XR650R Carburetor Recommendations?
Posted 07 January 2012 - 06:52 PM
Today I kicked it over and it eventually started on full choke and buzzed nicely at high RPMs, as it should. However when I go to half choke it dies. I've gotten it started from half choke a couple of times, but it dies when I shut the choke off all the way. Previously I would crank the throttle adjustment higher until it warmed up. Now it will not idle, and I can barely keep it running by twisting the throttle. Dies when I let go...
SOOO, what's the opinions about rebuilding what I've got versus the Edelbrock pumper, Mikuni slide, and other carbs available? I'm getting old, and I'm really wanting to start it up and have it idle with minimal hassle (who doesn't I guess!). Help will be appreciated!
Posted 08 January 2012 - 09:03 AM
Posted 08 January 2012 - 11:52 AM
Just from the symptoms you describe, there is not enough fuel moving through the idle and/or pilot circuits. Perhaps even the main circuit is affected.
Posted 08 January 2012 - 03:27 PM
I don't know what size jets are installed or where the clip is, but I'm going to learn. Would you suggest a rebuild kit or would a cleaning be enough? If I take it all apart I may as well rebuild it, but do you think I need to? The bike has sat unridden for up to a year at a time...
Posted 01 March 2012 - 04:42 AM
Posted 01 March 2012 - 02:46 PM
Posted 04 March 2012 - 01:31 AM
Yours might be junk but mines isn't... bike starts first time hot or cold and she runs great what else could you ask for ?......
Posted 04 March 2012 - 04:56 PM
Have you tried one of these bikes that had a pumper carb? I just can believe how it changed my bike. To say that the stock carb is junk is unfair because it does a very adequate job at what it was designed to do but If your an aggressive driver like myself than you owe it to yourself to try a pumper out. When you do you'll come back here and tell everyone how much the stock carb is "junk"!! LOL
Edited by D0T-C0M, 05 March 2012 - 04:21 AM.
Posted 04 March 2012 - 11:29 PM
The stock carb is junk.
Posted 05 March 2012 - 04:44 PM
Posted 05 March 2012 - 05:34 PM
Hmmmm you'd only need one but it would require you to change the intake boot to that of the XR650L that would accept one carb. you'd have to read up to see if anyone has done this before spending the $$$ only to find out that something doesn't fit.
Posted 06 March 2012 - 01:10 AM
Posted 06 March 2012 - 08:33 AM
The tricky part of the swap is re-shaping the gas tank. It helps to have an aftermarket tank as the stocker is apparently made of thicker plastic. I re-shaped mine using a $12 heat gun from Harbor Freight and a wooden hammer handle. Its very important to take your time and slowly re-shape with moderate even applications of heat. The carb still needs to be installed tilted to the side a bit to clear the CCT. Its all worth the trouble as the FCR is an amazing upgrade. The bike should have come stock with this carb.
Posted 06 March 2012 - 11:03 AM
The FCR upgrade is going to cost more than your bike is worth isn't it??
Posted 06 March 2012 - 11:16 AM
Edited by pb1963, 06 March 2012 - 11:23 AM.
Posted 06 March 2012 - 02:13 PM
Posted 06 March 2012 - 03:34 PM
That WAS the early "pumper carb". Kinda sorta.
Posted 06 March 2012 - 04:26 PM
The best way to see where the tank needs to be re-shaped is to install the FCR on the bike and then try putting the tank back on. You'll see where it needs to be massaged in to clear the throttle cable assembly.