Question about 2003 Yamaha YZ 250 F

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When riding my yz250f 2002 it will quit running after it sits awhile it will start again. is this cdi problem?

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Probably the coil stick. I had the same problem. £70 brand new or £30 off ebay

Posted on May 09, 2009

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The coil is breaking down replace it

Posted on Mar 04, 2009

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2004 Honda VT 1100 C2 Sabre starts fine but acts like its running out of gas after riding a half mile. Let it sit for awhile and It will ride for another half mile then stop again. I have changed the fuel...


Next time it does this, remove/open the gas cap and see if that helps.
If so, then the venting system for the gas tank is plugged somewhere, and you're vapor locking.

Oct 26, 2013 | 2001 Honda VT 1100 C2 Shadow Sabre

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I have a big problem with my YZ250F 2008, I installed the aluminum radiator protectors and by mystake I forgot to refill the radiators with anticoolant... so Yeah, I went for my Sunday common ride and...


Assuming it all back together correctly as you had so much practice now I sure all your timing set correct and your valves clearance are all spot on
There is a few things I would be attempting firstly being its virtually brand new motor I would be checking your stator with multimeter testing its resistance readings - let me know if you want info on this ?
if the stator all good then I would be suspicious of the CDI unit especially as you have cooked motor beneath it the heat could have killed it ?
if these two theory fail then your next option would have to be leak down test to confirm your new head is sealing valves in it are sealing and you not losing compression past the rings
From what you have written I would be mostly concerned with electrical side first Dont be fooled either just because spark plug has a spark does not mean stator and CDI are correct?
have you tested kicking over with spark plug laying on head bolt or something is it sparking at all?
regards Jamie

Sep 07, 2011 | 2008 Yamaha yZ250F

1 Answer

My 2002 r6 will shut off while riding? please help.


Start by checking your right hand switch (kill switch) and make sure that it works ok.
Put it in "run" position,start the engine and try to move it sideways without pressing it to "off" position.If necessary remove it and check inside for rust or moisture signs.

Jul 03, 2009 | 2001 Yamaha YZF-R6

1 Answer

Was riding and just quit running cant get spark yamaha 2002 yfm 400 atv 2 wheel drive


This is the order in which you should check the following
  1. Check fuses(If all are good,Continue down the list)
  2. Check for power from the stator while turning the engine over(If you have power continue down the list)
  3. Check coil (Check voltage input while turning engine over)(if no voltage continue down the list)
  4. Check CDI (The only way to test is to try on another atv of the same year and model)
Please take time to rate this fixya

May 13, 2009 | 2002 Yamaha XJR 400 R

1 Answer

2001 yamaha R6 will die out on me while riding


Hi there!

dont give up on it yet. the CDI costs much! This sounds like a wiring problem. I've had the same problem before but i checked and traced the wiring and found out that the positive lead wire is making contact with the chassis.. due to vibration and just, it must have eaten the insulator. Check on this part. Also, make sure that your carb jets and spark plugs are clean.

-hope this gives you an idea.
-levibit

Apr 01, 2009 | 2001 Yamaha YZF-R6

1 Answer

No headlight,signal light,tail lights, or speedometer power.


id say it was a fuse or maybe cdi box take an ohm meter and check it out man see what happends

Mar 06, 2009 | 2001 Yamaha V Star 1100 Classic

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