idling hot?

[99raptor]

hadn't run my 450 for a week or so[miserable weather] so i fired her up and let it idle for 10 min or so. noticed a puddle of coolant and like to have died.pulled the skid off and cleaned it all up to see where my problem was. restarted it and climbed under the bike about 3 min one of the pink lines[i assume from the radiator ]started spitting coolant.is this normal for a yz to run hot after so little idle time?better just run it around the block than just sit to promote some air flow thru the radiator?

[SureBlue]

Let them idle for over 3-5 minutes and they all puke coolant. ?

[bluerider450]

yeah fourstrokes run hot so you should try and keep air flowing through the radiator and it could also be running lean

[99raptor]

thanx alot now i'll be able to sleep tonite

[grayracer513]

Yes, it's totally normal. I might as well also tell you now that 2-3 minutes of idling will cause your head pipe to glow a rather pronounced shade of red that you will one day notice if it's a little bit dark out. Four-strokes, especially those with their combustion chambers packed full of valves, are like sharks; they need to keep moving. ?

[Scooter426]

normal , just keep her movin when you can. These bikes hate to sit still and idle.

[condog_aus]

Thats a seriously good way to cook an otherwise perfect engine. The manual states not to let it idle more than a few minutes without good airflow.

[SureBlue]

I just hope you haven't blown your head gasket and damaged the piston rings already...

[Fastest1]

Very unlikely at no load, hot yes, but no real damage!

[Doug.]

Do not let a four-stroke idle for more than 3 minutes, coolant will spew out the overflow if you do.