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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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Nissan 9.8 4 stroke new plugs and coil no spark! 4 stroke

Customer Question

Nissan 9.8 4 stroke new plugs and coil no spark! 4 stroke
Submitted: 1 year ago.
Category: Boat
Customer: replied 1 year ago.
are there other components that time spark etc before the coil
Customer: replied 1 year ago.
what is a c.d. unit ? can it be the pulser coil ?
Expert:  Jason replied 1 year ago.
Hello my name is ***** ***** I will be helping you today. What year is the engine? Also, troubleshooting the ignition system requires the use of a digital volt/ohm meter, and the know how to use it. What are you looking to do here?
Customer: replied 1 year ago.
I believe 2003 , I would have to go back to boat to verify, I have volt meter and know how to use it.
I am getting a pulse from a test light before the coil (orange wire)
Customer: replied 1 year ago.
what is c d unit they are $ 143 , rectifier $ 88 I would change out parts till I fix it, but would rather isolate
what is wrong.
Customer: replied 1 year ago.
also got a good shock from the plug wire but no defined clicking blue spark!
Customer: replied 1 year ago.
2003 NSF9.8A
Expert:  Jason replied 1 year ago.
If you locate the wires that come out from under the flywheel, you should have a black/red and a blue wire. Do you have those color wires?
Customer: replied 1 year ago.
I will check today, I will bring motor home so I can work on it here, I have ordered service manual too.
Expert:  Jason replied 1 year ago.
Let me know if you have those color wires and we will go from there.
Customer: replied 1 year ago.
2004 nsf9.8a2 serial 02288sxe may 2004
pulser coil ------------- red with white stripe and black
alternator --------- white and yellow
exciter----------- black/ blue stripe and balck red stripe
Expert:  Jason replied 1 year ago.
Hmmm... That doesn't match my book. But lets try this. Set your meter to resistance autoranging. Disconnect the exciter and pulser coil wires. Measure between red/white to ground on the pulser, what do you get for a reading? Measure between black/blue to black/red on the exciter, what do you get?

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