Fletch1312

Member
Nov 3, 2020
1
0
Yesterday I was riding my 2014 Kx250f and while I was riding in 3rd and 4th gear holding half throttle there was a lot of crackles and back fires so I put the bike away and noticed that my header pipe was glowing red so I turned my bike off and then a bunch of coolant leaked out. Any possible reasons this could of happend and how I can fix the back fire. Thanks
 

RM_guy

Moderator
Damn Yankees
LIFETIME SPONSOR
Nov 21, 2000
6,992
190
North East USA
I'm no 4 stroke guy but I'll give it a shot.

Was the coolant leaking out of the overflow? If so it was probably running hot, maybe lean. I've seen header pipes on 4 strokes glow red before so that's somewhat normal but with the backfiring and coolant overflow it would deserve some more investigation.
 

Okiewan

Admin
Dec 31, 1969
29,531
2,217
Texas
It's pretty common for a header pipe to glow. Unless you are riding at night (or close to it) you probably just never noticed it.
 
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