Anyone with a yfz450 had problems with header glowing red and backfiring. it sounds like a lean condition. i've heard of new bikes doing this at first. i just got it yesterday so i only got maybe a hour on it, trying to break it in right. im going to call the dealer tomorrow to see what they say. other than this the bike is SWEET. thanks

 

a few other have posted this thread...apparently the glowing is normal...don't know about the backfiring though..your the first i've seen mention that...

 

backfiring? = is the baffle still in? never heard of anybody's backfiring either.

glowing? = Normal, everyone's does that, especially when you got stainless headers like it has

 

mine never glowed although the exhaust header does put out some significant heat especially when your putting around on it or idling without any air to cool it. Never glowed red however.

 

Go out tonight after dark, warm up your bike then hold it at 1/4 throuttle for 1-2 minutes and watch it start to glow. We did that to the first YZ 400 we got back in 98.

 

I thought people were seeing them glow while riding them not doing some childish mindless thing such as your suggestion.. If I want to see a glow I'll just turn on the light at night.

LOL

 

[quote]
Originally posted by: MNRAP
[quote]
Originally posted by: YFZn
"childish/mindless", little overkill don't you think, anyway, was just giving a suggestion. They won't always glow while riding, do to air flow.