2011 yz450f problem


25 replies to this topic
  • sik_m8

Posted January 08, 2011 - 02:38 AM

#1

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hey guys i just brought a brand new 2011 yz450f. i havent had a problem with it until today. i was keen to go for a ride so i made sure i had fuel checked my oil and my radiator fluid and all was good. i started my bike to let it warm up then went and put my helmet on and came back 2 mins later and there was radiator fluid, steam and smoke coming out of the radiator overflow. i turned off my bike straight away let it cool down and checked the radiator and it was dry as a bone. what can cause this 2 happen? this is a brand new bike with only 2 hours and 29 minutes on it

  • Thumper38

Posted January 08, 2011 - 04:21 AM

#2

Idling to long would be my answer!

  • pembell

Posted January 08, 2011 - 04:56 AM

#3

Idling to long would be my answer!


That was my initial thought too! They don't like to stand still....

  • dvn

Posted January 08, 2011 - 05:02 AM

#4

+1. A new tight engine and idling too long = boil over. Fill 'er back up with coolant and ride it!

  • YamaLink

Posted January 08, 2011 - 05:36 AM

#5

Reminds me of the first time I had a car with air conditioning. Came home. Turned car off. Came back hours later to drive it. There's a giant pool of fluid under my engine!!! ***?! Say what? Oh, that's normal?

And it's normal if the Yamaha or most any other liquid cooled bike is left running while not moving to spew its guts.

  • EARL1995HONDA

Posted January 08, 2011 - 05:57 AM

#6

thats a joke..id be pissed after paying $$$$ for a new bikeand it breaking

  • pembell

Posted January 08, 2011 - 06:33 AM

#7

thats a joke..id be pissed after paying $$$$ for a new bikeand it breaking


Nah, it's not broken. Just overheated.

  • dvn

Posted January 08, 2011 - 11:16 AM

#8

thats a joke..id be pissed after paying $$$$ for a new bikeand it breaking


It's not broke!:smirk: Leave any modern liquid cooled MX bike running too long while sitting still and it will boil over.

  • EARL1995HONDA

Posted January 08, 2011 - 02:32 PM

#9

ok ah stupid me:banghead:

  • sik_m8

Posted January 08, 2011 - 04:51 PM

#10

it was only ideling for about 2 mins if that? my 08 cr450f never done it

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  • grayracer513

Posted January 08, 2011 - 05:11 PM

#11

Two minutes is way too long.

  • sean3239

Posted January 08, 2011 - 06:43 PM

#12

It's not broke!:smirk: Leave any modern liquid cooled MX bike running too long while sitting still and it will boil over.


especially when they are new!

  • dalonar

Posted January 08, 2011 - 07:17 PM

#13

with no fan to pull air through the rads how is the engine supposed to transfer heat? 2 minutes idle will bring the bike to a very high temp. being new will only make the problem worse

  • sik_m8

Posted January 08, 2011 - 08:04 PM

#14

alright so it was ideling for to long. how long can the engine run without radiator fluid before it starts cooking. my bike has always had a load knock in it aswell and its louder now. going to take it back to yamaha monday morning just to be safe

  • pembell

Posted January 08, 2011 - 11:28 PM

#15

Two minutes is way too long.


A rule that applies to so many things in life....:smirk:

  • motojase316

Posted January 09, 2011 - 02:12 AM

#16

I had a 2010 now the 2011 yz450f, and live in the heat of tropical North Queensland, I idle for periods over 2 minutes regularly and don't boil over a drop. Our local track 30 second board guy is about 3 minutes too nad nothing lol.

So I would be looking deeper mate than just idle too long...

  • NEKOOHC

Posted January 09, 2011 - 02:41 AM

#17

2 min is waaaay too long

its your bike and your money !

  • motojase316

Posted January 09, 2011 - 05:17 AM

#18

I run engine Ice too, Not in the habit of long idle periods but when i do, i don't boil over...

  • sik_m8

Posted January 11, 2011 - 01:57 AM

#19

I had a 2010 now the 2011 yz450f, and live in the heat of tropical North Queensland, I idle for periods over 2 minutes regularly and don't boil over a drop. Our local track 30 second board guy is about 3 minutes too nad nothing lol.

So I would be looking deeper mate than just idle too long...


really mate? i live in cairns... i took it back to yamaha and the mechanic said the only thing they can think of is that the radiator cap wasnt on properly which i recon is bullshit

  • ChillyKTM

Posted January 11, 2011 - 06:40 AM

#20

my 08 did the same thing when left idling...didnt lose all the fluid but half , and it was left for only 2-3 min as well ...No Big Deal





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