Throttle bodies/primaries problem - Kawasaki ZX-10R.net
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post #1 of 13 Old 08-01-2010, 08:36 AM Thread Starter
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Throttle bodies/primaries problem

Renewed my throttle cable recently and somethings not right. The slack in the cable seems to be fine but the bikes not running right.

It has a very rough idle and stalls when opening the throttle. If i start the bike with the throttle opened a bit it runs fine.

What I noticed is that when I start to twist open the throttle i can feel a step in the action of the throttle where the 3&4 primaries and 1&2 primaries open.

Not sure if i explained it well, but when looking at the throttle bodies, i can see the 3&4 primaries open first when i twist the throttle, until the little tab on the wheel where the cables are hits the wheel that opens the 1&2 primaries.

Are the primaries meant to open at exactly the same time? I cant seem to adjust them that way. There is a small hex locknut over an allen key stud that adjusts the slack between the 1&2 and 3&4 primaries but when I adjust it in the bike wants to idle extremely high.

Sorry if its hard to understand my description, I'm not really sure what the wheel is called where the cables attach to
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post #2 of 13 Old 08-01-2010, 08:53 AM
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On an 08 there is a throttle body vacuum synchronization adjustment. What year is yours?

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post #3 of 13 Old 08-01-2010, 09:02 AM Thread Starter
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its an 04 model
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post #4 of 13 Old 08-01-2010, 09:29 AM
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Ok here ya go with zoom-ins on some of the pics. Good luck.
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post #5 of 13 Old 08-01-2010, 10:49 AM
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What you just posted, is that for a 3g or his 1g?

My 08 has 17k on it and has been running a little rough around the edges, and losing power. How often do the TBs get out of sync? I guess I should have it looked at as I don't have a vacuum gauge.

What would be some tell tell signs that my TBs need to be synced?

2008 ZX-10R. | Full Arrow exhaust | PCV | AutoTune | BMC Race | Driven -1+2 520 conversion | Speedohealer | Spiegler braded lines | Carbone Lorraine SBK5 | Dunlop Q3 | more to come.
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post #6 of 13 Old 08-01-2010, 11:42 AM
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Quote:
Originally Posted by IggyBcool View Post
What you just posted, is that for a 3g or his 1g?

My 08 has 17k on it and has been running a little rough around the edges, and losing power. How often do the TBs get out of sync? I guess I should have it looked at as I don't have a vacuum gauge.

What would be some tell tell signs that my TBs need to be synced?
1st Gen

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post #7 of 13 Old 08-01-2010, 11:53 AM
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Quote:
Originally Posted by IggyBcool View Post
What you just posted, is that for a 3g or his 1g?

My 08 has 17k on it and has been running a little rough around the edges, and losing power. How often do the TBs get out of sync? I guess I should have it looked at as I don't have a vacuum gauge.

What would be some tell tell signs that my TBs need to be synced?
I would guess throttle response would be erratic. I got around 16.5K on mine and my throttle is fine. A true way to tell is to get you 1 fancy vacuum meter or four simple ones and check for calibration. A bad TPS would cause throttle issues as well but most likely trigger a error code. if you want I can screen shot the 3rd gen checks/adjustments as well.

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post #8 of 13 Old 08-01-2010, 05:35 PM
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Quote:
Originally Posted by ronnulph View Post
I would guess throttle response would be erratic. I got around 16.5K on mine and my throttle is fine. A true way to tell is to get you 1 fancy vacuum meter or four simple ones and check for calibration. A bad TPS would cause throttle issues as well but most likely trigger a error code. if you want I can screen shot the 3rd gen checks/adjustments as well.
Well, my bike is currently in the shop getting worked on.. Valves adjustment, and everything else that he thinks needs to be adjusted and fixed..

I however, have been experiencing throttle issues.. Say 4-5k. If I would be cruising and then chop the throttle hard, it would want to shutter and hesitate. Other than that, the bike has felt like it has been losing power over time..

2008 ZX-10R. | Full Arrow exhaust | PCV | AutoTune | BMC Race | Driven -1+2 520 conversion | Speedohealer | Spiegler braded lines | Carbone Lorraine SBK5 | Dunlop Q3 | more to come.
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post #9 of 13 Old 08-01-2010, 07:22 PM
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Before I would go into all the hard to DIY things, I would look at the simple stuff. Type of fuel, air filter, plugs,etc,,,,,

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post #10 of 13 Old 08-02-2010, 01:11 AM
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Originally Posted by ronnulph View Post
Before I would go into all the hard to DIY things, I would look at the simple stuff. Type of fuel, air filter, plugs,etc,,,,,
Already done everything that I could do.. literally.

2008 ZX-10R. | Full Arrow exhaust | PCV | AutoTune | BMC Race | Driven -1+2 520 conversion | Speedohealer | Spiegler braded lines | Carbone Lorraine SBK5 | Dunlop Q3 | more to come.
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