Help! New XR650R
Posted April 26, 2003 - 04:15 PM
First off, why is this thing so damn hard to start? Will 'uncorking' it make it easier to start? I have a CRF 450 that is easier to start than this bike.
Second, when I did finally get it started, I let it run for a couple minutes to warm up. I rode around the neighborhood and at low RPM's it ran fine. But, when I gave it anything past 1/4 to 1/3 throttle, it acted like it was running out of gas.
And before you ask... yes, there is gas in it, and yes it is turned on. Is this 'normal' for the BRP? Before taking things apart, could it be a crimped fuel line? Any other ideas?
Thanks in advance for any help.
Posted April 26, 2003 - 05:38 PM
Posted April 26, 2003 - 06:05 PM
Hard starting is also typical of a stock 650R. Overheating is another problem, stock.
Uncork the bike properly before riding it next time, and you will see HUGE improvement in all areas. Go to Off-Road.com and do a search for "XR650R" to find out how. and what part numbers you'll need to get. OR, search this forum for the info. In either case, you will need to do all of the changes together to get the results desired.
Properly uncorked and powered-up, this bike is really, really fast (like a CR500 but much more controllable power)
P.S. it's very hard to pinch the fuel line, notice how short and stout it is. Also make sure the choke is off. It will run even more crappy stock if the choke is left on.
Posted April 26, 2003 - 06:38 PM
I can understand it being underpowered, but it really runs bad. I had a XR650L (stock) a few years ago and it didn't run like this. It really bogs and there's a clacking sound in the motor just beyond 1/4 throttle. Low on power is one thing, but sounding like it's about to die is another matter. I will try the mods to uncork it, but it seems like there really is something wrong with it. I've owned quite a few bikes and nothing I've had has ever run this poorly in stock form. If anyone else has ANYTHING to add, I would appreciate it.
Posted April 26, 2003 - 06:45 PM
Posted April 27, 2003 - 04:53 AM
Do you have the stock skid plate on there or a metal one? Metal ones reflect noise and need a foam pad or other barrier to deaden the noise. Also, look for loose bolts holding the skid plate on. This kind of rattle is not uncommon if the above conditions are present.
Posted April 27, 2003 - 06:17 AM
Posted April 27, 2003 - 07:30 AM
Posted April 27, 2003 - 08:16 AM
the only time it makes the clacking sound is under load.
This makes more sense now. Perhaps it's bad gas as already suggested. Too lean of jetting can also cause pre-ignition/detonation issues, which can lead to permanent engine damage, so make sure to uncork your bike 'if' what you're experiencing is detonation.
If you're lugging your bike in too high of gear (at too low of RPM) with leaner jetting (like putting around slow in 3rd gear), then you'll also experience clacking. Make sure to uncork your bike or have your dealer do it and then see how it runs.
If you're rolling along in 2nd gear at 1/4 throttle and then roll (not whack open) the throttle to wide open, does the bike still make that clacking sound or does it rev out clean all the way to WOT?
Posted April 27, 2003 - 08:59 AM
Posted April 27, 2003 - 09:09 AM
As far as the gas goes, I think the dealer put in ONLY about a quart of gas! I rode it around the parking lot very slowly when I bought it. Too low of RPM's for the problem I'm experiencing now. When I got it home, I rode it around the neighborhood and noticed the clacking. Really sounded like it was running out of fuel. Sure enough, the fuel was very low. Bought some more super unleaded and filled er up. Went back out and the same clacking happened. So, I'm thinking that it is not bad gas as it has done this with gas from two different places.
I really don't think it's a lugging problem either. This is my eleventh bike and I've had a big single before (XR650L). I'm not a pro rider by any means, but I know not to lug a bike, especially when it's being broken in. That's why this problem really concerns me.
As for the rolling along in second and then rolling the throttle on from a 1/4 turn, yes I have tried this. In first, second and third gears and in all gears the same clacking sound comes from the motor once the throttle is beyond 1/4 to 1/3 open.
