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tvrjohn

Header pipe glowing RED

7 posts in this topic

Hi

Can anyone advise why my WR450 header exhaust pipe should glow red hot at just over tickover while stationary in a closed garage ?

Could it be tappet clearance issue ?

Also how can you tell if the rear shock needs a gas refill ?

Cheers

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If your header pipe is glowing red it means your rear shock is low on gas.

I thought it was because the muffler bearing needed lubed.

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Pilot jet is clogged...mixture at idle very lean. Remove float bowl, clean jets, reassemble, ride. (ok, that's what I found the last time the header on my 450 was glowing).

I'll bet it didn't start very easily, and didn't idle well--maybe you had to have the choke ON even though the bike wasn't cold. If so, its definitely a clogged jet.

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My header glows red if left idling for more than a minute. My jetting is perfect, it starts easy (1-2 kicks hot or cold), idles well and doesn't bog. If it doesn't glow when riding it and it starts and runs well don't worry about it.

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