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GS850 with M-Unit not starting

  • Thread starter Thread starter caselat
  • Start date Start date
C

caselat

Guest
Hello all, I just recently redid all my electricals and routed everything through the m-unit. Everything seems fine, starter motor is turning over and plugs have spark.

When I let the bike sit for a while (a day or so) I'll get a little sputter of a start but never anything more than that. Carbs have just been rebuilt, bowls are full and everything was running well before I did this.

Could this possibly be a grounding problem? I know I need to run more grounds to the frame since the negative on the battery smokes a bit. Maybe the spark plugs are out of sync or something, not sure if that even makes sense.

I figure this has to be something electrical but I can't figure out what since there's spark. Anyone have any ideas?

This is an 80' GS850
 
".... since the negative on the battery smokes a bit. Maybe the spark plugs are out of sync or something, not sure if that even makes sense."

find out why it smokes a bit real soon. Make sure that you have plug wires on correct spark plugs. Sitting on bike, the left ignition coil fires 1 and 4 spark plugs, etc.
 
caselat said:
Hello all, I just recently redid all my electricals and routed everything through the m-unit. Everything seems fine, starter motor is turning over and plugs have spark.

When I let the bike sit for a while (a day or so) I'll get a little sputter of a start but never anything more than that. Carbs have just been rebuilt, bowls are full and everything was running well before I did this.

Could this possibly be a grounding problem? I know I need to run more grounds to the frame since the negative on the battery smokes a bit. Maybe the spark plugs are out of sync or something, not sure if that even makes sense.

I figure this has to be something electrical but I can't figure out what since there's spark. Anyone have any ideas?

This is an 80' GS850
Click to expand...

Smoke on or near a battery is rarely a good thing. There's a really bad connection or cross-connection someplace.

Start over. Disconnect everything, then hook up one thing at a time. You gotta isolate that issue.
 
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