1988 big bear 350 no spark

[88bigbear]

Bought a 88 big bear 350 4x4 took it for a run and lost spark, found it was stator so I replaced that then took it for a long run and it sat for 2 days and no spark again, this time stator tests good on ohms and voltage for source and pick up coils so I started replacing things including regulator, ignition, ignition coil and plug cap, spark plug and everything tests great including all safety switches until the orange wire for ignition coil from the cdi it only reads 3 volts so I replaced the cdi and still 3 volts, any ideas??

Edited Tuesday at 11:10 PM by 88bigbear
Forgot something

[Gwbarm]

 Welcome to the forum ! You have replaced everything spark related. I think at this point i would check out the start stop switch a little closer i have seen them cause more problems in the older Big Bears, only getting 3 volts out of the CDI couuld also be a ground issue, check all of your connections and make sure you are getting 12v to CDI. I have also noticed wiring harness issues also on the bears it been a long time since i have worked on a 350 but iknow on the 400s its easy to get misalignment of the pick up coil in fact the last one i worked on previous owner had it on upside down.

Probably not much help all i have for now, but im thinking about it. Just wanted you to know we are listening, but this is a tough one.

Probably not much help all i have for now, but im thinking about it. Just wanted you to know we are listening, but this is a tough one.

[88bigbear]

I honestly didn’t know the pick up coil could go in wrong but would that still be a problem as I had the bike for a run after I replaced it and it was great, spark Only died after parking for a couple days, Ohms test was good aswell on this pickup coil, I have most of the harness open Iv found a few gremlins and repaired but still no fix and tested the killswitch at the switch so maybe a problem further down in the wiring 

[Gwbarm]

Noi It would not run if the pickup coil was wrong line up would be wrong. The problem is you are only getting 3 volts out of the CDI , and you are getting the same with both CDIs i dont have a service manual to chase the wiring , but something is wrong there, make sure 12 volts is going in and make sure your CDI ground is good. The problem seems intermittant something electrical is not doing its job all the time. When you were riding it was there any hint of a running problem, poor idle, backfiring etc. or just wouldnt start after 2 days.