2005 FZ1 starts dies immediately

[stevelewman]

I'm new to this forms thing so I don't know if I'm posting this in the right spot not very computer savvy anyhow when I turn the key on the tack will go to 9,000 RPM and stay for 2 seconds return to zero for 6 seconds and back to 9,000 again it did it at least 10 times before I turn the key off when I start the bike it runs for approximately one second and then shuts off I am a mechanic but not a bike mechanic so to speak doesn't seem like it's gas to me I believe it's in the ignition I unplugged the tip sensor made no difference at all any ideas would be appreciated thanks again

 

[Blue Flash]

First of all, if you can get your hands on an OEM Repair manual, that would be your best source of information on diagnostics. Even the Clymer manual I had was missing this information. Just doing a quick search for "2005 Yamaha FZ1 Repair Manual" I found this one that you can download for $15. I can't say anything about it from personal experience, but the views shown do look like an OEM manual. https://www.tradebit.com/filedetail.php/221274514-2005-yamaha-fz1-motorcycle-service-manual?a=506906

I have a different version that may help. Here is the information I found in the one I have. I hope this helps!!
First, what do the tachometer codes mean?

The 9000 rpm indication shows it is related to the "Emargency" stop switch.

Diagnosis:
"Is the wire harness OK?" sounds daunting, but at least they highlighted the specific wires to check for continuity.



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