3
01-26-2012, 04:40 PM
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I agree with the last post check to see ifit was installed right the fins of the impellor should only face one was and make sure the key is in place on the shaft of the impellor. im sure your using a new impellor cause if your not the rubber could have sepperated fron the housing
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love to fish
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#4
01-26-2012, 05:46 PM
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Your description of what it does sounds like the Sierra pump we 1st used on the Johnson tried on my '84...wound up swappin' it out for a real factory replacement which solved the problem instantly...no more off brand pumps for me...
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'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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