Discussion:
Keihin CV problem
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Jon
2013-07-22 00:59:14 UTC
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I installed a Keihin CV on my knucklehead and it runs great, just won't
start unless I pour gas into the carburetor. After pouring the gas in it
starts right up with one or two kicks. Once it is started and warmed up
it runs and idles flawlessly.

Any ideas?
Terry Coombs
2013-07-22 01:55:45 UTC
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Post by Jon
I installed a Keihin CV on my knucklehead and it runs great, just won't
start unless I pour gas into the carburetor. After pouring the gas in it
starts right up with one or two kicks. Once it is started and warmed up it
runs and idles flawlessly.
Any ideas?
Does that CV have an accelerator pump ? If not , get one that does . Had a
pump-less one on my '88 Sportster , only way to start it in really cold
weather <below 35 deg or so ...> was to pull a plug and dribble some gas in
.
--
Snag
My Ultra has
a pump ...
Jon
2013-07-22 02:00:15 UTC
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Post by Terry Coombs
Post by Jon
I installed a Keihin CV on my knucklehead and it runs great, just won't
start unless I pour gas into the carburetor. After pouring the gas in it
starts right up with one or two kicks. Once it is started and warmed up it
runs and idles flawlessly.
Any ideas?
Does that CV have an accelerator pump ? If not , get one that does . Had a
pump-less one on my '88 Sportster , only way to start it in really cold
weather <below 35 deg or so ...> was to pull a plug and dribble some gas in
Yes it does have the accelerator pump.
Terry Coombs
2013-07-22 02:27:12 UTC
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Post by Jon
Post by Terry Coombs
Post by Jon
I installed a Keihin CV on my knucklehead and it runs great, just won't
start unless I pour gas into the carburetor. After pouring the gas in it
starts right up with one or two kicks. Once it is started and warmed up it
runs and idles flawlessly.
Any ideas?
Does that CV have an accelerator pump ? If not , get one that does . Had a
pump-less one on my '88 Sportster , only way to start it in really cold
weather <below 35 deg or so ...> was to pull a plug and dribble some gas in
Yes it does have the accelerator pump.
Pull the air filter and twist the throttle . If you do not see a stream of
gas coming from near the inlet the pump is not working properly . Try a
"twist kick<while holding the throttle wide open> with the ignition off for
a prime if you do see that stream of gas . Next kick with throttle closed
and ig on ...
--
Snag
Not that I've ever
kick-starter
a Harley ...
Jon
2013-07-23 00:05:34 UTC
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Post by Terry Coombs
Post by Jon
Post by Terry Coombs
Post by Jon
I installed a Keihin CV on my knucklehead and it runs great, just won't
start unless I pour gas into the carburetor. After pouring the gas in it
starts right up with one or two kicks. Once it is started and warmed up it
runs and idles flawlessly.
Any ideas?
Does that CV have an accelerator pump ? If not , get one that does . Had a
pump-less one on my '88 Sportster , only way to start it in really cold
weather <below 35 deg or so ...> was to pull a plug and dribble some gas in
Yes it does have the accelerator pump.
Pull the air filter and twist the throttle . If you do not see a stream of
gas coming from near the inlet the pump is not working properly . Try a
"twist kick<while holding the throttle wide open> with the ignition off for
a prime if you do see that stream of gas . Next kick with throttle closed
and ig on ...
There is absolutely no gas going in via the accelerator pump. Do you
know how to go about fixing it?
Terry Coombs
2013-07-23 00:12:54 UTC
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Post by Jon
Post by Terry Coombs
Post by Jon
Post by Terry Coombs
Post by Jon
I installed a Keihin CV on my knucklehead and it runs great, just won't
start unless I pour gas into the carburetor. After pouring the gas in it
starts right up with one or two kicks. Once it is started and warmed up
it
runs and idles flawlessly.
Any ideas?
Does that CV have an accelerator pump ? If not , get one that does
.
Had a
pump-less one on my '88 Sportster , only way to start it in really cold
weather <below 35 deg or so ...> was to pull a plug and dribble some
gas
in
Yes it does have the accelerator pump.
Pull the air filter and twist the throttle . If you do not see a stream of
gas coming from near the inlet the pump is not working properly . Try a
"twist kick<while holding the throttle wide open> with the ignition off for
a prime if you do see that stream of gas . Next kick with throttle closed
and ig on ...
There is absolutely no gas going in via the accelerator pump. Do you
know how to go about fixing it?
Read Snarl's advice . He knows whereof he speaks , rides a Knuck . I ride
an Evo with a 'lectric leg . And a stereo ...
--
Snag
naws
2014-03-19 17:20:31 UTC
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Is this a Keihin CVK? The obvious thing to check would be that the
enricher circuit ("choke") is connected and working. And just a tip on
testing instead of "pouring gas" into a carb (especially a side draft like
your CV(K) is to use a propane torch as the source of fuel (UNLIT OF
COURSE)......clean and efficient....also a good way to see whether your carb
is lean or rich.

Gord
Post by Jon
I installed a Keihin CV on my knucklehead and it runs great, just won't
start unless I pour gas into the carburetor. After pouring the gas in it
starts right up with one or two kicks. Once it is started and warmed up it
runs and idles flawlessly.
Any ideas?
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