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[dsn_klr650] stalling in the rain ---update
Posted: Fri Aug 04, 2000 2:36 pm
by Jim & Shannon Morehead
Hi Ken,
Could you be talking about the carb vent tube? Check out the Kehin CVK40
primer on the KLR web site for pics. The article is really well done.
Jim
----- Original Message -----
From: "KEN TRULL"
To: DSN_klr650@egroups.com>
Sent: Friday, August 04, 2000 2:24 PM
Subject: [DSN_klr650] Stalling In The Rain ---Update
> The other day I posted about stalling in the rain and re-routing
> all the tubes out the side of the bike to solve the problem quickly.
> I suspected the gas tank breather as the culprit based on earlier
> list discussions.
> The tank breather WAS NOT the culprit. It is/was the clear tube
> that comes directly from the upper left side of the carburetor.
> It is a vacuum line of some sort. Want to prove it? Let the bike
> idle and put your finger over the end of the tube and watch the engine
> stall almost immediately.
>
> What is the purpose of that line? It is totally unfiltered unless
> the filter is inside the carb.(unlikely) Seems like it would suck
> any kind of small grit and grime right inside the carb.
>
> Hook a brother up wit' some learnin'.
>
> Ken Trull
> BR549-A14
> Greenbough, AL
>
>
>
> Visit the KLR650 archives at
>
http://www.listquest.com/lq/search.html?ln=klr650
> Support Dual Sport News... dsneditor@...
> Let's keep this list SPAM free!
>
> Visit our site at
http://www.egroups.com/group/DSN_klr650
> To unsubscribe from this group, send an email to:
>
DSN_klr650-unsubscribe@egroups.com
>
>
[dsn_klr650] stalling in the rain ---update
Posted: Fri Aug 04, 2000 4:01 pm
by BCSavWill@cs.com
Hi,
I was curiouse about this, so I just cranked up the 250 and 650. The clear
plastic tube going to the upper left side of the carb, labled "vent hose"
seems to be positvly pressured. I pinched the end and felt a pressure build
up. Neither engine stopped.
Interestingly enough the 250 went through a very deep rutted track that was
full of water and stalled out ofter going thro. I thought it just drowned
out. It was being ridden very ethusiastically by my girl friend Dawn. It
started right up again tho.
More thoughts for the pot.
Regards,
Brian
A14
D17
[dsn_klr650] stalling in the rain ---update
Posted: Fri Aug 04, 2000 6:46 pm
by Toby Lampson
KEN TRULL wrote:
> The tank breather WAS NOT the culprit. It is/was the clear tube
> that comes directly from the upper left side of the carburetor.
> It is a vacuum line of some sort. Want to prove it? Let the bike
> idle and put your finger over the end of the tube and watch the engine
> stall almost immediately.
>
> What is the purpose of that line? It is totally unfiltered unless
> the filter is inside the carb.(unlikely) Seems like it would suck
> any kind of small grit and grime right inside the carb.
Ken, Sounds like the float bowl overflow tube to me......
What's interesting is it shouldn't really have suck or
blow either way....its a gas overflow.....questions:
(1)
It comes outta the top left of the carb.? Is this
'as seated' on the bike?
(2)
This clear tube just comes out so-far, then ends?
It isn't connected to something at both ends? Right?
(3)
If it is connected at both ends, where?
(4)
Does it blow or suck?
Imaginative speculation......I suppose....someone coulda
'T' eed, or just cut an old smog cannister tube that was
tied into the vacume for the petcock........and jus' cut it,
left it open.
If, it IS the gas overflow tube.......then it really shouldn't
have any suck...cause you shouldn't be using gas that
rapidly......if it does, its news to me......
If this is the case, my guess is its created somehow
by the venturi in the internals of the carb......
Tellus what you find....
Slide
[dsn_klr650] stalling in the rain ---update
Posted: Sat Aug 05, 2000 8:57 am
by Kurt Simpson
> > > What is the purpose of that line? It is totally unfiltered unless
> > > the filter is inside the carb.(unlikely) Seems like it would suck
> > > any kind of small grit and grime right inside the carb.
> >
>
>
>
> Sounds like a part of the smog device (charcoal canister).
poor guy, he asks what the tube is for and we're telling him it is part of
the canister system, part of the petcock etc. ...we've got to do better.
He's talking about the so-called overflow/vent tube on the upper side of the
carburetor...it vents the float bowl. Contrary to another listers report
when I put my finger on the end of the tube my bike stopped nearly
immediately. I'm wondering if the long vexing question about the rain
stalling isn't right in front of us....
Kurt
[dsn_klr650] stalling in the rain ---update
Posted: Sat Aug 05, 2000 12:38 pm
by Jim & Shannon Morehead
Hi Kurt,
Check out my earlier response to his question. Hehehe.
Jim
device (charcoal canister).
