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Hi there, new to the forum and hopefully sorting out an issue with my outboard
First a bit of history and where i am up to
Last time I was out she decided to run on only three cylinders
I changed the plugs when I got home.....still only running on three
I did a compression check and 140 on all cylinders
As part of the whole service and diagnostics I had a carb kit, rebuilt the carbs, new water separator and fuel bulb, these were all items I was going to address prior to the misfiring issue.
So now moved onto the coils, carried out resistance readings on all four, the same at 0.6 ohms, HT leads three identical number 4 was a long way off the others, so assume a new coil
So now try to start (this is over a few weeks)
Nothing........No spark at all on any 4 cylinders
I checked kill switch circuit that checks out
Removed the white wire from CDI just to double check...Nothing
Removed the blue jumper wire..Nothing
I have tested the stator windings both for resistance and voltage with a Fluke and DVA and all in spec
I have tested the Pulser coils again for resistance and voltage and again in spec
The only thing a have found as according to CDI Yamaha Troubleshooting guide is I believe testing the 4 trigger wires to ground whilst cranking i should have 2.5V minimum........I have nothing, albeit as I said testing between the pulser coil windings the readings are in spec
Am i on the right track ?
Am I looking at faulty CDI or Pulser coils or perhaps missing something obvious ?
Can someone throw some light on this
Much appreciated
Love the forum
Cheers
First a bit of history and where i am up to
Last time I was out she decided to run on only three cylinders
I changed the plugs when I got home.....still only running on three
I did a compression check and 140 on all cylinders
As part of the whole service and diagnostics I had a carb kit, rebuilt the carbs, new water separator and fuel bulb, these were all items I was going to address prior to the misfiring issue.
So now moved onto the coils, carried out resistance readings on all four, the same at 0.6 ohms, HT leads three identical number 4 was a long way off the others, so assume a new coil
So now try to start (this is over a few weeks)
Nothing........No spark at all on any 4 cylinders
I checked kill switch circuit that checks out
Removed the white wire from CDI just to double check...Nothing
Removed the blue jumper wire..Nothing
I have tested the stator windings both for resistance and voltage with a Fluke and DVA and all in spec
I have tested the Pulser coils again for resistance and voltage and again in spec
The only thing a have found as according to CDI Yamaha Troubleshooting guide is I believe testing the 4 trigger wires to ground whilst cranking i should have 2.5V minimum........I have nothing, albeit as I said testing between the pulser coil windings the readings are in spec
Am i on the right track ?
Am I looking at faulty CDI or Pulser coils or perhaps missing something obvious ?
Can someone throw some light on this
Much appreciated
Love the forum
Cheers
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