1998 DT115 (EFI) No Start

[Schoon32]

No start. No Spark. Checked stop circuits, checked OK. No power to primary of coils when cranking. Checked all the coils in the magneto they all check OK except the power source coil which appears to be open. This is a problem, circuit diagram indicates that the wires to this coil are B/R and G, I find these wires going into the magneto but in the tables where it states which wires to use to check the resistance of this coil, they say use B and B/R. Can not find a black wire going in to the magneto. Is this a miss print or is the B/R and G wires correct. Was trying to determine if this is the problem before I pull the flywheel.
Any help would be greatly appreciated, Thank you.

[Solarman]

I think your wire colors are the same as another post? (listed his post below.)
If no fire on any plugs, I would check the low condenser charging coil. See if your wire colors match these listed below, if not let us know, I can check my manual (I think it shows your motor? The 4 wires for these coils often are in their own 4 wire plug? Separate from the other charging coils.

condenser low side (green-black/red wire) 62-92ohms got 75
condenser high side (white/red-white/blue) 385-575ohms got 457

Good luck, post back when able.

[Schoon32]

I think your wire colors are the same as another post? (listed his post below.)
If no fire on any plugs, I would check the low condenser charging coil. See if your wire colors match these listed below, if not let us know, I can check my manual (I think it shows your motor? The 4 wires for these coils often are in their own 4 wire plug? Separate from the other charging coils.

condenser low side (green-black/red wire) 62-92ohms got 75
condenser high side (white/red-white/blue) 385-575ohms got 457

Good luck, post back when able.

Have a 6-wire plug with 4 of the above wires in it. green-black/red measures open circuit. White/red-white/blue measures 51 ohms. This connector also has 2 other wires, both black/yellow and measure 18 ohms. Have no idea what these are, they both go into the magneto(flywheel). Circuit shows them coming from magneto going to ECU. All the other coils in the magneto check OK except the power source coil and can not find the black-black/red wires to check it. Except as stated earlier, one of the condenser coils is open.
Thanks again for the help.

[Solarman]

If your condenser coil is open, then you won't get the motor to send the charge to fire three plugs. Is there any sign of the coil being damaged? Are your flywheel magnets still in good shape? If the epoxy that holds the magnets in place is cracked, then you should get out repaired, or replace it (my magnets came loose and ate my condenser charge coil).

The other two wires in your plug may go to the pulse coils/ timing coils, but your low condenser coil is the reason your motor doesn't fire.

Good luck. Post back when able if other questions.

[Schoon32]

Thank you. Will pull flywheel and check coils. Will let you know what I find.

[Schoon32]

Found a bad connection on one of the ignition coils(350 ohm). Was able to repair it and saved myself $500. Coil was good, just the connection at the coil.
Thanks for the help. Don S.