ADVrider

Go Back   ADVrider > Riding > Regional forums > The Rockies It's all downhill from here...
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 05-10-2012, 11:03 AM   #241
thump_co OP
..ouch
 
thump_co's Avatar
 
Joined: Feb 2011
Location: 8532'
Oddometer: 2,060
Quote:
Originally Posted by wakewop View Post
You got it thump. You will hear the rev if there is a leak. Vrooooom.
Thanks.. I originally had the concept confused. Thought the point of using the liquid was to temporarily plug the leak.

Quote:
Originally Posted by toddler View Post
I'm sure their are, but I just do a visual and light press. There should be 0 open space when they are closed. Backflow is bad as it takes away crankcase goodies from the combustion chamber.

If the bike is hard to start I would put more suspicion in the reeds, but you have not mentioned that.
That's how I checked.. pressed gently on each, then held it up to a light to look for leaks.

The bike was very hard startng when hot and lean, but that went away when I moved to the richer needle clip.
__________________
Ride

AMA | COHVCO | Stay The Trail | BRC | TPA | BCTR | NCTR
thump_co is offline   Reply With Quote
Old 05-10-2012, 06:43 PM   #242
James Adams
Misplaced
 
James Adams's Avatar
 
Joined: May 2006
Location: stuck in traffic
Oddometer: 9,154
Quote:
Originally Posted by wakewop View Post
The impeller upgrade did very little for my hot running bike. I also fought the jetting for an entire summer. This was in a bike that had 0 problems before. I finally gave up and sent the carb to Dave Hopkins in Washington (Ktm talk guru) and had him give it the royall treatment. Full ultrasonic cleaning , jetting and a custom tapered needle. Accelerator pump all tweaked up , squirt duration, and several o rings replaced. Set float height. Basically completely serviced all parts of my carb. Had 2 cracked o rings that I did not know even existed in the carb. Cost was $ 160 and the bike ran amazing after. Temps were never again a problem. Every bit of bog was gone.
...and it's still running great. I make sure to give it plenty of exercise.



Sorry for the interruption; back to 2-smoke talk...
__________________
2009 KTM 505xc-f Rally
James Adams is online now   Reply With Quote
Old 05-10-2012, 09:26 PM   #243
thump_co OP
..ouch
 
thump_co's Avatar
 
Joined: Feb 2011
Location: 8532'
Oddometer: 2,060
Progress?

Well... sprayed down everything looking for leaks today... no Vroooooms from anything, but did find a way to consistently kill it.

Strangely enough, the WD-40 has no effect, but hitting it with Carb, Contact or Brake cleaner will stall it right out.



The only real difference I can think of is that the WD40 comes out room temp, whereas the cleaners feel cold. Think it's a leak? it only happens by spraying around that particular bolt, not the head/cylinder seal or the plug.
__________________
Ride

AMA | COHVCO | Stay The Trail | BRC | TPA | BCTR | NCTR
thump_co is offline   Reply With Quote
Old 05-10-2012, 10:41 PM   #244
MeterPig
Meh
 
MeterPig's Avatar
 
Joined: Jul 2007
Location: Parker, Colorado...
Oddometer: 17,090
That is bizarre.
__________________
You looked down here...didn't you.
MeterPig is offline   Reply With Quote
Old 05-10-2012, 11:42 PM   #245
silverboy
Bunny
 
silverboy's Avatar
 
Joined: Nov 2010
Location: Boulder.Colorado
Oddometer: 544
Cry

Maybe its from that buzzing noise? Oh, it's a 2stroke, that's normal I guess? The solution is sitting alone in your garage feeling neglected, wondering what it did wrong....
__________________
Racing is life. Anything before or after is just waiting.

Steve Mcqueen
silverboy is offline   Reply With Quote
Old 05-10-2012, 11:50 PM   #246
thump_co OP
..ouch
 
thump_co's Avatar
 
Joined: Feb 2011
Location: 8532'
Oddometer: 2,060
Keep gettin' lippy and I'll send someone around to take out a kneecap.

Oh, wait...
__________________
Ride

AMA | COHVCO | Stay The Trail | BRC | TPA | BCTR | NCTR
thump_co is offline   Reply With Quote
Old 05-10-2012, 11:52 PM   #247
wakewop
Hucker
 
Joined: Jun 2008
Location: westminster co
Oddometer: 725
OUTSTANDING!!!!
. All I can say is DAMN I MISS THAT SEAT.!!!!!
Was the 1st thing I ordered after riding my new bike for 50 miles of trails.
Quote:
Originally Posted by James Adams View Post
...and it's still running great. I make sure to give it plenty of exercise.



