Valve problems



4 replies to this topic
  • Morten

Posted February 18, 2001 - 12:49 PM

#1

I bought a used 00 426 on the 17 of Feb (yesterday). I started up, and after 2 minutes the exhaust pipe turned into glowing red, like lava from a volcano. The engine would not idle, and when i was driving the bike is was not running very well. What is the problem? Is it something wrong with the ignition and have i done som serious damage by running it like this. I was running it for 30 minutes. Help.

  • yzf

Posted February 18, 2001 - 01:23 PM

#2

it is normal for the head pipe to turn red at idle, as for it running bad mabey you had the choke pulled out? or the hot start knob was pulled out ?

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

Posted February 18, 2001 - 01:28 PM

#3

The red header is normal. Probably start by cleaning out the carb. What noises are you getting?

  • MikeOK

Posted February 18, 2001 - 05:40 PM

#4

Here's what you do- you enter a night race, pull up to the gate and let it idle for a minute or two before they drop the gate. Right before they drop the gate point and look at your glowing pipe like it has you scared to death then when the 2-smokers around you look down at it you blast away and leave them wondering hehehe...

Seriously, the first time I noticed mine glowing it did scare me until I talked to some other owners who all said theirs did the same. Turns out that this bike just doesn't like to sit still and idle, also the head pipe is real thin stainless, so don't worry about it...

Mike

  • Guest_Guest_*

Posted February 18, 2001 - 06:02 PM

#5

You need to describe how it ran, with A little more detail.

Did it run like it had no power are was it making noise?

Mine would run realy hot and would have no power. because the cam gear slipped on the cam so you need to help us out with a better description.





Related Content

Forums
Photo

Megabomb Fitment by 288yz450


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

BIGBORE FOR YZ450F 2006? by Taattie94


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 5 replies
Forums
Photo

Snake pit oct 30th by The Anvil


Dirt Bike   Dirt Bike Regional Discussion   California
  • Hot  293 replies
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
Forums
Photo

2016 YZ450 by CaptainKnobby


Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 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.