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My Mariner 50 has had same problem 2 years running. bottom…

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My Mariner 50 has had...
My Mariner 50 has had same problem 2 years running. bottom cylinder quits running for periods of time.. 1.5 miles from start it quits. Can start again in a few minutes. I have changed ignition coils (same brand) - did not solve problem.
Submitted: 11 months ago.Category: Boat
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8/6/2017
Marine Mechanic: Tan, MerCruiser Certified Technician replied 11 months ago
Tan
Tan, MerCruiser Certified Technician
Category: Boat
Satisfied Customers: 11,360
Experience: 40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.
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Hello, I'm Tan. Welcome to JustAnswer. I'm reviewing your question and will reply momentarily.

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Marine Mechanic: Tan, MerCruiser Certified Technician replied 11 months ago

Then you have a bad switch box or bad trigger.

Could I get the engine serial number please?

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