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1986 FZ600 starting problem


Nintruder
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Hello,

I have a 1986 FZ600 and it was running great for awhile, but it started acting weird when I came home this weekend to ride it. I started it up last night, and it ran fine, but after a few minutes it just went dead, even all of the idiot lights and tach/speedo lights went out with the key still in the "on" position. I then turned the key off and back on again and the lights came back on and started right up again. I then go to ride today and it does the same thing where it just goes dead, and I tried turning the key on/off again several times with no luck. There is just no sign of any power to anything when the key is turned on. Can anyone please help me or steer me in the right direction? Thanks!

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Hello,

I have a 1986 FZ600 and it was running great for awhile, but it started acting weird when I came home this weekend to ride it. I started it up last night, and it ran fine, but after a few minutes it just went dead, even all of the idiot lights and tach/speedo lights went out with the key still in the "on" position. I then turned the key off and back on again and the lights came back on and started right up again. I then go to ride today and it does the same thing where it just goes dead, and I tried turning the key on/off again several times with no luck. There is just no sign of any power to anything when the key is turned on. Can anyone please help me or steer me in the right direction? Thanks!

a quick check is that the battery connection are tight. a couple of bikes i have had over the years have had these symptoms and it has been the terminal connections being slight loose.

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Whats the battery open-circuit voltage after the bike has cut-out? if it's less than 12v then maybe the battery has had it. sometimes the battery will appear to be okay, but the cells are knackered.

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I have no way of being able to test that because the bike wont even start now. I do believe my friend and I have diagnosed the problem, we think the flasher relay is junk, and it needs a new one. Could this be the problem?

well if its drawing power when it shouldn't do or its drawing to much then its possible. the first is more likely. surprising its having that effect, but bike electrics can be very sensitive to constant small current draw.

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Where would the keyswitch be located?

"ignition" switch to some. I would be checking ALL connectors from ignition switch to battery & anything inbetween. Something is loose for sure.

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