Hey guys, thought i'd give this thread a bump instead of making another as it seems to be covered a few times and fewer pages to read and cleaner.
I have a 2010 GT650R efi and seems to have the same lack of spark/power... I just brought it and so far replaced coils leads and plugs from a ninja 250, spark plugs and gapped to .07. Tested battery voltage - showing 12.5v off - 12.5v on - 12.5 revving over 5k.
Lack of power all through rev range
Will randomly kick in for a split second on both cylinders or better spark.
Feels like it's not getting enough spark to front cylinder
This is my first bike and got it for a steal so Im happy to spend some dollars but also want to learn as I go