I eat my R6
Join Date: Dec 2014
Location: Southwest Ohio
Bike: 2008 Yamaha YZF-R6s Stock
Re: Bike Isnt Running Right
Reading ohms/resistance on my coils wasn't helpful. But we're talking a tiny .08 range in primary coil specification when all of your volt meters only read down to tenths of an Ohm, rather than Hundredths. I was able to spot my "bad" one by using a spark gap tester. Adjusted out to a HUGE gap, I was able to see that one wasn't able to consistently/reliably fire at the same gap that the other three did. They performed the same on all four wires, so I knew it wasn't the wire harness or the ECU.