ADVrider

Go Back   ADVrider > Bikes > Trials
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 10-06-2011, 05:43 PM   #136
BikePilot
Beastly Adventurer
 
BikePilot's Avatar
 
Joined: Jul 2005
Location: Tampa
Oddometer: 11,171
I don't know what's causing it, but your comment that flooding caused it to rev to the moon doesn't quite fit. Flooding should make most any engine, especially a two stroke bog down and certainly won't make it rev out as you describe. If more fuel makes it rev way high, then your engine speed is being controlled by restricing fuel flow without similarly restricting air flow (sorta like on a diesel) so, like a diesel, it'll rev up with more fuel, but no more air. If its running as it should more fuell will be too much and it'll bog.

Note that most two strokes when dead cold will rev up higher with more fuel as when totally cold even full choke isn't enough to get a totally sufficient amount of fuel into the combustion chamber - that condition should last only maybe 30 seconds. For example, when I start my cold 315R with full choke it fires right up and idles about right, after just a few seconds the idle will climb and if I don't push the choke down it'll start to rev up higher than I'd like on a cold motor. Now of course after its warmed for say a minute pulling the choke would bog down the motor.

The choke is sorta weird on these, make sure you are operating the choke lever correctly. Sounds dumb, but I don't know that I'd have figured it out right away if the seller hadn't show me how it worked
__________________
'09 Buell XB12XT, TL1000S, H1F, M620, CR250R, KX100, XR650R, Cota 315R

Summer 2009 Ride Report http://advrider.com/forums/showthrea...1509c&t=507038
Summer 2008 RR. http://www.advrider.com/forums/showthread.php?t=367703
BikePilot is offline   Reply With Quote
Old 10-06-2011, 07:27 PM   #137
Spacemonkeyr
n00b
 
Spacemonkeyr's Avatar
 
Joined: Sep 2011
Location: NC
Oddometer: 7
"It first started revving wildly when it was flooding because of the bad float." - Meaning, it was flooding because of the bad float, but yet the first wild revving was experienced while it still had the bad float, before I ever took the carb apart. Make more sense? Doesn't really to me because the only erratic revving I've ever had on a 2-stroke was right before they ran out of gas. And at that, they only revved up somewhat and then died. Never like this thing is doing. Never had a bad float, or flooding condition, where it didn't just fall on it's face and die out, 2 or 4 stroke.

Choke operation- Push it up and start it, wait 10-15 seconds when the idle changes, pull it back down and crack the throttle a couple of times to clear it, then should idle fine there after?
Spacemonkeyr is offline   Reply With Quote
Old 10-07-2011, 10:40 AM   #138
ridenm
not waiting anymore
 
ridenm's Avatar
 
Joined: Jan 2010
Location: Carnuel, NM USA
Oddometer: 2,222
Quote:
Originally Posted by Spacemonkeyr View Post
Choke operation- Push it up and start it, wait 10-15 seconds when the idle changes, pull it back down and crack the throttle a couple of times to clear it, then should idle fine there after?
On my 315R the choke has sometimes hung up even though the lever is in the down position. Pushing it back up and then making sure it snaps back down fixes the occurrence. But that wouldn't create the wild over-rev problem.
ridenm is offline   Reply With Quote
Old 10-07-2011, 10:46 AM   #139
BikePilot
Beastly Adventurer
 
BikePilot's Avatar
 
Joined: Jul 2005
Location: Tampa
Oddometer: 11,171
Yep, just make sure you are moving the lever enough. When up it goes near vertical, when down it should be horizontal. Still, that's not the problem, the problem is way too much air getting into the engine I think. Severe over-heating can also make a two stroke rev away like that (but it'll have no power - if you toss it in gear and put just a little load on one in this condition it'll die out).
__________________
'09 Buell XB12XT, TL1000S, H1F, M620, CR250R, KX100, XR650R, Cota 315R

Summer 2009 Ride Report http://advrider.com/forums/showthrea...1509c&t=507038
Summer 2008 RR. http://www.advrider.com/forums/showthread.php?t=367703
BikePilot is offline   Reply With Quote
Old 10-08-2011, 04:18 PM   #140
Spacemonkeyr
n00b
 
Spacemonkeyr's Avatar
 
Joined: Sep 2011
Location: NC
Oddometer: 7
I believe that she is cured! Seems to be running well. I found 2 more problems with the carb:
1. The float arm would drop so low that sometimes it would bind the main valve and not push it up to seat it. I bent the stop tab of the float arm so it wouldn't drop so low. It didn't really seem to be flooding after replacing the floats, but I would see some gas bubble in both the main air inlet tube and the vent tube. Now I do not see this happening.

2. The Slow Air Bleed that is under the Slow Jet was clogged. Tiny hole through it, and must have sucked something else in it that was left in the tank/ fuel line. After I cleaned the carb and replaced the floats the first time, It ran for 10 minutes or so until it started revving again. This time I sloshed the tank out and sprayed carb cleaner through the fuel line. If I have any more problems, I guess I'll have to squeeze in an inline fuel filter.

I ran the bike for probably half an hour today, and all seems well.

Now the challenge is finding a place near me to ride and putting in some time. I'm really not used to going so slow, but I see good times ahead

Thanks for all of the advice guys!
Spacemonkeyr is offline   Reply With Quote
Old 10-09-2011, 08:49 AM   #141
Sting32
Trials Evangelist
 
Joined: Oct 2009
Location: Minneapolis, Ks
Oddometer: 1,244
Quote:
Originally Posted by Spacemonkeyr View Post
I believe that she is cured! Seems to be running well. I found 2 more problems with the carb:
1. The float arm would drop so low that sometimes it would bind the main valve and not push it up to seat it. I bent the stop tab of the float arm so it wouldn't drop so low. It didn't really seem to be flooding after replacing the floats, but I would see some gas bubble in both the main air inlet tube and the vent tube. Now I do not see this happening.