Sorry for the interruption; back to 2-smoke talk...
wakewop is offline   Reply With Quote
Old 05-10-2012, 11:55 PM   #248
wakewop
Hucker
 
Joined: Jun 2008
Location: westminster co
Oddometer: 725
Back to the 2 stroke, I am now at a complete loss. Try this. Spray the carb cleaner or contact cleaner around the air box boot where it meets the carb.. Do the same where on the other boot where it leaves the carb. See if your engine responds to that. Im not pulling this out of my butt, these are all tests that Dave Hopkins had me do before I sent him my carb.
wakewop is offline   Reply With Quote
Old 05-11-2012, 12:25 AM   #249
thump_co OP
..ouch
 
thump_co's Avatar
 
Joined: Feb 2011
Location: 8532'
Oddometer: 2,060
Ooooh.. plot thickens (thins?).. This pic is from when I pulled the head a few weeks ago. The arrow is pointing to the bolt hole that I'm spraying in the video above. I'm assuming the dark discoloration is from combustion gasses? Thinkin' maybe the stud hole right next to the bolt hole is a little too shallow and the stud post is keeping the head from getting a tight seal on the inner o-ring?

Thinking either file down the post, or bore out the hole a little further?

__________________
Ride

AMA | COHVCO | Stay The Trail | BRC | TPA | BCTR | NCTR
thump_co is offline   Reply With Quote
Old 05-11-2012, 12:37 AM   #250
wakewop
Hucker
 
Joined: Jun 2008
Location: westminster co
Oddometer: 725
Hummmmmmm. Could be a slightly stretched bolt. I would get a new one so you don't risk buggering up the threads on the case.
wakewop is offline   Reply With Quote
Old 05-11-2012, 01:50 AM   #251
RideFreak
Green Chile Eater
 
RideFreak's Avatar
 
Joined: Apr 2009
Location: County Lockup, NM
Oddometer: 5,822
I had one of the head bolts stretch, ended up replacing them all. I'd be surprised if that was the "air leak". Combustion leaks don't typically cause a lean symptom.
__________________
Chris
"Life's journey is not to arrive at the grave safely in a well preserved body, but to rather skid in sideways, totally worn out, shouting ... Holy Shit, what a ride!"
CL Adventure Ride 2013 /CL Revisited 2014 / 700 Miles of Scenic Utah Backcountry / MY VIDEOS
RideFreak is online now   Reply With Quote
Old 05-11-2012, 09:06 AM   #252
TooFast
Studly Adventurer
 
TooFast's Avatar
 
Joined: Apr 2008
Location: Rocky Mountains
Oddometer: 791
May want to check your head with a straight edge and flashlight, I usually true my heads on a surface plate with fine grit paper to ensure flatness for a good seal. Have seen cylinder tops not flat also.
TooFast is offline   Reply With Quote
Old 05-11-2012, 11:24 AM   #253
thump_co OP
..ouch
 
thump_co's Avatar
 
Joined: Feb 2011
Location: 8532'
Oddometer: 2,060
Alright.. going to order new head bolts and washers. I'll check the head edge as well. Maybe order a Slaven's "mule" head.. anyone tried those?

RF - wouldn't this leak also have to be "sucking in" for the spray to be able to kill it like it does?
__________________
Ride

AMA | COHVCO | Stay The Trail | BRC | TPA | BCTR | NCTR
thump_co is offline   Reply With Quote
Old 05-11-2012, 01:27 PM   #254
silverboy
Bunny
 
silverboy's Avatar
 
Joined: Nov 2010
Location: Boulder.Colorado
Oddometer: 544
Is this the bike that did Baja 1000 solo? Did it suck in a bunch of sand?
I'm thinking it may have been run hard and put away wet or in this case put away dry....
__________________
Racing is life. Anything before or after is just waiting.

Steve Mcqueen
silverboy is offline   Reply With Quote
Old 05-11-2012, 02:11 PM   #255
MeterPig
Meh
 
MeterPig's Avatar
 
Joined: Jul 2007
Location: Parker, Colorado...
Oddometer: 17,090
Quote:
Originally Posted by thump_co View Post
Alright.. going to order new head bolts and washers. I'll check the head edge as well. Maybe order a Slaven's "mule" head.. anyone tried those?

RF - wouldn't this leak also have to be "sucking in" for the spray to be able to kill it like it does?
Wouldn't that be in the intake stroke?
__________________
You looked down here...didn't you.
MeterPig 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 08:56 AM.


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