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No spark

T

TWSERVE

New member
I Have a Mariner 6oHP outboard engine, but have no spark:confused:. I don't know what yr my engine is can anyone tell me this from plate code 675 303253 made in Japan.
It was running fine last yr. i have payed someone to come and check it out for me and they told me i needed a new CDI unit, couldn't find one in the UK so have bought one from America, which cost me £175.00 :( rushed over to my boat to put this on and still no spark. Has anyone got any Tips of testing all the things it could be? I would appreciate any help at all as i'm really stuck as to what to do now. The boat turns over lovely but just dont have any spark, i have cleaned all Earth connections and have bought a new Kill switch, Ignition switch seems to be fine. I don't know how to test CDI and Rectifier, i can use a multimeter.
i HAVE REPOSTED THIS AS FOR SOME REASON POST HAD GONE.
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That motor makes its own energy to operate the ignition, so ignore the rectifier and the rest of the charging circuit.

Do this:

1. Find the black with a yellow tracer wire on the switch box and disconnect it. Then test for spark (all plugs out and grounded to the block).

2. If yes (you have spark), cut the wire going to the tilt switch (black with a yellow tracer), tape it off and test for spark again, but with the black/ yellow wire reconnected to the switch box.

3. If yes, go boating. If no, disconnect the remote controls electrical connection and try again.

4. If yes, you have a short to ground in the keyswitch area.

If no spark at all when starting the above testing, Remove the red/ blue wires from the switch box and test for continuity. If there is some, disconnect the four wires coming from the trigger coil (brown, whte, violet and black) and test for continuity. Black and the others must show continuity.

If the stator and trigger coil pass the above tests, the switch box is shot.

Jeff
 
Hi Jeff Ive spent most of my day trying sort out this engine. Some of the wires are different colours. There is no Violet wire and when you say switch box do you mean CDI Unit? also when you say tilt switch, do you mean Kill switch? Ive written in Bold under what you say as to what i'm not sure about.

That motor makes its own energy to operate the ignition, so ignore the rectifier and the rest of the charging circuit.

Do this:

1. Find the black with a yellow tracer wire on the switch box and disconnect it. Then test for spark (all plugs out and grounded to the block).

(i did this still no spark, do i put the wire back after test one)

2. If yes (you have spark), cut the wire going to the tilt switch (black with a yellow tracer), tape it off and test for spark again, but with the black/ yellow wire reconnected to the switch box.

3. If yes, go boating. If no, disconnect the remote controls electrical connection and try again.

(Do you mean the sensor that is connected to Gear lever on Engine that stops you from starting if in gear?)

4. If yes, you have a short to ground in the keyswitch area.

If no spark at all when starting the above testing, Remove the red/ blue wires from the switch box and test for continuity. If there is some, disconnect the four wires coming from the trigger coil (brown, whte, violet and black) and test for continuity. Black and the others must show continuity.

(Could not carry out this test as i was unsure about wire colours as they are different)


I have drawn a diagram of Junction box where all the wires connect.

If the stator and trigger coil pass the above tests, the switch box is shot.

I have attached the wiring diagram. boat wire 001.jpgThanks Ted
 
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Is that Mariner a two cylinder? If so, I apologize: I automatically assumed it was a triple.

Jeff

The Tilt switch (if it even has one) is on the motor. It kills the motor if it kicks up over a log. One wire from the switch box (CDI unit) goes to it.
 
You have a Yamaha built Mariner.A carbon copies of Yamaha's older models.And it's a '79 by that number.So if you got a Mercury/Mariner,I'm afraid you have the wrong CDI box. There is a 20amp fuse somewhere in and around the rectifier,have a look at it. In the mean time I'll try and dig up a wiring schematic.
 
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