2. The Slow Air Bleed that is under the Slow Jet was clogged. Tiny hole through it, and must have sucked something else in it that was left in the tank/ fuel line. After I cleaned the carb and replaced the floats the first time, It ran for 10 minutes or so until it started revving again. This time I sloshed the tank out and sprayed carb cleaner through the fuel line. If I have any more problems, I guess I'll have to squeeze in an inline fuel filter.

I ran the bike for probably half an hour today, and all seems well.

Now the challenge is finding a place near me to ride and putting in some time. I'm really not used to going so slow, but I see good times ahead

Thanks for all of the advice guys!
I run inline filters even on th brand new '11 raga, piece of mind I guess.
Sting32 is offline   Reply With Quote
Old 10-13-2011, 10:30 AM   #142
Double H
Hurricane Harry
 
Double H's Avatar
 
Joined: Dec 2010
Location: Seattle
Oddometer: 1,238
In.

Scored this low hour 2001 yesterday.

Double H is online now   Reply With Quote
Old 10-13-2011, 03:05 PM   #143
Garthe OP
ROCKS ARE YOUR FRIENDS...
 
Garthe's Avatar
 
Joined: Nov 2004
Location: Arizona
Oddometer: 4,294
^^^^^^^^^^^^^^^^^^^^^^^^^^^


Garthe is offline   Reply With Quote
Old 10-16-2011, 08:59 PM   #144
turnsleft
Beastly Adventurer
 
turnsleft's Avatar
 
Joined: Jun 2007
Location: Woolley
Oddometer: 1,465
Quote:
Originally Posted by Double H View Post
Back in.

Scored this low hour 2001 yesterday.

That's better.
__________________
What has been seen can not be un-seen
turnsleft is offline   Reply With Quote
Old 10-31-2011, 08:52 PM   #145
SocalRider
n00b
 
Joined: Oct 2011
Oddometer: 4
I have been looking for a clean Montesa 315r. Does anyone know of one for sale. Prefer 2001-2004, the newer the better. Send me a PM with any information you may have. Thanks for the help.
SocalRider is offline   Reply With Quote
Old 11-01-2011, 06:22 AM   #146
Sting32
Trials Evangelist
 
Joined: Oct 2009
Location: Minneapolis, Ks
Oddometer: 1,244
Quote:
Originally Posted by SocalRider View Post
I have been looking for a clean Montesa 315r. Does anyone know of one for sale. Prefer 2001-2004, the newer the better. Send me a PM with any information you may have. Thanks for the help.
Here's a good Craigslist searching TIP. Download firefox, install it, but you uncheck make default... (no matter what, IE is safer for general browsing).

Then goto http://www.crazedlist.org/index.cgi website, follow on site instructions to eliminate what they need you to do so the site works. Firefox is the only browser you can do this with, that I know of.

then pick all the cities you want to "hunt through" in ONE search. Carefull, too many sites and searches I guess Craigslist can ban your IP thinking you are attacking servers... I do all of colorado, nebraska, missouri, oklahoma and north end of texas without problem.

you might find some close to you?
Sting32 is offline   Reply With Quote
Old 11-01-2011, 06:40 AM   #147
dontlr
Mysterious Chatter
 
dontlr's Avatar
 
Joined: Sep 2003
Location: Queen Creek AZ - Its a dry heat
Oddometer: 2,653
Or just use this and not jump through hoops

http://claz.org/classifieds.html?q=Montesa+trials+bike
dontlr is offline   Reply With Quote
Old 11-01-2011, 06:56 AM   #148
Sting32
Trials Evangelist
 
Joined: Oct 2009
Location: Minneapolis, Ks
Oddometer: 1,244
Ya do it one time, works flawless though. Ill keep your link too though :}

Sent from my DROID3 using Tapatalk
Sting32 is offline   Reply With Quote
Old 11-01-2011, 07:07 AM   #149
pjm204
Beastly Adventurer
 
Joined: Jan 2010
Location: Philadelphia, PA
Oddometer: 1,827
www.searchtempest.com

One site searches all craigslists within a specified radius of your zip code...and sorry no 315r here but I'd love to buy one in the future
__________________
Current bikes:2006 DL650, 2008 WR250R
Past bikes: XT225, TTR125, '04 CRF50 '74 DT125,'70 TS250,'85 v45, '89 zx600c, '78 GS400x, '99 GS500E, '01 GS500E '05 Z750s, '77 GS400e, '82 GS1100ez, '97 GSX600, '07 VFR800, '03 KLR650, '03 FJR1300, '06 DL1000, '00 KLR650, '99 WR360, '08 DL650, '05 DR650, '08 EX650r, '96 CR500, '82 GS450T, '06 Ural
pjm204 is offline   Reply With Quote
Old 11-01-2011, 08:00 AM   #150
Sting32
Trials Evangelist
 
Joined: Oct 2009
Location: Minneapolis, Ks
Oddometer: 1,244
That's a kewl site too. I like mine because I can pick sweet spot to hunt like dallas texas minneapolis minnesota

Sent from my DROID3 using Tapatalk
Sting32 is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 11:41 AM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014