Overheating & No Start?

2 replies to this topic
  • KJR45K

Posted November 28, 2005 - 11:13 AM


My brother's picked up a new '04 XR650R a few weeks ago and rode it last weekend. He was blipping around the campsite and never really got on it, never getting it out of 2nd gear for about 30 minutes. The coolant tank started bubling and coolant was pouring out of the right side of the bike. Then, it refused to start.

Any hints? He was told that bike "can't" be ridden slow by the dealer.


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

Posted November 28, 2005 - 12:05 PM


That dealer has their head up their poop chute. The bike needs to be uncorked. i.e. better breather/jetting to alleviate the lean symptoms your brother is experiencing. Do a search on here for "uncorking", make sure it reads for the 650R and you'll be golden. Tons of info on it.

  • jim1234

Posted November 28, 2005 - 12:08 PM


Start with the basics fuel and spark and valve adj. The stock thermostats most of the time fail open . The jetting is lean from the factory. Most guys run a high pressure cap. This is what I did, removed stock stat and replaced with summers stat, ex. header wrap, and used engine ice . I bought a high pressure cap but didn't need it. I don't like the extra pressure and my bike doesn't boil at all. I have white bros E exhaust . My jetting is a 68s pilot and 175 main. I've ridden the bike very slow for long periods without a problem. I've owned a couple of 650r's and this combination works well. I would change the stat, use engine ice and correct jetting. I bet the overheating stops. That is if nothing is mech. wrong with the engine (I really doubt it) . I live in Ca. and would be happy to help if you live in the area. I just did 270 miles through the desert with my 8 year old on the back ( baja designs footpegs) . Tight deep sand washes, and the bike worked perfect. I live in Phelan , just let me know if you need any help.
Thumper Talk is a great tool!

Related Content


Honda XR650L 2016 by Chris.GVS

Honda XR650L 2016
  • - - - - -
  • 0 reviews

DirttyPig 2005 Xr650l Prroject! by braapmebb1moretime

Dirt Bike   Make / Model Specific   Honda   XR600/650
  • 22 replies

Fell Off Trailer by usafxr

Dirt Bike   Make / Model Specific   Honda   XR600/650
  • Hot  43 replies

Post Apocalypse, ThumperTalk style! by Justin Pearson

Dirt Bike   General Dirt Bike Forums   General Dirt Bike Discussion
  • Hot  35 replies

Wiseco 101MM Spark Knock Low Engine Temps by imandrewparks

Dirt Bike   Make / Model Specific   Honda   XR600/650
  • 7 replies

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.