2012 WR450 no spark

Hi Folks. I installed a 4 gallon tank on my bike, pretty simple job.

 

The bike has very low miles and worked perfectly before the tank swap.

 

No spark now, the bike hasn't run since the swap. Any ideas?

 

Thanks

 

Frosty

Does anyone know if power to the ignition coil is cut of the fuel pump is unplugged, or exactly how the lean angle sensor affects the power to the coil?

does the engine primes (pump)

any connectors (ground) loose..on the ignition coil?

does the engine primes (pump)

any connectors (ground) loose..on the ignition coil?

 

Yes, the fuel pump spins up normally. All coil connections that I can see are perfect, and I removed the coil and cleaned the mounting tabs to make sure to get a  good ground. I removed the plug cap last night and held the wire near the frame and got a very weak spark

weak spark should not be an issue,

on my last yammie XT it had a spark that was barely visible..

 

have you been working on other parts cdi (ecu)?

otherwise start measuring..

if all the values of the coil/ generator are ok..

weak spark should not be an issue,

on my last yammie XT it had a spark that was barely visible..

 

have you been working on other parts cdi (ecu)?

otherwise start measuring..

if all the values of the coil/ generator are ok..

 

The bike is inside, and in complete darkness  there is no spark from the plug and a barely visible spark with the wire near the frame. I was hoping for something simple -  that I bumped a sensor that caused this.  Of course it could just be a coincidence that this happened at the same time I changed the tank. I didn't work on anything else, just the tank. I'll get the meter out. 

What ended up being the issue I'm currently dealing with the same sort of thing I have replaced my coil and spark plug and I'm waiting on a new plug cap as my coil shows nothing with the plug cap on but good readings without the plug cap. 

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