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Author Topic: Adjusting Idle speed on EFI bike  (Read 44624 times)

HyoFuelNazi

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Re: Adjusting Idle speed on EFI bike
« Reply #20 on: February 11, 2010, 10:08:18 AM »

Is the screw you did definitely the throttle stop?

Could be that the idle RPM is ECU controlled , in which case you are somewhat stuffed cos the ECU will be countering the throttle stop adjustment, or any other input, by opening up a small inlet separate to the main butterfly.
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BikeBandit.com

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Re: Adjusting Idle speed on EFI bike
« Reply #21 on: February 11, 2010, 09:31:59 PM »

Ok. Reset your idle screw to its original position.

Do you have the FI Service Manual?

If so you will need to check (and possibly adjust) your throttle position sensor.

If you do not have the FI Service Manual, let me know and I will send you the information you need.

All you will need is a voltmeter to check the voltage at the TPS
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BradCCM

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Re: Adjusting Idle speed on EFI bike
« Reply #22 on: February 19, 2010, 05:48:45 AM »

I would think that your problem has nothing to do with the idle speed. 1400RPM is ok for the bike. If it is not staying stable and dropping off to 1000RPM then shutting off, then there is a different problem. Could be the ECU, a vacuum leak, torn intake boot or the intake boot is not sealed to the head, or the throttle position sensor is not adjusted properly like the 2009 bikes, witch had the identical problem (the fix for the 2009 was to adjust the throttle position sensor on all 650cc FI models).  But I would not say the tip-over switch, the bike would not have an unstable idle, it would just shut off ( the tip over switch is the same as the engine shut off switch, its on or off).  I also would not say that it is the fuel pump because it would have running issues at all rpms regardless of the temp of the bike, and it sounds like the bike runs good until it gets hot.

 I have not seen the new fuel injection, and was very upset when they changed it (Hyo got a long letter from me about that).  This system is based off of the Daewoo car, which obviously has never been used on a motorcycle.

My Questions for you would be...

 Do you get any FI warning lights? Does your dealer have the HYO hand held computer for the 2010 bikes? If so, is your bike logging any fault codes? If you want to raise the idle it may have to be raised by the hand held computer only (that is how Honda's work, we have 2 CBR600 in our shop right now with very high idles and we can not do anything about it).
« Last Edit: February 19, 2010, 08:18:57 AM by BradCCM »
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CodeMonkey

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Re: Adjusting Idle speed on EFI bike
« Reply #23 on: March 10, 2010, 04:20:30 AM »

I finally stopped delaying and brought the bike back into the dealer. After a couple of days they've identified that the rectifier wasn't working very well at high temps - not keeping the voltage up.

Sounded about right when he was explaining it to me. Said he had to get the bike really hot and then the voltage dropped.

Might get the bike back early next week.


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veka84sb

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Re: Adjusting Idle speed on EFI bike
« Reply #24 on: March 10, 2010, 07:47:51 AM »

I have 08 EFI and my problem was same as your! Decide to solve problem my self instead taking it to service (they really have no idea about bikes ) .
Probably your repair man have no idea what to do so he trying replacing parts!
Your bike is ok ,problem is in one screw that lose because of v2 vibrations!
My idling rpm was about 1350-1450 top when bike is heated!
After some testing i discover that rpm must be at least 1500-1600 that bikes don't turn off
(it has to be that high because low rpm ecu map is a/f ratio is too low)

1. put down gas tank
2. check screw on right side of bike ,on throttle body looking from up! One screw will have white line on self and under it self (factory mark for 1500rpm) line screw with white mark (probably 1/4 turn)
3. Assembly gas tank

4 . thats all folks!

Warning!!! Setting idle speed is not so simple if you done some chances to stock bike!
Have to set up idle details if described method does not have affect search on Google for Suzuki DL and SV efi idle setup. Because they use same throttle body's    

*shit ,I needed 45min to wrote this!
« Last Edit: March 10, 2010, 08:04:57 AM by veka84sb »
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"It's not the speed that kills, but sudden stopping!" - Jeremy Clarkson TOP GEAR!

newbymick

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Re: Adjusting Idle speed on EFI bike
« Reply #25 on: March 10, 2010, 08:33:38 AM »


*shit ,I needed 45min to wrote this!


You did well.  I understood every word of it and you've done better than most  ;D ;D

A+

Mick S
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veka84sb

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Re: Adjusting Idle speed on EFI bike
« Reply #26 on: March 10, 2010, 09:08:41 AM »

Thanks ,that means lot to me !  :)
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"It's not the speed that kills, but sudden stopping!" - Jeremy Clarkson TOP GEAR!

BradCCM

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Re: Adjusting Idle speed on EFI bike
« Reply #27 on: March 10, 2010, 10:22:29 PM »

veca84sb

I know all of the bikes here in the USA we had to readjust the Throttle Position Sensor (TPS) in order to stop the bike from stalling at idle.  I would think that your bike it has the same FI system that we saw here in the states in 2009.  By adjusting it we ended up with more power and smother/crisper throttle response.  Is that something that was done on your bike? or something that is recommended for it by Hyosung?  It sounds like you have it to the point that it does not stall but it may be a good idea to ask your dealer if your TPS needs to be adjusted.  :)
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veka84sb

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Re: Adjusting Idle speed on EFI bike
« Reply #28 on: March 11, 2010, 09:38:29 AM »

First my experience with dealer is extremely bad ...in fact so bad that they will never see my bike again!!!

From day 1
Problem was , if I  pull  clutch over 3000-4000 rpm when motorbike is not on working temp but heated enough too lower rpm  it dies! After some short (about 500km ) time that start to happen more often ,even on working temp! At about 1500km problem has become so annoying and sometimes hyo having problems to start on lower temp (at night hours ) Then I start to learn about TPS and all parts what can be source of problem! After took down gas tank and inspecting throttle cables and screw factory marks, I  discover that my throttle cables are too lose and one screw is in different position than mark on it. Correcting that ,my hyo lose all it's problems and newer turn off again .No more problems starting bike in any conditions!

All try in next day or two take some photos or video clip to show how it work and what I have done.

About TPS : My TPS is probably not perfect( pretty close) ,but can't find precise information to make it work bether than it's work now.




EDIT : Link that describe TPS correction on SV 650
 http://forums.sv650.org/showthread.php?t=55459
  

  


 
« Last Edit: March 11, 2010, 09:52:50 AM by veka84sb »
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"It's not the speed that kills, but sudden stopping!" - Jeremy Clarkson TOP GEAR!

BradCCM

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Re: Adjusting Idle speed on EFI bike
« Reply #29 on: March 11, 2010, 06:29:35 PM »

Your symptoms are exactly what the problem are if the TPS is not adjusted by the dealer. It should have been adjusted by right when the bike came out of the crate. I am very sorry to hear about your dealer.  Is there another dealer that you can go to to get the adjustment done. You have to have a special tool in order to check it.
I wish I could put a link to it for you.  The best way to do it is with a volt meter and adjust it to a reading of  1.23 1.25 volts. The other way is to hook up a special tool to the diagnostics and the tach/gauge shows you when it is adjusted, but it is not near as accurate than setting it by volts.  The bike will run 10 times better if you can get it done. It should be covered by warranty to get it done or checked.

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