I answered this in the other posting you made,
please do not multiple post in different areas, for the same problem... it creates confusion, and is not conducive to getting you an answer that you want...
for convenience, I copied and pasted my answers from the other posting, here... best of luck.
hello every body.
i am new here and send you all greetings from the uk.
i obviously own a gtr1000 which ive had since February 2016. mostly used for work and odd trip back home to see family...
unfortunately it has been off the road since about july. i brought it as a cheap run around but needed some work when i got it for the mot, however happily it worked fine and got a ticket..
but since july, ive had to replace coils and leads and plug caps, mostly because of an intermittent running issue, best way to describe it is it drops a cylinder when your riding and loses power.. had to also buy a repair kit for the carbs, float needles, seals, idle needlles that sort of thing.. after doing all this, it ran lovely on tick over, sat on its stand.. but as soon as you ride of up the road, it loses power..
Now, i have checked fuel flow, air flow an spark. all ok..
but on one occasion was running the bike on idle, an after maybe 5 minuets the rev counter needle dropped to zero and the ecu/cdi unit burnt out, smoke an all.. not had that before, ever... anyway managed to get another unit.. put it in, same thing.. except i switched it off as soon as i knew there was still a problem.. well the bike wont run for more then 2 or 3 minutes now befor dieing...
as you can probably tell im totally at a lose.. really in need of technical help here!! any advise anyone has would be great.
Do i need to be looking at an electrical component thats maybe failing? im totally confused buy the rev counter needle dropping to zero before the bike dieing.. but switch off the ignition and on again the bike starts straight away...
Help! please!
Don
you did a lot of parts replacements, and that makes things a bit complicated to try to pin down exactly which item was the culprit.. but I'll attempt based on what you have written...
first off, when you replaced the plug wires, and caps and such, did you use wires with a "stranded wire core", or some other "carbon core type" as used on most cars? Carbon core wires cannot be used on this, or any motorcycle... they require a true stranded internal solid wire.
Did you press the plug cap firmly onto the wire, and continue keeping pressure on it while threading it onto/into the wire's core, which is required, as the internal "pin" is actually threaded, and must be screwed into the core... about 13mm..
If you did not do this, and only "pushed/forced" the cap onto the wires ends, in an attempt to make the piercing attachment, this is a major fault point. It would also effect the other ignition components...
Also, look closely at the left hand coil (as seated on bike), and find the black wire with yellow stripe, which attaches under a coil retainer bolt.. make sure this is there, and intact, and not a compromised connection... the point you made about the tachometer issue is telling me that wire is not well attached...
the combo of both the things i'm pointing out will make a serious effect, and as I've never "not done these points", I cannot say for sure if it would cause severe damage to the CDI unit, but I'm sure its possible...
so, make sure the wires installed are a stranded solid wire core, the caps are the correct OEM style, with the resistors intact, and not some "autoparts store car parts", and make sure the grounding wire, the Black/Yellow one, is attached to that grounding point on the coil mounting bolt...