troubleshoot a no spark issue trx350d 1987

[Melatv 792]

Okay -- Unplug the CDI and make sure you have 12vdc at the connector G/W to BI/W when cranking over the ATV

[bfrevis 0]

Yes drops to 10.85 while cranking.

12.6 from battery while not cranking.

[Melatv 792]

Do you have a headlight on the ATV?

[bfrevis 0]

Yes works well.

[bfrevis 0]

Did not find a peak voltage meter at home depot.

Will order from amazon. Be a few days.

[Melatv 792]

Battery test --- place your meter on the battery -- take note of the battery reading -- leave meter on battery-- turn on head light for one minute and then turn off -- battery voltage should ramp back up to voltage before turning lights on.

[bfrevis 0]

Did not find a peak voltage meter at home depot.

Will order from amazon. Be a few days.

 

Read 12.77 volts

Headlight on along with fan and 2 tail lights.  Battery dropped slowly to 12.23 volts in 1 min.

Key off and battery immediately came back to 12.7

 

 

[Melatv 792]

Okay -- battery is good 

 

[Melatv 792]

Hi: One other thing to try may have high resistance -- unplug the CDI connector and remove the wire off the positive post of battery -- then put meter on Ohm scale -- check from the BL/W on CDI connector to the wire removed from battery -- should read zero 

[bfrevis 0]

It does read 0 on every ohm scale.

 

[Melatv 792]

37 minutes ago, bfrevis said:

It does read 0 on every ohm scale.

 

That's good

[RS990 20]

Did you find your problem??

[retro 4,049]

19 minutes ago, RS990 said:

Did you find your problem??

 

Hi RS990, do you have a 350D with no spark? If so start a new thread and include as much info as you can so we can help.

[RS990 20]

38 minutes ago, retro said:

 

Hi RS990, do you have a 350D with no spark? If so start a new thread and include as much info as you can so we can help.

No, I was just curious if he had solved is problem. I like those weird problems.