>
> poor guy, he asks what the tube is for and we're telling him it is part of
> the canister system, part of the petcock etc. ...we've got to do better.
> He's talking about the so-called overflow/vent tube on the upper side of
the
[dsn_klr650] stalling in the rain ---update
Posted: Sat Aug 05, 2000 4:44 pm
by Kurt Simpson
Hi Ken,
Could you be talking about the carb vent tube? Check out the Kehin CVK40
primer on the KLR web site for pics. The article is really well done.
Jim
_______________
Good on ya Jim...
----- Original Message -----
From: "Jim & Shannon Morehead"
To: DSN_klr650@egroups.com>; ; "Kurt Simpson"
Sent: Saturday, August 05, 2000 11:33 AM
Subject: Re: [DSN_klr650] Re: Stalling In The Rain ---Update
> Hi Kurt,
>
> Check out my earlier response to his question. Hehehe.
>
> Jim
>
> device (charcoal canister).
> >
> > poor guy, he asks what the tube is for and we're telling him it is part
of
> > the canister system, part of the petcock etc. ...we've got to do better.
> > He's talking about the so-called overflow/vent tube on the upper side of
> the
> > carburetor...it vents the float bowl. Contrary to another listers report
> > when I put my finger on the end of the tube my bike stopped nearly
> > immediately. I'm wondering if the long vexing question about the rain
> > stalling isn't right in front of us....
> >
> > Kurt
> >
> >
> >
> >
> > Visit the KLR650 archives at
> >
http://www.listquest.com/lq/search.html?ln=klr650
> > Support Dual Sport News... dsneditor@...
> > Let's keep this list SPAM free!
> >
> > Visit our site at
http://www.egroups.com/group/DSN_klr650
> > To unsubscribe from this group, send an email to:
> >
DSN_klr650-unsubscribe@egroups.com
> >
> >
>
>
>
>
> Visit the KLR650 archives at
>
http://www.listquest.com/lq/search.html?ln=klr650
> Support Dual Sport News... dsneditor@...
> Let's keep this list SPAM free!
>
> Visit our site at
http://www.egroups.com/group/DSN_klr650
> To unsubscribe from this group, send an email to:
>
DSN_klr650-unsubscribe@egroups.com
>
>
>
[dsn_klr650] stalling in the rain ---update
Posted: Mon Aug 07, 2000 12:48 pm
by BCSavWill@cs.com
Hi Ken,
Sorry I blew this one.
Using my finger over the vent pipe I could not get the motor to stop and it
FELT like posative pressure...........WRONG.
So I got a jar of water and stuck the pipe in it. Sure enough it stopped. I
did it several times and the time varies slightly but it stopped. Perhaps I
should stick to the old Amal carbs.
I think the best solution is to vent the pipe into its own air box. I see WB
has some kits to do this, one by PC Racing.
Sorry about your mind!
Brian
A14
[dsn_klr650] stalling in the rain ---update
Posted: Mon Aug 07, 2000 3:11 pm
by Toby Lampson
Yeehawww.....God willing, the rain stalling problem is
solved.
The mod(s) to re-locate the float bowl overflow
tube to a potentially less water accessible location
sound xlnt.
My tests today:
Finger over overflow tube end........nothing.
Tube end submerged 2" in glass of water....nothing.
Soap bubbles on end of tube....reveal 'breathing',
slightly 'in and out'.
Tube double crimped on itself.....bike dies....
every time.......like a kill switch.
In wet situations water must be entering the
tube end enough so that, when combined with
whatever other running conditions
(i.e. vibration, shock, etc.) the diaphraming
action of the water gets stopped........even
ever so slightly......and the bike just dies.
Whatatrip-of-a-problem, congratulations borg!
Toby
A7 Therapy
[dsn_klr650] stalling in the rain ---update
Posted: Mon Aug 07, 2000 4:38 pm
by Kurt Simpson
> Whatatrip-of-a-problem, congratulations borg!
>
> Toby
> A7 Therapy
I agree Slide, considering what a pain it has been it is kind of shocking
how simple it was. In my mind there remains still one other issue plaguing
the KLR. It is the tendency to exhibit similar fuel starvation problems in
moderate to hot weather. Last time it happened with me. The bike was running
on the slab and functioning superbly...After a nice 100 mile run in 70
degree temps the bike went into major sputtering at 75-80 mph. I pulled into
St. George, refueled, rested, and the bike ran perfectly for the remainder
of the trip. Others have reported similar issues and there was a big thread
at one point about carb icing.
Kurt
was that you?-in new york
Posted: Tue Aug 08, 2000 9:51 pm
by carmic7@aol.com
Hello
I was riding in the New York Ride for kids and there were two green KLR's in
the parking lot, couldn't find the riders though, the newspaper said there
were 700 of us there, I gave up trying to find anyone!
-neil