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Tan, MerCruiser Certified Technician
Category: Boat
Satisfied Customers: 11078
Experience:  40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.
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No spark on a mariner 60 horse

Customer Question

No spark on a mariner 60 horse
Submitted: 1 month ago.
Category: Boat
Expert:  Tan replied 1 month ago.

Hello, I'm Tan. Welcome to JustAnswer. I'm reviewing your question and will reply momentarily.

Expert:  Tan replied 1 month ago.

Could I get engine serial number please?

Do you have a peak reading volt meter, spark gap tester?

Customer: replied 1 month ago.
checked the blue wire while motor was cranking I had 82when I stop cranking it peak to 139 using a DVA
Customer: replied 1 month ago.
I check spark on each cylinder and only had spark on number 2 cylinder I got number 1 to spark initial crank for like half a second
Expert:  Tan replied 1 month ago.

The spec on the blue wire at cranking speed peak volts 180-400 volts. So your stator is weak.

Replace the stator. The only reason it sparked is the voltage spiked. Still the voltage is to low at cranking speed.

Customer: replied 1 month ago.
Cool I will order one tomorrow
Expert:  Tan replied 1 month ago.


I hope I’ve provided the information you were seeking. If you are happy with my service, your 5-star rating at this time is most welcome. If you need more help, please let me know so l can continue to assist you.

Thank you.......Tan