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Lt80 spark problem

  #1  
Old 12-11-2018, 10:58 PM
Weekend Warrior
Thread Starter
Join Date: Nov 2018
Posts: 4
Default Lt80 spark problem

My lt80 project I thought was coming to a end but I can't get spark but only after i let off the starter switch. Brand New cdi, stator, and ignition coil. I haven't tested any of them but can. Someone told me a parking brake problem but it is cranking right?
Video is attached of problem.
 
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20181211_211439.mpg (3.19 MB, 6 views)
  #2  
Old 12-12-2018, 04:52 AM
Extreme Pro Rider
Join Date: Oct 2013
Location: Lancaster England
Posts: 3,522
Default

This is a strange fault that affects a lot of bikes with CDI ignition. Never been able to find out what causes it. As the ignition circuit is completely separate from the battery setup, the starter "draw" should have no affect whatsoever on the ignition, yet your video shows it happening. I guess some strange earthing fault may stop power going through the earths, check them, and disconnect the kill wire. If that doesn't work, substitute the old ignition parts back on the bike, one at a time, and let us know which fixes the problem.
 
  #3  
Old 12-12-2018, 09:10 AM
Extreme Pro Rider
LT80 Expert
Join Date: Mar 2001
Posts: 7,826
Default

Try a extra ground wire from motor to frame.
 
  #4  
Old 12-12-2018, 09:31 AM
Weekend Warrior
Thread Starter
Join Date: Nov 2018
Posts: 4
Default

Thanks guys really - Later ill try and run a extra ground and check other grounds also
 
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