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testing wireing

Discussion in 'XJ Modifications' started by xjpile, Oct 23, 2009.

  1. xjpile

    xjpile New Member

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    im not getting any spark on my 81 xj750 seca. when i turn it over should i be getting power from the stator and or pick up coil? where should i start to look for the solution to no spark. thanks
     
  2. ktcubed

    ktcubed Member

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    Make sure you have a fully charged and functioning battery first. If you don't, it can turn the bike over (rrrrrrrrr) without enough juice left to spark.
     
  3. xjpile

    xjpile New Member

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    battery is new and tested perfect still no power from p/u coil or generator, stator
     
  4. Robert

    Robert Active Member

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    You need to test the sidestand switch and make sure it is passing the voltage when it is up. It is part of a convoluted safety system that includes the clutch switch and a relay so wander through that system as well (the sidestand switch is a known problem, I have to clean mine out at least once a year).
    Check your fuse box straight away. If you have an original, get it replaced. If your ignition fuse is funky, it may be your issue. If you have replaced it, test for voltage at the coils. No dice, head to the TCI. Ensure it is getting voltage as well as a pulsed 12v from the pickup coils. If both voltages are present, your TCI is in need of some TLC. If you don't have voltage there, head to the kill switch and make sure it is passing voltage.
     
  5. streetmaster

    streetmaster Member

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    WOW, which of thiese items would be more likely to couse a brand new battery to go stone dead over night, even if, after a fully charged battery starts the bike right up. But only to have a drained battery the next day. :idea:
     
  6. ktcubed

    ktcubed Member

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    Perhaps you turned the key back to far when parking it. That turns on the tail light and would drain a battery overnight. You can check for drain with a multi-meter. With the battery charged and the bike off, connect the meter in series with the battery (post to meter, meter to wire that you disconnected from the post) set to amps (current) and see if any is moving. If it is, then you got a leak. (Check from both sides of the battery with the other side still connected, if it reads on both, then your leaking to ground, if not, then it ain't coming back and your leaking to "space").
     
  7. streetmaster

    streetmaster Member

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    Yeah, maybe i'll just put a new ignission in it, since the bike is hitting 30 yrs old.
     

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