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bike not idling
- ar20024u
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20 Aug 2015 14:31 #686512
by ar20024u
bike not idling was created by ar20024u
I got a 84 gpz550 with a stage 3 jet kit and unifilter pod filters, and a kerker megaphone. bike was running fine but leaking fuel from the horizontal connection pipe. orings bad. I took the 4 carbs off and replaced the orings.
now all put together, the bike does not want to idle. it will run only on full choke. I have the 4 vacuum pipes open. is that a cause? do I need to connect the 2 vacuum pipe to the evap control system and 2 to the fuel tap? I was going to use a homemade sync tool to sync the carb since I took them apart.
any ideas suggested what I need to do for it to run fine. the air screws are out 3.5 turns.
now all put together, the bike does not want to idle. it will run only on full choke. I have the 4 vacuum pipes open. is that a cause? do I need to connect the 2 vacuum pipe to the evap control system and 2 to the fuel tap? I was going to use a homemade sync tool to sync the carb since I took them apart.
any ideas suggested what I need to do for it to run fine. the air screws are out 3.5 turns.
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- SWest
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- 10 22 2014
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20 Aug 2015 14:36 #686514
by SWest
Replied by SWest on topic bike not idling
Plug them. One should go to the petcock.
Steve
Steve
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- Irish Yobbo
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20 Aug 2015 17:01 #686538
by Irish Yobbo
1981 KZ750 LTD
Replied by Irish Yobbo on topic bike not idling
As a disclaimer I don't know these carbs - but the vacuum pipes on every carb I know shouldn't be left open. They will let air into the carb - under load the amount of air usually isn't enough to seriously change things, but at idle it is very noticeable.
Anything that attaches to the vac pipes should provide resistance - if it's connected to a vac advance unit, it's really just providing negative pressure, not allowing any air in. In my car I use a vac line to feed flash-lube into the fuel, since it's such a small amount and feed very slowly, it's effectively no different to having the port plugged.
Anything that attaches to the vac pipes should provide resistance - if it's connected to a vac advance unit, it's really just providing negative pressure, not allowing any air in. In my car I use a vac line to feed flash-lube into the fuel, since it's such a small amount and feed very slowly, it's effectively no different to having the port plugged.
1981 KZ750 LTD
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- Patton
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20 Aug 2015 17:47 #686545
by Patton
1973 Z1
KZ900 LTD
Replied by Patton on topic bike not idling
See following links courtesy of KZr Member loudhvx
General
home.comcast.net/~loudgpz/GPZweb/index.html#home
Service manuals
home.comcast.net/~loudgpz/GPZweb/Mnls/Mnls.html
Good Fortune!
General
home.comcast.net/~loudgpz/GPZweb/index.html#home
Service manuals
home.comcast.net/~loudgpz/GPZweb/Mnls/Mnls.html
Good Fortune!
1973 Z1
KZ900 LTD
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- Patton
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20 Aug 2015 17:54 #686547
by Patton
1973 Z1
KZ900 LTD
Replied by Patton on topic bike not idling
The "Clean Air" paraphernalia isn't necessary and is easily removed.
When left installed, the system adds to sources of possible air leaks. :pinch:
Good Fortune!
When left installed, the system adds to sources of possible air leaks. :pinch:
Good Fortune!
1973 Z1
KZ900 LTD
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- aarb77
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29 Aug 2015 15:21 #687666
by aarb77
RB
Replied by aarb77 on topic Re:bike not idling
Patton does this also work the same with the 82 KZ550 LTD with TK Carbs? Should these be plugged? I am getting alot of black smoke. I have a thread open and could use some help, running rich.
RB
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