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Twinkles
50cc nipper
Joined: 23 Oct 2011
Posts: 9
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 Posted: Sun Oct 23, 2011 9:17 pm Post subject: Stalling, won't idle Suzuki 450 Kingquad |
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I have a 2006, fuel injected, Suzuki 450 Kingquad for the farm. It was going fine when I purchased it a few months ago, but has developed the problem of stalling when left to idle. I replaced the spark plug and air filter. Slight improvement. Put it in to be serviced. The mechanic said he would investigate with Suzuki. He suggested fuel sensor or exhaust sensor as possibilities. As it is fuel injected I have no clue what to do as he hasn't found out anything since.
Any suggestions on what may be problem or where to make further enquiries? |
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Sponsor
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wa5
Big Bore, Stroked & Bling +
Joined: 06 Nov 2007
Posts: 446
Location: Port Stephens
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| Posted: Sun Oct 23, 2011 10:43 pm Post subject: |
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How old is the fuel in the tank.... if its over 6 weeks replace it with new...
Fuel goes "off" a lot quicker than it used to....
I would also suggest if you leave the bike idle for a while... that you run it on Premium IE, fuel that does not contain ethanol, it seems to go "off" quicker (in my opinion). |
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dangerman4
Roostin Away
Joined: 31 Mar 2007
Posts: 854
Location: Morphett Vale
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| Posted: Mon Oct 24, 2011 11:41 am Post subject: |
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how long does it idle for before it stalls?
5 seconds, 30 seconds, 2 minutes?
this will change my diagnosis... |
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Twinkles
50cc nipper
Joined: 23 Oct 2011
Posts: 9
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| Posted: Mon Oct 24, 2011 5:08 pm Post subject: |
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| When starting. It has become difficult to keep running now. |
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Twinkles
50cc nipper
Joined: 23 Oct 2011
Posts: 9
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| Posted: Mon Oct 24, 2011 5:08 pm Post subject: |
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| The fuel is fresh |
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dangerman4
Roostin Away
Joined: 31 Mar 2007
Posts: 854
Location: Morphett Vale
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| Posted: Mon Oct 24, 2011 6:03 pm Post subject: |
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| so if its hot or cold it still stalls? not temperature related im saying? |
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Twinkles
50cc nipper
Joined: 23 Oct 2011
Posts: 9
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| Posted: Mon Oct 24, 2011 6:50 pm Post subject: |
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| not temperature related |
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yogie
Moderator
Joined: 14 Feb 2006
Posts: 3620
Location: The Otways
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| Posted: Mon Oct 24, 2011 7:04 pm Post subject: |
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| Twinkles wrote: | | not temperature related |
you are now aproved so please ask all your questions in one post 
_________________
2005 KFX700
With a few bells and whistles
and the twin yoshi's 
American Star A-arms, tie rods
elka stickers
Shorty Shifter
I have a Waco
rossco gave me a flexx sticker 
honda thumb
Great at climbing trees 
durablue stickers |
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bullet
The Day Starts With OZATV !
Joined: 09 Sep 2006
Posts: 1518
Location: Middleton SA
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| Posted: Mon Oct 24, 2011 9:23 pm Post subject: |
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Could be temp sensor related. If the sensor still thinks it's cold (wrong signal to ECU) then it may idle rich all day, or until it fouls up.
Does it clean up after a good high speed run and idle ok until it clags up again after a while.
Another high speed / high load run and it cleans the plug up again until left idling again.
maybe ???
_________________
Can-Am X Team
Bullet #Y12. MrsB #Y18. |
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keeg
Blaster class
Joined: 21 May 2008
Posts: 110
Location: kyabram, vic
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| Posted: Mon Oct 24, 2011 9:45 pm Post subject: |
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| sounds like it is a blocked fuel filter on the fuel pump, can be checked by checking fuel pressure both on start up & running. if low means damaged fuel pump or blocked filter.turns in to a big job to check as you have to remove rear guards & remove fuel tank, but as it is an older bike wouldnt hurt to do it as then you will know. |
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Twinkles
50cc nipper
Joined: 23 Oct 2011
Posts: 9
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| Posted: Mon Oct 24, 2011 10:42 pm Post subject: |
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| same all the time, even when working hard. |
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Twinkles
50cc nipper
Joined: 23 Oct 2011
Posts: 9
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| Posted: Mon Oct 24, 2011 10:43 pm Post subject: |
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| keeg. I did ask mechanic to check fuel filter. Definately fuel feed. It went back today to have more computer diagnostics. |
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Linc
Roostin Away
Joined: 17 Feb 2006
Posts: 999
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| Posted: Tue Oct 25, 2011 11:14 am Post subject: |
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The Kingquad has an in tank car type fuel pump with a filter over the end of it. Sometimes these get clogged up with dirt.......Its common.
