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DT140 No Spark

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dsirkin

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"Hi - my DT-140 ran fine, then

"Hi - my DT-140 ran fine, then I let it sit for about 18 months. Now, No spark! WTF? I expected to clean the carbs, but......

Does anyone know what the neutral switch in the control unit is? it looks rusted, but I haven't pulled it yet.

THanks - David"
 
"David, the neutral switch cou

"David, the neutral switch could be your problem if it's rusted. It grounds out the ignition system unless you have the gears in neutral, to prevent starting in gear (for safety reasons).

If you can simply disconnect it and then check again for spark, that will quickly determine if that's your problem..."
 
"find the blue/red wire coming

"find the blue/red wire coming out of the motors cdi
pull it apart at the bullet, if you get sparky the nss is the problem"
 
"Hi -
THanks guys, but still

"Hi -
THanks guys, but still no luck. When I disconnected the neutral switch at the control box, the starter wouldn't even turn over (the wires were brown).

Just-in-time: I checked all the wires from the CID, no blue/red or blue or red. Actually, there were a couple that were accounted for - they went to the magnetos or the coils. The only unaccounted wires were brown, which stopped everything, (perhaps the kill sw from the control box) and black/wh which when disconnected didn't seem to do anything.

I am waiting for a wiring diagram to arrive, but if you have any other ideas, I would sure appreciate them!

Thanks -
David

"It worked great 'til it stopped!""
 
"<[img]"http://www.marineengin

"
happy.gif
OK, thanks JIT, I got it running. I disconnected the BL/WH from the CID, and it fired right up.
Now, if only I knew where this wire came from. I'll look for it in the control box. Could there be more than one neutral switch? The one I looked at with the brown wires is normally closed, so it isn't the one that grounds the ignition system.
I just had a thought....Is there a connection in the keyswitch for grounding the ignition when it is turned off? Seems like that would make sense. Well, off to grab a meter and continue the quest.
If anyone has any other ideas, please let me know! Thanks.
David"
 
yes you have a stop at the swi

yes you have a stop at the switch
try bypassing the nss first then go to the switch
 
"AND THE FINAL RESULT IS:

T

"AND THE FINAL RESULT IS:

The stop circuit in the keyswitch was keeping the ignition grounded out. This wire was BK/WH in the engine junction box. Disconnecting it allowed the engine to run. The keyswitch has to be replaced, else, I can't shut off the engine.

Also, the electric choke switch in the keysw is flakey at best, so the keysw gots to go!

Thanks everyone for your help -

David"
 
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