2012 kx 450f

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2/17/2021 6:50 PM

Hey guys I’m hoping I can get some help here! I have a 2012 kx 450f that I purchased a month ago and I’m having a heck of a time trying to get it to start. I replaced the spark plug,new stator, new neutral safety sensor, new capacitor, new coolant sensor. Also a new top end and cylinder headed. Checked the valve clearance multiple times. Also checked the timing multiple times. I’ve put 12v up to the bike and still no start. I’ve pulled the plug and it’s definitely getting fuel but for some reason it’s not getting spark??? Any help or ideas would be awesome. Thanks in advance also checked all the connections and put electrical grease on everything.


2/17/2021 7:12 PM

Plug cap?


2/17/2021 7:14 PM

I’ve checked it with the ohmmeter and it tested good. I’m lost with this bike


2/17/2021 7:19 PM

test your fuel pressure, test leakdown.



2/17/2021 7:31 PM

Is your ignition/ spark plug wire grounded?


2/17/2021 7:56 PM

I’ve checked that and made sure. I’ve also pulled the plug and there was lots of fuel, so it’s definitely getting fuel but no spark. But I’m getting another bike to try some parts to see if I can figure out the problem. I’ll let you guys know if I figure it out


2/17/2021 7:58 PM

I’m thinking it’s the ecu but I could be wrong. Just being that it won’t even run even with 12v put up to the bike