troubleshoot a no spark issue trx350d 1987

[bfrevis 0]

also just disconnected fuel pump, fan, and still see black/yel as ground.

I look for 12 volts at cdi Plug Blue/yel wire and no voltage with key on.

Blue/Yel ohms out at 341 ohms.

Black/Yel not ground if coil wires are removed.

 

[Melatv 792]

Stator is ok with 0.6 ohms

 On the run stop sw follow the BL/W wire along to a single connector -- unplug it and place a wire from that connector to the positive post of the battery -- turn key on to start

[bfrevis 0]

The kill switch (run Off) was broken so I taped up the 2 wires so they make no contact with each other or ground.  Before I keep going will that kill switch modification work.

 

[Melatv 792]

On the BL/W wire that you have taped up is there 12 vdc on it with key on?

Edited July 20, 2023 by Melatv

[bfrevis 0]

Dont think so i will check now.

[bfrevis 0]

Yes there is 12 volts at black/grn wire

Nothing at blk/white wire.

[bfrevis 0]

Again run/stop switch was broken so i just isolated these two wires. 

Is that the problem?

[bfrevis 0]

Yes there is 12 volts at black/grn wire

Nothing at blk/white wire.

[bfrevis 0]

That kill switch black/white wire is the same black/ white wire going into cdi through 2 pin connector.

Is that why i am missing my 12 volts for the cdi.???

Edited July 20, 2023 by bfrevis

[Melatv 792]

5 minutes ago, bfrevis said:

Yes there is 12 volts at black/grn wire

Nothing at blk/white wire.

What's black/gm wire

2 minutes ago, bfrevis said:

That black/white wire is the same black/ white wire going into cdi through 2 pin connector.

Is that why i am missing my 12 volts for the cdi.???

Yes you have to have 12vdc on that BL/W wire

[bfrevis 0]

OMG is that it? I just splice the wires together and done?

[Melatv 792]

So it fired up -- 

[bfrevis 0]

I am waiting for a gasket since i took out the stator. I will try in a few days. You have been very helpful. 

This really had me stumped.

Thank you.

[bfrevis 0]

After putting Stator back in the No Spark issue is still a problem.

Brad

[Melatv 792]

When you put the 2 wires together you had spark?

[bfrevis 0]

No never had spark. When i put tge 2 wires togerher i got 12 volts at the cdi plug. But never any spark.

[Melatv 792]

Ok -- unplug the CDI and the test the BL/R wire on the connector you should read 50 - 200 Ohms to ground

[bfrevis 0]

No black/ red wire

I have green/ red

Black/ white

Black/ yel

Blue/ yel

Green/ white

These are the 2 plugs going into the cdi.

I see a black/ red wire nearby and it has 512 ohms to ground.

[bfrevis 0]

Is there any way you could call me?

Brad 925-786-2650

[Melatv 792]

Does your atv have a fuel meter on it?

[bfrevis 0]

No

[Melatv 792]

Ok -- are you sure the ATV is 87 -- are there any tags on the atv saying what it is? I will see if I can find a print with 5 wires on the cdi with the wire colors you gave me

[bfrevis 0]

Yes positive 1987 

[Melatv 792]

Ok -- I will see what I can find and get back to you

[bfrevis 0]

The old cdi has a decal 

HA 7

C1537