07 Wr 450 Hard starting and dies


4 replies to this topic
  • RAZ227

Posted March 13, 2008 - 02:27 PM

#1

Hey all you 07 Wr 450 people!!

Have any of you experienced this:

#1. Bike has a problem starting with the e-start and kick start then wait a couple secs and it fires right up. Then when I'm just about to take off it dies:foul: Then, I try again, and sometimes it pops/backfires while tryng to start. The funny thing about it is, if I get the bike started and it allows me to ride it, it runs nice and strong, but as soon as I slow down for a tight corner and there are no revs; it will cut out.:thumbsup:

This just started last week out of the blue, so I took it to my guy b/c I thought it needed the valves adjusted. The good thing was the valves were dead on after almost 1 year of riding 2-3 times a week :eek: He pulled the carb apart and it was dirty, so he cleaned it and put a new thottle screw in it but it's still acting up. He's going to pick the bike up and drop off a loaner, but I'm just curious if any of you are/have expeienced this.

Thanks for your time reading this.

Rob

  • Frostbite

Posted March 13, 2008 - 02:46 PM

#2

Hey all you 07 Wr 450 people!!

Have any of you experienced this:

#1. Bike has a problem starting with the e-start and kick start then wait a couple secs and it fires right up. Then when I'm just about to take off it dies:foul: Then, I try again, and sometimes it pops/backfires while tryng to start. The funny thing about it is, if I get the bike started and it allows me to ride it, it runs nice and strong, but as soon as I slow down for a tight corner and there are no revs; it will cut out.:thumbsup:

This just started last week out of the blue, so I took it to my guy b/c I thought it needed the valves adjusted. The good thing was the valves were dead on after almost 1 year of riding 2-3 times a week :eek: He pulled the carb apart and it was dirty, so he cleaned it and put a new thottle screw in it but it's still acting up. He's going to pick the bike up and drop off a loaner, but I'm just curious if any of you are/have expeienced this.

Thanks for your time reading this.

Rob


Check the crankcase breather hose, it may be plugged. My 07 was doing the exact same thing the past 2 days, stalling at low RPM. I thought my jetting was rich since it warmed up a bit, but last night my valve cover popped out under pressure. My vent hose was plugged (with ice, but plugged is plugged) where it enters the airbox.

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  • C-P

Posted March 13, 2008 - 02:49 PM

#3

Also check fuel supply? Clogged screen? Or jets?

  • William1

Posted March 13, 2008 - 03:10 PM

#4

Check the fuel tank vent. Easy test is to remove the cap.

Also, drain the float bowl, may have to remove the pilot jet and give it a good cleaning.

  • RAZ227

Posted March 13, 2008 - 03:23 PM

#5

Thanks guys!!:thumbsup:

I'll check everything you mentioned. I hope something works. It's pretty darn frustrating




 
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