Iridium spark plugs running lean?

Posted by icerigger on
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Iridium-spark-plugs-running-lean-tp4043769.html

I just switched to iridium plugs this spring and I like them a lot. But I just pulled them to check on their condition and it looks like I'm running lean, there's white ash on the plugs.

Is this normal? I don't recall anyone having to rejet to use iridium plugs.

No other changes to the bike over last year and the regular plugs were a nice toasty brown when I took them out. Carbs and jets are all stock.