Running hot!!



1 reply to this topic
  • nozzlejockey

Posted August 14, 2001 - 07:14 AM

#1

I was riding yesterday and my 01' 426 was leaking radiator fluid out of the resv hose. I have recently had a top end done by the shop and was wondering if the timing could be off and causing it to run hot. This is a new problem. I have a small track at home and ride trails from home. I am a beginner and usually practice jumping on a 50' table top I built. I hit it about 30 times a day. I will appriciate any ideas!
Thanks guys. :)

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • sirthumpalot

Posted August 14, 2001 - 11:14 AM

#2

If you filled it to the top then it is normal for a little bit of coolant to come out as it heats up. It's also normal for an engine to run slightly warm during break-in, especially if they honed the cylinder.

That said, timing and jetting could make it run hot; if you're sure that it's overheating then it couldn't hurt to dobule check these.

If you're not sure that it's actually overheating then it may be worth your while to check the head gasget for a leak. A leaky head gasget can cause a loss of coolant through the radiator overflow hose. 2 simple (but not full proof) ways are to either fill up the radiator to the top, let it idle and look for bubbles; or you can ride it when it is warmed up but not hot yet and look to see if any fluid is coming out of the radiator overflow hose when you hit the gas. Hope this helps..





Related Content

Forums
Photo

Megabomb Fitment by 288yz450


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 1 reply
Forums
Photo
Supercross

Wilson the Blue Privateer by jetfuel


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  50 replies
Forums
Photo
Motocross

Thinking about Yamaha 250... by Arctic Pride


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  491 replies
Forums
Photo

Michigan Motocross Tires by 288yz450


Dirt Bike   Dirt Bike Regional Discussion   North
  • 1 reply
Forums
Photo

The "going back to the other darkside" adventure... by Monk


Dirt Bike   Make / Model Specific   KTM   250/350/450/505 SX-F & XC-F (4-Strokes)
  • Hot  113 replies
 
x

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.