Page 1 of 1
no reserve
Posted: Mon Jan 28, 2002 11:31 am
by planetequipment
I experienced a fuel delivery problem yesterday. I believe it was
similar to problems others have posted recently (Bryan?). I ran out
of fuel on the main petcock position. Switching to reserve made no
difference. Fortunately, the problem occurred only a couple of miles
from my house.
I have a clear plastic (Volkswagen type) fuel filter and also a Scott
Oiler. The filter never fills up, but generally has about 1/4" of
fuel in the lower portion of the filter. I can always see the fuel
flowing into the filter.
I stopped the bike at the side of the road. There was no gas in the
filter. I looked in the gas tank and saw that the gas level was just
slightly above the main inlet (the bike was on the side stand). With
the bike upright, the gas was below the inlet. Ah hah! The reserve
position on the petcock had to be the culprit. With the bike on the
sidestand, I was able to get fuel into the carb. I had to go through
this routine a couple of times to get home.
Back at home, I drained the tank by applying vacuum to suction to the
petcock vacuum port. I was able to drain through both the main and
reserve positions. I removed the petcock and completely disassembled
it. The only thing I found that could have contributed to the
problem was the anti-blowback valve in the suction port. It seemed
to be sticking periodically in the blowback position. It is a little
phenolic disk. One side was slightly rougher that the other. I
reinstalled it with the rougher side toward the sealing side. It
seemed to do the trick.
I reinstalled the petcock, put gas back into the tank. The level was
below the main inlet. I started the engine and no gas flowed in the
filter - the float bowl wouldn't fill. I removed the hose from the
bottom of the filter and ran a hose into a can. When cranking the
engine, gas flowed. ?????
I removed the filter and started the bike. I knew fuel was flowing
by the response of the engine. I then rode the bike several miles.
Repeatedly I would switch the petcock to the main position (no gas,
remember). When the engine would start to die, I would move the
petcock to reserve. I did this enough times to prove to myself that
it was actually working.
I don't know why fuel wouldn't flow into the float bowl with the
filter in place. It hurt me to do it, but I left the filter off. My
only consolation is that the petcock screens are very fine mesh.
Factoid: Fuel mileage is 1 mpfb. That's one mile per float bowl.
Ron
no reserve
Posted: Mon Jan 28, 2002 1:28 pm
by Mark St.Hilaire, Sr
> I don't know why fuel wouldn't flow into the float bowl with the
> filter in place. It hurt me to do it, but I left the filter off. My
> only consolation is that the petcock screens are very fine mesh.
Carbs for Dummies would be too advanced for me to read & understand, so
with that in mind: would the vacuum connection have anything to do with
it? A crack in the hose, or something like that?
> Factoid: Fuel mileage is 1 mpfb. That's one mile per float bowl.
That got a good chuckle out of me - probably because it wasn't ME who was
riding float bowl by float bowl...
Wise men still seek Him...
Mark St.Hilaire, Sr
A15
Also: KLR6500@...
HomePage:
http://home.adelphia.net/~msaint/index.html
KLR650 Motorcycle Pages:
http://klr6500.tripod.com/
Valve Check & Adjustment Guide:
http://klr6500.tripod.com/valves.html
no reserve
Posted: Mon Jan 28, 2002 2:06 pm
by planetequipment
--- In DSN_klr650@y..., "Mark St.Hilaire, Sr" wrote:
> > I don't know why fuel wouldn't flow into the float bowl with the
> > filter in place. It hurt me to do it, but I left the filter
off. My
> > only consolation is that the petcock screens are very fine mesh.
>
> Carbs for Dummies would be too advanced for me to read &
understand, so
> with that in mind: would the vacuum connection have anything to do
with
> it? A crack in the hose, or something like that?
>
> > Factoid: Fuel mileage is 1 mpfb. That's one mile per float bowl.
>
> That got a good chuckle out of me - probably because it wasn't ME
who was
No problem with the vacuum connection, Mark. The whole system worked
fine except when the filter outlet was connected to the carb.
Ron
no reserve
Posted: Mon Jan 28, 2002 3:01 pm
by cactus_reese
Ron,
Thank you for doing that experiment. I have not had a chance to run
my gas low again to see if I still have that problem, but my symptoms
were almost the same as yours. Everytime I think I'll try to run it
low and test it, I end up wanting to go somewhere that requires me to
fill 'er up.
I am using the little cone visu-filter. Without it, I experienced a
dirty float needle twice. Try riding home when your engine will only
run at 3000 RPM or above. I think I prefer the reserve problem to the
dirty float needle but I would like to find a filter that works. Maybe
mine is dirty after 1000 miles. Testimonials anyone?
