KZR's Bikes of the Month for 2024

Extremely high rpms on start.

  • Scirocco
  • Offline
  • Premium Member
  • Never change a running system
More
07 Oct 2021 12:44 - 07 Oct 2021 12:46 #856326 by Scirocco
Replied by Scirocco on topic Extremely high rpms on start.

I didn't even notice that. Thank you! This probably won't fix the issue but never the less it needs to be fixed. 
Trust me, it will fix your high rpms!!! If you think so leave it as it is
Last edit: 07 Oct 2021 12:46 by Scirocco.
The following user(s) said Thank You: Nessism

Please Log in or Create an account to join the conversation.

More
07 Oct 2021 14:24 #856332 by Qsmothers3
Replied by Qsmothers3 on topic Extremely high rpms on start.
It definitely helped! Now it idles at 3000 and not 6000. Still gotta figure out how to get it even lower though

Please Log in or Create an account to join the conversation.

  • Scirocco
  • Offline
  • Premium Member
  • Never change a running system
More
07 Oct 2021 22:47 #856350 by Scirocco
Replied by Scirocco on topic Extremely high rpms on start.
Did you try to back out the idle adjustment screw?

 

Please Log in or Create an account to join the conversation.

More
08 Oct 2021 06:14 #856356 by Qsmothers3
Replied by Qsmothers3 on topic Extremely high rpms on start.
Yeah its backed all the way out. Its gotta be a vacuum leak some where...I just don't know where.

Please Log in or Create an account to join the conversation.

More
08 Oct 2021 06:36 #856358 by Nessism
The following user(s) said Thank You: Qsmothers3

Please Log in or Create an account to join the conversation.

More
08 Oct 2021 09:04 #856368 by Qsmothers3
Replied by Qsmothers3 on topic Extremely high rpms on start.
Yes the airbox is installed with new air filter. Do you think soaking the filter in sae 30 oil will help?? 

Please Log in or Create an account to join the conversation.

More
08 Oct 2021 09:06 #856369 by Qsmothers3
Replied by Qsmothers3 on topic Extremely high rpms on start.
When you say filter inside air box do you mean there is supposed to be a filter inside the air box and inside the filter cap above the air box? I only have one filter and it is in the filter cap above the air box. 

Please Log in or Create an account to join the conversation.

  • Scirocco
  • Offline
  • Premium Member
  • Never change a running system
More
08 Oct 2021 09:58 #856374 by Scirocco
Replied by Scirocco on topic Extremely high rpms on start.
Did you sync the the carb butterflys by service manual?
Are both butterflys fully closed? a pic would help

Please Log in or Create an account to join the conversation.

More
08 Oct 2021 11:45 #856376 by Rick H.
Replied by Rick H. on topic Extremely high rpms on start.
Just to follow up on what Scirocco said, can you actually get to a point with the carbs on the bike where you can see the butterfly valves?  If so, what position are they in?  Open or closed?  If open, how much are they open?  From a personal standpoint, I have never seen a vacum leak cause a 3,000 RPM jump in engine speed, let alone a 6,000 RPM jump.  Not unless you are feeding jet fuel into the vacum leak.  Something else is going on with your carbs and I believe you need to go back to square #1 and bench syncing them.  Then install and adjust.  Just my humble opinion.

Rick H.
 

Rick H.

1977 Kawasaki KZ-1000A1
The following user(s) said Thank You: Scirocco

Please Log in or Create an account to join the conversation.

More
08 Oct 2021 18:44 #856401 by TexasKZ
Replied by TexasKZ on topic Extremely high rpms on start.

1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24

Please Log in or Create an account to join the conversation.

More
09 Oct 2021 15:04 #856450 by Qsmothers3
Replied by Qsmothers3 on topic Extremely high rpms on start.
Update!! I took the carbs off, bench synced them and low and behold the ol girl fired right up! Idle is at a cool 1100 rpm! Took it out for a spin and it has great throttle response all around a smooth ride! Need to get some new tires and I think she's ready to hit the road!! Thank you all for your help!! 

Please Log in or Create an account to join the conversation.

More
09 Oct 2021 15:22 #856454 by Nessism
Replied by Nessism on topic Extremely high rpms on start.
Great job!  Maintenance for the WIN.  Father Kawasaki (service manual) knows best!

BTW, now do a vacuum sync for the final tune.

Please Log in or Create an account to join the conversation.

Powered by Kunena Forum

If you like KZR Please consider making a donation. Thank you.

KZRider is free, but not without cost.

Please consider chipping in a few bucks to help cover the cost of running the KZR servers.