Again, thanks for the replies. If there are any other ideas I would love to hear them. The dealer doesn't open till Tuesday, so I've got a couple of evenings to try to cure this. If I can't get it cured, I'm gonna take it back to the dealer. I really don't want to run it again unless I make some sort of adjustment (that's where your suggestions could come in ). There's no way this could be good on a new motor.
It's really frustrating because I've thought about this purchase for a while and read up on the bike. Everything I've read says what a 'bulletproof' bike this is. I actually test rode a used one. It was uncorked and was awesome! It pulled about as hard as my CRF450. I would've bought that one, but it had hit the ground a few too many times (but still ran great). So, after much searching, I decided to buy new. Now this...
Posted April 27, 2003 - 11:52 AM
"If it's any help in figuring the problem out, the only time it makes the clacking sound is under load.
If I pull in the clutch and rev the motor, no problem. Let out the clutch and it starts clacking again. Only in the upper 2/3 of the RPM's.
In first, second and third gears and in all gears the same clacking sound comes from the motor once the throttle is beyond 1/4 to 1/3 open."
Key point to focus on is "under load". Not discounting the preignition idea. Just exploring other possibilites.
Have you checked the chain for tension? It may be loose and slapping around. Check the rear wheel for alignment (center of swingarm pivot bolt to center of the axle nuts on each side). You may also want to remove the countershaft sprocket guard and make sure the countershaft sprocket nuts are tight. Torque: 12 Nm ( 9 lbf-ft)
Posted April 27, 2003 - 03:29 PM
Thanks for the tips. I'm definitely gonna do the uncorking as soon as I (or the dealer) get the bike running correctly stock.
Thank you also for the tips. That is the exact kind of thing I was looking for. Never thought of the countershaft sproket being loose. I'm gonna check it out...
Posted April 27, 2003 - 04:01 PM
I checked the countershaft sprocket. Unfortunately, the torque wrench that I have only goes down to 15 ft/lbs. So I put a socket on there to try to give it a turn. They seem tightened well enough. There is a little play, about 1/8 inch, that the countershaft sprocket slides on the countershaft. Is this normal?
Posted April 27, 2003 - 05:15 PM
Sorry that you are having to struggle with this, my experience with this bike has been great. I will ride this bike until it can no longer be repaired or rebored and then I will keep it as a reminder of the good times I had.
Posted April 27, 2003 - 07:43 PM
The slight in and out play is exactly what I was talking about. Thanks so much for all your suggestions. I think I'm gonna take it back to the dealer when they are open again on Tuesday and see what they say. I feel confident that it's a good dealership and they will stand behind their sale. I'll let everyone know how it turns out.
As I previously posted, I've ridden an 'uncorked' one and had a blast. That's what convinced me to buy one. Hopefully, this problem can be easily corrected and I will soon feel the same about my XR as you do about yours.
Thanks again for all the feedback to you and everyone else that has posted. This is a really great site with some helpful people.
May my next post be positive!!!
Posted April 28, 2003 - 05:10 AM
I decided to change the oil to see if that will lessen the motor noise. While I was letting it drain I looked in the service manual and it says for poor high speed performance the first thing to check is the valve clearance and ignition timing. I am going to check the timing later today. I'll let you know if anything comes up.
Posted April 28, 2003 - 06:02 AM
Posted April 28, 2003 - 07:51 AM
I'll let you know what they say.
Posted April 28, 2003 - 09:50 AM
I just changed my oil this morning and it now runs with much less engine noise at this time. Amazing... The level had been about a 1/4" above the top hole on the dip stick. Maybe it had got some gas in it?? The factory oil seemed very thin when I drained it out. My sniffer doesn't work right now so I can't say if it had a gas smell. I put in Valvaline 10-40 and a new filter. My bike has about 100 miles on it and I thought I'd go about 300 before changing the oil. I'm sure glad I didn't. I guess what the magazine guys say is right. We should not trust the setup and lube job from the factory and just tear that new bike apart while she is still clean and make sure everything is set up right before we ride. Best of luck.
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