YZF 426 starting problem


15 replies to this topic
  • JAYG

Posted February 21, 2005 - 09:00 AM

#1

hi,
i bought a yzf426 2001 last wednesday, started it on wednesday for 5 min,thursday 5min,and saturday started it to go out on just about to pull off and stalled, and cannot start it since ,all 3 times it took about 10 kicks. :)
The bike has been stood for about a month prior to buying it and is in immaculate condition and been well looked after,do you think ive fouled the plug,or could carb need cleaning
any help would be appreciated
J :)

  • yz426em

Posted February 21, 2005 - 09:26 AM

#2

the other to times u started the bike did it fire right up or was it a pain to get running?

  • JAYG

Posted February 21, 2005 - 09:43 AM

#3

it fired up right away, after about ten kicks,and ran just perfect.

  • sldietz

Posted February 21, 2005 - 10:10 AM

#4

I would say both...put in a new plug and clean the carb...prob some gummed up gas from sitting.

  • JAYG

Posted February 21, 2005 - 11:44 AM

#5

thanks for your replies guys, will my bike be the same or similar to us spec as far as the internals go?
Also the guy i bought the bike off seemed to start it quite easily is there a knack of straiting with the 426,the system Ive used is as follows.
fuel on
choke on
2-3 twists of throttle(half turns)
Pull decompression lever
kick over a few times until minimal resistance is found
kick again just under half kick
return and release comp lever
full hard kick
is this right?
also when Ive washed out the air filter what sort of lubricant do i spray on it
is D 40 OK.
J :)

  • sldietz

Posted February 21, 2005 - 12:13 PM

#6

Don't give it any gas when you start it....you shouldn't need to do that. Leave the throttle alone.

  • 913YZ426MXer

Posted February 21, 2005 - 02:00 PM

#7

sldietz is right......no gas! I have recently had problems starting my '01 YZ426. Had it at the track and found myself changing the plug......one kick later I was riding! You can check the amount of spark by pulling the plug, plugging it back into the sparkplug wire then hold about a 1/4 of an inch away from the engine block (anywhere there is metal), then slowly turn the engine over. A fouled plug will have minimal spark whereas a new one will be obviously different....stronger. Be careful though, DO NOT TOUCH THE PLUG WHEN DOING THIS!!!! You will get shocked. Hold the sparkplug wire instead.

Try to keep a spare CF8E NGK available and tools. Good luck!

  • ONLY4STROKES

Posted February 21, 2005 - 02:38 PM

#8

Probably the plug and/or the carburetor may have varnish (goo) in it.

Doug

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  • yz426em

Posted February 21, 2005 - 03:28 PM

#9

when i go to start mine i never give it gas like the others were saying.
turn the gas on
pull out the choke
pull in the decomp lever
quarter kick down
let up on kickstarter & decomp lever
then kick it

my bike usually starts in one or two kicks, i have never had to pull the decomp lever in and then kick it over until it wasnt as tough
i would try a new plug for sure and get new gas and u should be good to go

  • buck_y_lee

Posted February 21, 2005 - 03:42 PM

#10

You guys don't quite have the starting routine as slick as it could be. Yz426em is risking hitting TDC while kicking, which will mean the bike won't start and it may kick you back. Harmless, but an avoidable annoyance.

Cold:
1. Pull choke.
2. Kick through to Top Dead Centre (ie - the resistance point).
3. Pull decompression lever and kick one inch past TDC.
4. Return kick start lever to top of stroke.
5. Give a full kick to the bottom of the stroke.

Hot:
1. Use hot start if bike has been dropped, otherwise you probably won't need it.
2 - 5 as above.

No throttle - ever. If you do think you may have flooded it and normal hot start routine won't start it, pull the hot start button and decomp lever and kick it through half a dozen times with the kill switch depressed. Then go through normal hot start routine.

  • 913YZ426MXer

Posted February 21, 2005 - 03:54 PM

#11

sldietz is right......no gas! I have recently had problems starting my '01 YZ426. Had it at the track and found myself changing the plug......one kick later I was riding! You can check the amount of spark by pulling the plug, plugging it back into the sparkplug wire then hold about a 1/4 of an inch away from the engine block (anywhere there is metal), then slowly turn the engine over. A fouled plug will have minimal spark whereas a new one will be obviously different....stronger. Be careful though, DO NOT TOUCH THE PLUG WHEN DOING THIS!!!! You will get shocked. Hold the sparkplug wire instead.

Try to keep a spare CF8E NGK available and tools. Good luck!


:) I had a Honda moment there.....CR8E is the correct plug.
My apologies.

  • 01yz426

Posted February 22, 2005 - 12:07 AM

#12

Actually if ur bike has been sitting for a while (more 2-3 days) it would be safe to give er a little throttle just to get a squirt of gas.. That's what I have done since it was new in 2001... Never fouled a plug doing that routine yet.. Oh, besides maybe 2-3 times......

  • hemmerhead

Posted February 22, 2005 - 01:02 AM

#13

Buck-y-lee is absolutely correct about the starting procedure.

Cold:
1. Pull choke.
2. Kick through to Top Dead Centre (ie - the resistance point).
3. Pull decompression lever and kick one inch past TDC.
4. Return kick start lever to top of stroke.
5. Give a full kick to the bottom of the stroke.

Don't even put your hand on the throttle for fear of wanting to twist as you kick. 426 is very tempermental about flooding. One thing I do in addition is when it's been sitting, I pull the decompression lever, hold it as I kick it over (just going thru the motions) about 5-6 times then start the process up top. Fires up every time on 1st or 2nd attempt. :)

  • rakkno

Posted February 22, 2005 - 07:25 AM

#14

If I even think about gas my bike is hard to start........Once you get that magic routine down your bike will start easy every time. Happy trails on your new thumper. You are going to love your 426.

  • JAYG

Posted February 22, 2005 - 11:28 AM

#15

:) thanks for your replies guys i feel very welcome on my first visit to TTC.
Any way down to the problem, i changed the plug this afternoon it was oiled up big time, put in new one and it started first kick couldn't believe it :p took it out for a blast what a bike so much low down torque especially pulling away in high gear i am going to enjoy it for sure, coming from 2stroke 125 and trails bikes the power difference is aw some and I'm going to build myself up slowly as i haven't ridden now for a couple of years, once again thanx to all for your help.
J :)

  • buck_y_lee

Posted February 22, 2005 - 03:11 PM

#16

Good news.





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