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<blockquote data-quote="MY-BLUE-BEAST" data-source="post: 171909" data-attributes="member: 388">My brother has a 2003 WR450F, lately it has been acting up and having a few issues. 1st: It is crazy hard to start, after about ten or so hard kicks it finally starts. Electric start, Forget about it.2nd: once it is started it runs crazy hot. Just sitting on the stand running for about 30 seconds it is already red hot. 3rd: It doesnt idle, the adjuster doesnt work, the fuel screw doesnt work, it just wont idle. Here is what we have done:1st: We checked the valve clearances, no issue there, they are perfect. 2nd: Cleaned, cleaned and cleaned the carb still nothing3rd: Rejetted from stock jetting and up and stock jetting down, trying every jet imaginable. The plate on the front of the throttle slide is in the right spot, the timing is dead on. Is there anything we are missing? I am going to pull the carb off of my bike and try it in there just to see if it works, if it does then at least we narrowed it down. What do you think? Im already sick of the damn thing, and would appreciate the help. Thanks <img src="https://www.dirtbikeaddicts.com/static/images/smilies/thumb.gif"&nbsp; class="smilie" loading="lazy" alt=":thumb:" title="Thumb&nbsp; &nbsp; :thumb:" data-shortname=":thumb:" /></blockquote>

[QUOTE="MY-BLUE-BEAST, post: 171909, member: 388"] My brother has a 2003 WR450F, lately it has been acting up and having a few issues. 1st: It is crazy hard to start, after about ten or so hard kicks it finally starts. Electric start, Forget about it. 2nd: once it is started it runs crazy hot. Just sitting on the stand running for about 30 seconds it is already red hot. 3rd: It doesnt idle, the adjuster doesnt work, the fuel screw doesnt work, it just wont idle. Here is what we have done: 1st: We checked the valve clearances, no issue there, they are perfect. 2nd: Cleaned, cleaned and cleaned the carb still nothing 3rd: Rejetted from stock jetting and up and stock jetting down, trying every jet imaginable. The plate on the front of the throttle slide is in the right spot, the timing is dead on. Is there anything we are missing? I am going to pull the carb off of my bike and try it in there just to see if it works, if it does then at least we narrowed it down. What do you think? Im already sick of the damn thing, and would appreciate the help. Thanks :thumb: [/QUOTE]

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