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My 2007 yfz 450 exhast pipe glows red when running , what would cause this?

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It is not uncommon for stainless steel exhuast systems to glow under normal operation. This can be seen especially at night. occasionally a lean condition can cause this also. This could have been caused by blockage in the carburator jets and passages from sitting up, An air leak at the intake manifold(rotted,cracked manifold or simply loose clamps) or a hot start plunger that is stuck in the open position due to dirt in the plunger, a mis adjusted or froze up cable. If the radiator is full of coolant and it is not overflowing while running then it is not overheating. It will boil over from the overflow tube when it overheats.

Posted on Jan 14, 2013

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Posted on Jan 02, 2017

  • 293 Answers

SOURCE: changing engile oil 2007 yfz 450

the service manual is on this link .
http://www.scribd.com/doc/2634179/yzf-r1-manual

Posted on Nov 27, 2008

  • 1 Answer

SOURCE: Yamaha YFZ 450 engine serial number

im unsure but arent they on the sterering stem on a metal stamp or perhaps under the gear shifter I am unsure

Posted on Apr 10, 2009

ollie reece
  • 1167 Answers

SOURCE: I Have a 2005 rmz 450 and the front pipe on the

thats very very strange seems like your not getting the coolant there is ther coolant in the system and is there enough oil in the bottom also check oil filter replace if necessary get back to me

Posted on Sep 22, 2009

mxtras
  • 194 Answers

SOURCE: how do i remove and clean the carburetor on a 2005

The easiest way is to remove the seat and then remove the entire rear sub-frame - the airbox is attached to the subframe, so it will go with the subframe. Loosen the rear clamp on the intake boot. The sub-frame is only held on by three bolts so it's a piece of cake to remove.

Once the subframe is off, the carb will be wide open and easy to remove from there.

Posted on Nov 25, 2009

voodoomox
  • 1689 Answers

SOURCE: timing on 06 yamaha yfz 450

Here is the SERVICE MANUAL for your bike.

http://pdfdatabase.com/download_file_i.php?file=14074911&desc=Yamaha+YZ450F+Service+Manual+.pdf

Posted on Dec 26, 2009

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Glowing RED exhaust pipe


try a bigger jet or its going to cause some damage. You can pull the choke on to get some more fuel in to cool it .
Check that the cam timing hasnt been played with, some change the exaust cam by a tooth to copy yz specs, on top dead centre, there is a little arrow on each cam that lines up with the rocker cover surface

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I have a 2005 suzuki ltz 400 with exhaust and jet kit recently it started running not so good and exhast pipe glows cherry red any suggestions how to fix this problem or what i can be causing this problem


if its liquid cooled u may need fluid--too lean condition in carbs causes valves to overheat--watever u do buy a clymer manual or hav a pro look at the jets-try not to ride until

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2 Answers

Dripping coolant and pipe glowing red


The header pipe will glow red when you run it on choke, during warm up. This is normal while sitting. You shouldn't see that one you start riding it though.
The coolant drip could be just a dirty or failing radiator cap. My bike will push a little out if I completely top it off full. Hope this helps.

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My 450f was dripping coolant out the overflow and i looked over and my pipe was glowing red but the bike didnt take long to cool down once i stoped it


has any recent work been dont to the carburetor? sounds like its running lean,which will cause it to over heat and offen the pipe will glow

Jun 20, 2009 | 2003 Yamaha YZ 450 F

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