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Hi, I submitted a question a few minutes ago and got to the where I submitted my cc#. My wifi dropped and an never saw any response. My problem was with a 1989 40hp Johnson not starting and adjusting the manual valve.
Submitted: 3 years ago.Category: Boat
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6/12/2015
Marine Mechanic: Tan, MerCruiser Certified Technician replied 3 years ago
Tan
Tan, MerCruiser Certified Technician
Category: Boat
Satisfied Customers: 11,417
Experience: 40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.
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Hello. My name is ***** ***** referring to the primer solenoid with the red lever? What seems to be the start issue?Has the engine been sitting?Could I get the engine model number please?
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Customer reply replied 3 years ago
Yes sir. The primer solenoid. The engine had been sitting for a year. All the gas was replaced and both carbs were removed and cleaned. I do not have the model number with me right now but can get it later today or tomorrow. As for the start issue, the engine turns fine and fires but won't start. The guy I sold it to messed with the solenoid valve and so we tried to adjust to start. When you go to either extreme the engine backfires.
Marine Mechanic: Tan, MerCruiser Certified Technician replied 3 years ago
Backfire is usually a lean fuel condition. Here is a diagram of the positions. http://ww2.justanswer.com/uploads/jacksparrow1956/2012-02-03_025645_scan0001.jpgWe need to test the primer solenoid pull one of the hoses off that go to the top of carb. Then squeeze the primer bulb with primer in the prime position do you get fuel?
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Customer reply replied 3 years ago
I will need to check this week end. This is great help. Wish I had the chance to go work it today. If in the prime position and I do or don't get fuel what else might I need to check Tan?
Marine Mechanic: Tan, MerCruiser Certified Technician replied 3 years ago
Ok if you get no fuel the primer solenoid lines are clogged with old fuel. If you do get fuel the engine could be flooded from being in the prime position to long or you have an ignition issue. Post back with findings and we can continue.
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