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Tan, MerCruiser Certified Technician
Category: Boat
Satisfied Customers: 10898
Experience:  40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.
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I have a 1998 225 Ocean pro (model # J225RXEEN )... I have a

Customer Question

I have a 1998 Johnson 225 Ocean pro (model # J225RXEEN )... I have a (NO SPARK) condition and would like to know the Proper diag process
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: No spark on a 98 Johnson 225 ocean pro
JA: Is there anything else the Marine Mechanic should be aware of?
Customer: No , Just no spark ..thanx
Submitted: 11 months ago.
Category: Boat
Expert:  Tan replied 11 months ago.

Hello Gary. My name is Tan.

Lets start with disconnecting the black/yellow wires from the power pack. Do you have spark now?

If no spark we will need a peak reading DVA adapter or an ohm meter to do some testing. THe ohm meter isn't as accurate as the DVA adapter or a peak reading volt meter.

Post back with findings.

Customer: replied 11 months ago.
Hello Tan, I want to thank you in advance for your help !!!!
I don't know what a DVA adapter is but I do have a (cheap) ohm meter
I also have disconnected the black/yellow wires from the power pack (no spark)
Expert:  Tan replied 11 months ago.

Ok we can try the ohm meter. We need to disconnect the brown and brown/yellow wires from the power pack and test between the brown and brown/yellow. What is your ohm reading. You will have 2 sets of brown and brown/yellow. Test between both sets.

You will have to unbolt the power pack to get access to these wires.

Customer: replied 11 months ago.
I have check the ohms on both plugs (brown/brown yellow) coming FROM the power pack
I tried 20m, 200k,20k,2000,200, all position ( 1 .) although 20m starts with a large number but quickly go down to (1 .)
Customer: replied 11 months ago.
with the powerpack grounded (black wire on top of power pack) @ 20m it reads 8.85 or the right (standing on the boat looking at the stern ) and on the left it reads 11.80
Customer: replied 11 months ago.
all other positions still read (1 .)
Expert:  Tan replied 11 months ago.

We need to measure the wires coming from the stator. Brown to brown/yellow then each brown and brn/yel to ground. Red test lead to brown and black test lead to ground.

Customer: replied 11 months ago.
wait don't call
Customer: replied 11 months ago.
I hit the call button by mistake
Expert:  Tan replied 11 months ago.

Ok I'll wait.

Customer: replied 11 months ago.
on the stator brown to ground (1 .) other side (1 .)
brown/yellow (1 .) other side (1 .)
brown to brown/yellow (0.45) other side (0.45)
all with ohm meter set to 20m
CORRECTION coming from powerpack 11.43 left
11.61 right with ohm meter set to 20m
(pilot error , sorry)
Expert:  Tan replied 11 months ago.

The spec is(###) ###-####ohms.

Are the magnets still attached to the flywheel?

I'm going to say the stator is bad.

Customer: replied 11 months ago.
The magnets are still attached and there is no cracks or chips
Am I using the correct setting on my Ohm meter ??? ( 20m)
and so I'm clear ( the power pack is good ) !!!
Expert:  Tan replied 11 months ago.

There is no way to know if the power pack is good or bad. We can only test the inputs stator and timer base. The manual give the scale to be Rx100.

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