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Dominick
Dominick, Marine Mechanic
Category: Boat
Satisfied Customers: 1009
Experience:  25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified
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No fire at plugs : 2010 mercury 125 ran goo most of the day

Customer Question

no fire at plugs
JA: Sometimes things that you think will be really complicated end up being easy to fix. The Marine Mechanic I'm going to connect you with knows all the tricks and shortcuts. Tell me a bit more about what's going on so the Marine Mechanic can help you best.
Customer: 2010 mercury 125 ran goo most of the day then it missed fire one time then it died. No spark at plugs
JA: Is there anything else important you think the Marine Mechanic should know?
Customer: not really
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Marine Mechanic about your situation and then connect you two.
Submitted: 6 months ago.
Category: Boat
Expert:  Charles replied 6 months ago.

Hello, my name is***** will assist you.

Would you please post the serial number of the engine?

Customer: replied 6 months ago.
i don't know the serial number
Customer: replied 6 months ago.
2010 mercury salt water edition 125hp
Expert:  Charles replied 6 months ago.

4 cylinder?

Customer: replied 6 months ago.
Expert:  Charles replied 6 months ago.

Ok got it . How are you testing for spark on the engine?

Customer: replied 6 months ago.
At the cap with a screw driver
Expert:  Charles replied 6 months ago.

Ok, thats not the correct way, but...

Is the kill lanyard installed on the boat?

Customer: replied 6 months ago.
I tried It before it worked
Expert:  Charles replied 6 months ago.

Are you near the boat currently?

can you disconnect the black yellow going the the kill switch and see if the spark returns?

Customer: replied 6 months ago.
No
Customer: replied 6 months ago.
Tomorrow I will check to see if the coil is getting power
Expert:  Charles replied 6 months ago.

Ok, thats fine, there are no time limits here. your engine should have CDM type coils, they are a bit tough to test without the proper test gear.

Customer: replied 6 months ago.
They require 12 volt power right
Customer: replied 6 months ago.
I have a volt meter
Expert:  Charles replied 6 months ago.

The CDM will be getting fuel from the stator and trigger. You will be getting several hundred volts on the Green wires while cranking. Test it in AC.

Customer: replied 6 months ago.
Okay
Expert:  Charles replied 6 months ago.

Talk to you then.

Customer: replied 6 months ago.
Ok thank you
Expert:  Charles replied 6 months ago.

Your Welcome.

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