-Bryan
--- In DSN_klr650@y..., "planetequipment" wrote:
> I experienced a fuel delivery problem yesterday. I believe it was
> similar to problems others have posted recently (Bryan?). I ran out
> of fuel on the main petcock position. Switching to reserve made no
> difference. Fortunately, the problem occurred only a couple of
miles
> from my house.
>
> I have a clear plastic (Volkswagen type) fuel filter and also a
Scott
> Oiler. The filter never fills up, but generally has about 1/4" of
> fuel in the lower portion of the filter. I can always see the fuel
> flowing into the filter.
>
> I stopped the bike at the side of the road. There was no gas in the
> filter. I looked in the gas tank and saw that the gas level was
just
> slightly above the main inlet (the bike was on the side stand).
With
> the bike upright, the gas was below the inlet. Ah hah! The reserve
> position on the petcock had to be the culprit. With the bike on the
> sidestand, I was able to get fuel into the carb. I had to go
through
> this routine a couple of times to get home.
>
//SNIP//
> I don't know why fuel wouldn't flow into the float bowl with the
> filter in place. It hurt me to do it, but I left the filter off.
My
> only consolation is that the petcock screens are very fine mesh.
>
> Factoid: Fuel mileage is 1 mpfb. That's one mile per float bowl.
>
> Ron
no reserve
Posted: Mon Jan 28, 2002 4:01 pm
by Devon Jarvis
A dirty filter is distinctly possible. I would have thought a clogged
filter would have filled with gas on the "upstream" side- the only time
I had a clogged filter for certain I had to change it at night on the
roadside and could only see that it was filled with crap, not whether it
was full of gas when the motor quit.
Especially the paper element filters, they might flow slowly without
visible crub inside, because they have a fine mesh. I haven't put on a
new filter, but I have the luxury of a new fuel tank and bike.
Devon
A15
cactus_reese wrote:
>
> Ron,
> Thank you for doing that experiment. I have not had a chance to run
> my gas low again to see if I still have that problem, but my symptoms
> were almost the same as yours. Everytime I think I'll try to run it
> low and test it, I end up wanting to go somewhere that requires me to
> fill 'er up.
>
> I am using the little cone visu-filter. Without it, I experienced a
> dirty float needle twice. Try riding home when your engine will only
> run at 3000 RPM or above. I think I prefer the reserve problem to the
> dirty float needle but I would like to find a filter that works. Maybe
> mine is dirty after 1000 miles. Testimonials anyone?
>
> -Bryan
>
> --- In DSN_klr650@y..., "planetequipment" wrote:
> > I experienced a fuel delivery problem yesterday. I believe it was
> > similar to problems others have posted recently (Bryan?). I ran out
> > of fuel on the main petcock position. Switching to reserve made no
> > difference. Fortunately, the problem occurred only a couple of
> miles
> > from my house.
> >
> > I have a clear plastic (Volkswagen type) fuel filter and also a
> Scott
> > Oiler. The filter never fills up, but generally has about 1/4" of
> > fuel in the lower portion of the filter. I can always see the fuel
> > flowing into the filter.
> >
> > I stopped the bike at the side of the road. There was no gas in the
> > filter. I looked in the gas tank and saw that the gas level was
> just
> > slightly above the main inlet (the bike was on the side stand).
> With
> > the bike upright, the gas was below the inlet. Ah hah! The reserve
> > position on the petcock had to be the culprit. With the bike on the
> > sidestand, I was able to get fuel into the carb. I had to go
> through
> > this routine a couple of times to get home.
> >
> //SNIP//
> > I don't know why fuel wouldn't flow into the float bowl with the
> > filter in place. It hurt me to do it, but I left the filter off.
> My
> > only consolation is that the petcock screens are very fine mesh.
> >
> > Factoid: Fuel mileage is 1 mpfb. That's one mile per float bowl.
> >
> > Ron
>
> Checkout Dual Sport News at
>
http://www.dualsportnews.com
> Be part of the Adventure!
>
> Visit the KLR650 archives at
>
http://www.listquest.com/lq/search.html?ln=klr650
>
> Post message:
DSN_klr650@yahoogroups.com
> Subscribe:
DSN_klr650-subscribe@yahoogroups.com
> Unsubscribe:
DSN_klr650-unsubscribe@yahoogroups.com
> List owner:
DSN_klr650-owner@yahoogroups.com
>
> Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
non linear speedometer error
Posted: Sun May 16, 2010 12:35 am
by Craig Kahler
I have heard the KLR650's speedometer reads about 7% high. Today I did some expermenting with my gps. 40mph indicated = 36mph GPS, 10% error 50mph = 45mph, 10% error 60mph = 55mph, 8% error 70mph = 65mph, 7% error I found it interesting the error decreased as speed increased. But this makes determining actual speed easy. Just subtract 5 MPH. Craig Kahler |