[WickedOne]

OK.. So I have an 07 ZX10R... Changed the plugs with the same that were in there... sputtering... dying... backfiring BAD.. put the old plugs back in.. exact same shit... wasn't even having a problem before I changed the plugs.. Did I damage a coil or something?

 

[wildcats]

when my old gsxr was doing that it was the O2 sensor.... just a thought

 

[jblaze]

Well it sounds like one of them isn't firing causing it to sputter and then backfire. Yes either something isn't connected or one of the coils were damaged.

 

[WickedOne]

So I got her back apart.. start her up... backfiring.. dying... unplug the left coil while running and she starts purring again.. so thats the bad coil? I mean it shouldnt run better on 3 instead of 4 right?.. APPRECIATE A QUICK RESPONSE... store isnt open late if i can even find a coil that they dont have to order

 

[WickedOne]

Nevermind guys.. had the left side wires crossed.. yup.. Im a dumbass... shouldnt work on your bike when dead tired after riding all day

 

[jblaze]

Yeahr I was going to say if you unplugged one and it ran better then you crossed some wires.

 

[9R to 10R]

Nevermind guys.. had the left side wires crossed.. yup.. Im a dumbass... shouldnt work on your bike when dead tired after riding all day

Thats why you ALWAYS do one plug at a time

 

[Quick10]

Glad you found it.