You need to remove the tank and then remove the whole fuel pump/filter assembly (its a simple job) The filter unit can be ordered from Suzuki OR take it down to Repco (for about 1 tenth of the price) as I know some car units fit.
Linc |
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Twinkles
50cc nipper
Joined: 23 Oct 2011
Posts: 9
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| Posted: Tue Oct 25, 2011 1:21 pm Post subject: |
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| Rang mechanic this morning. He said he checked fuel flow and it was ok. |
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dangerman4
Roostin Away
Joined: 31 Mar 2007
Posts: 854
Location: Morphett Vale
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| Posted: Thu Oct 27, 2011 3:21 pm Post subject: |
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| remove and clean all the earth straps between battery-motor and battery to chassis. eliminnate all the simple things first... |
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phrozin
Blaster class
Joined: 15 Jan 2008
Posts: 111
Location: earth
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| Posted: Thu Oct 27, 2011 3:45 pm Post subject: |
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| Get your mec to check the tps voltage. temp sensor defult when buggered joy of fi quads been there done that play merry hell when there doggy |
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feralkid
The Day Starts With OZATV !
Joined: 29 Oct 2007
Posts: 1567
Location: North Western Victoria
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| Posted: Thu Oct 27, 2011 4:50 pm Post subject: |
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| phrozin wrote: | | Get your mec to check the tps voltage. temp sensor defult when buggered joy of fi quads been there done that play merry hell when there doggy |
Anyone got an English translation for that last sentence. 
_________________
"If in doubt go flat out"
"Nothing worth having is easy to get" |
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Twinkles
50cc nipper
Joined: 23 Oct 2011
Posts: 9
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| Posted: Thu Oct 27, 2011 6:08 pm Post subject: |
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| Full computer fault analysis been done. Currently checking fuel pump, next stop, must be computer glitch. |
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dangerman4
Roostin Away
Joined: 31 Mar 2007
Posts: 854
Location: Morphett Vale
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| Posted: Thu Oct 27, 2011 7:32 pm Post subject: |
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| again check all your earths, at idle voltage may be dropping to the point the ecu shuts down, or fuel pump etc. when the bike revs it makes more voltage = no problem. |
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phrozin
Blaster class
Joined: 15 Jan 2008
Posts: 111
Location: earth
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| Posted: Fri Oct 28, 2011 2:18 pm Post subject: |
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| feralkid wrote: | | phrozin wrote: | | Get your mec to check the tps voltage. temp sensor defult when buggered joy of fi quads been there done that play merry hell when there doggy |
Anyone got an English translation for that last sentence. |
the ecu have a default value dude if the temp sensor is not working wont cause the symptom he describes but you knew that hey 
i did not say check the ecu i said get your mechanic to check the tps voltage (output) whole range also does a king quad have a exhaust sensor ?
take it to a Suzuki dealer |
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PeteW
Moderator
Joined: 09 Feb 2006
Posts: 1877
Location: Doreen, Vic
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| Posted: Wed Nov 02, 2011 8:00 am Post subject: |
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| Twinkles wrote: | | Full computer fault analysis been done. Currently checking fuel pump, next stop, must be computer glitch. |
in my experience with EFI quads symptoms like this are almost always fuel pump related. Fuel pressure for most EFI bikes/quads should be around 39 to 49 PSI depending on the model and if it is more than 2 or 3 PSI below its spec can cause the sort of problems you are having. For example a Polaris RZR fuel pump needs to have 39 PSI but one measured at 35/36 PSI, the RZR wouldn't idle and needed the throttle opened to start and ran rough when it was running. Replace fuel pump, starts, idles etc...
_________________
www.thumbpump.com
www.dirtcomp.com.au |
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Wadey
4fiddy Racer
Joined: 17 Apr 2007
Posts: 261
Location: Colac, Victoria
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| Posted: Mon Dec 05, 2011 8:33 pm Post subject: KQ |
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| Petes right, fuel pump needs to hold about 42- 45 PSI ( from memory ) even at decent throttle. --- dirty fuel destroys pumps quickly and this is definitely the most common problem. Can't recall exactly but I think this model has a "stepping up" motor ,( ISC ), on the throttle body. there is a factory service bulletin about cleaning these things properly and not to use some of the aggressive carb cleaners that can damage its internals. When they get gummed up the idle becomes erratic. |
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goonba
50cc nipper
Joined: 30 Jan 2012
Posts: 1
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| Posted: Mon Jan 30, 2012 4:02 pm Post subject: |
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| hi |
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yogie
Moderator
Joined: 14 Feb 2006
Posts: 3620
Location: The Otways
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| Posted: Mon Jan 30, 2012 4:05 pm Post subject: |
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Hi back at you, 4 more to go fella 
_________________
2005 KFX700
With a few bells and whistles
and the twin yoshi's
American Star A-arms, tie rods
elka stickers
Shorty Shifter
I have a Waco
rossco gave me a flexx sticker
honda thumb
Great at climbing trees
durablue stickers |
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