I just bought a 2009 ARGO Avenger 750EFI....it would not start the other day....cranked nicely, but no explosion, so I took one plug out to check for spark....when I turned the key it tried to start on the other cylinder??

Do you know why this could have occurred?? I always like to know why with this machine as I rely on it to get me home when I am deep in the bush.

So I ended up replacing both plugs with new Champs RC14YC.....do you use these or recommend others??

The ARGO suggested Champs did not work for me in sub zero temps on my vanguard and bigfoot....I switched to NGK's and all was good.

Your feedback on this is much appreciated.