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My 2003 Suzuki ltz400 will not fire. We switched the stator, no fire. Got a new coil, no fire. Changed the cdi box, and still yet no fire. What else could it be?

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  • Joe Stanton Apr 23, 2013

    Make Sure That The CDI Is Not Grounded . Grounding Is The Way It Shuts The Engine Down.The Key Switch And The Kill Switch On The Handlebar Is A Series Circuit That Grounds The CDi. Check By Unpluging This Wire At The CDI .It Should Fire In This State. Most Likely A Black Wire.

  • Joe Stanton Apr 24, 2013

    Did You Replace The Pick-Up(PULSE GENERATOR) This Triggers The CDI To FIre. It Should Be Timed At The Flywheel. 8 Degrees Before The T Mark On The FlyWheel. Do Not Over Advance The Timing. The CDI Adjust Itself For Advance Relative To Engine R.P.M.


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It could be a HT lead, try one as cheap check

Posted on May 02, 2015

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You could also have a bad regulator/rectifier.

Posted on Feb 27, 2013

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Can only be compression to low or no fuel being allowed to motor. why did you change all the electric items did it have no spark at plug ??? Anyhow safe to say ignition is fine as all is replaced but worth confirming you have spark at plug (turn motor over with plug out and see if sparks) before we assume its compression or fuel delivery issue.
when you have plug out cover the plug hole with finger to seal it best you can and turn over motor couple of times if you can keep it sealed or nearly sealed then way low on compression and that would be the problem (it should force your finger off and you would have no chance to hold it if compression is adequate) if compression is good then you left will fuel issues.. I know sounds stupid but check all the silly stuff first before you dive right in to all the nuts an bolts. disconnect fuel line see fuel is flowing from tank, check breather hose on tank not kinked or blocked, if you know fuel in it is old throw away and stick new fuel in, if all this checks out good then open her up.
you could also force feed it fuel couple of tea spoons of fuel in the spark plug hole put it back together to start it and see if you get a brief starter or try to start up out of her I know its another back yard test as my back yard compression test is but at least it isolates some areas to work on.. cheers mate

Posted on Oct 28, 2012

  • Danny castle
    Danny castle Apr 29, 2015

    chang your kill switch


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Posted on Jan 02, 2017

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SOURCE: need cdi wiring diagram for suzuki 900

hi m8,,give these guys a try,,

Posted on May 03, 2009

  • 1 Answer


Hey whats up? Try back probing your wires going to the CDI unit with a volt meter or continuity tester to make sure you do have any broken wires. Then check the stater make it is good. If sure how to check the starter take it a bike repair shop they should check it for free.. If that does work let me know and I will look further into it for you. Good Luck.

Posted on May 22, 2009

ollie reece
  • 1167 Answers

SOURCE: my kx250f has no spark after replacing wire

are you getting power to these items best to check this before you carry anyfurther

Posted on Oct 07, 2009

  • 376 Answers

SOURCE: no spark, changed the coil, is there any way to

There is a way to test a CDI box but you will have to take it to a shop that has the equipment to do this. I own a motorcycle/Atv repair shop and I don't own one cause they cost allot and I can't justify getting one.

Posted on Oct 16, 2009

  • 4565 Answers

SOURCE: suzuki gn125 wont start. checked carb, cdi, coil.

Check the valve adjustment. If a valve is standing open just a little, the compression will be too low to start the engine. Check fuel delivery by dribbling a little gasoline into the carb and try starting the bike. If it starts and runs for a second or two, you're not getting fuel into the cylinders. Check you carb again.

Posted on Oct 19, 2009

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