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Roketa 125cc wont start! spark plug is not giving off spark?

I am trying to get this pit bike started for the first time since winter. i have changed the fuel out and changed the spark plug. it sounds like it wants to turn but wont crank up. took out the spark plug and put it against the engine and you can not see a spark coming off. the hole for the spark plug still has compression and can feel it blowing ur finger out when trying to kick start it. any help would be greatly appreciated.... my son is dying to ride and i am at a loss. thanks for your help!!!!!

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  • Master
  • 542 Answers

Check the lead and connections between the coil and the plugs, the battery and the coil. If all else fails check the battery charge.

Posted on May 08, 2013

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Posted on Jan 02, 2017

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SOURCE: Wr250f 2005 Starting Problem

maybe the carburator is dirty? fuel filter clogged?

Posted on Mar 08, 2009

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SOURCE: 95 Honda CBR 900 rr will not start.

Definatly a good tune up would help, but it also sounds as if you may have a bad stator. I would check the voltage at the battery and see if it goes up and down when accelorating.

Posted on Mar 11, 2009

  • 3567 Answers

SOURCE: bike wont start

Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two screws down. Only screw these in until they LIGHTLY seat. Now turn each screw one and one half turns outward. Clean the air filter. Install a new stock NGK spark plug.

Please rate this solution. Thanks!

Posted on Apr 19, 2009

  • 68 Answers

SOURCE: scooter wont start

carb could be clogged with trash even though fuel is gettin to carb the main jet could be blocked not letting fuel enter intake

Posted on Aug 02, 2009

  • 167 Answers

SOURCE: My son's bike just wont start. All of the normal

Tabbycat 282 s comments are right on the money!!
The three systems for any engine to run are fuel,mechanical, & electrical so we need to narrow it down to 1. It seem like you got one of those faults that just dosn't want to show itself.
Try as he/she & I suggested with introducing some fuel to the cylinder.
If that dosn't work, try removing the plug,(remove the airfilter also) blow down the spark plug hole with compressed air,fit a new plug(a std & not a racing plug is ok for this),re-introduce some fuel & try again(with the airfilter still removed).If it still dosn't go do also as tabbycat says and check the ignition timing next.
This could be a bit tricky as it's not running.
Hmm let me see!!!
Try hooking up an induction timing light. The type that has a pickup that clips over the lead.If it has leads to connect to a battery(& your bike dosn't have a battery) just hook it up to any 12v battery.
Now with the plug removed and resting on the head to earth it give it a kick while aiming the timing light at the magneto(cover removed)Hopefully when you've removed the cover it you can find some timing marks this may help to verify that the ignition timimg is correct.If you have a flywheel(magneto) puller pop it off before trying the timing light. It may have sheared the flywheel woodriff key & if the shop didn't remove the magneto/flywheel how would they know wether it has sheared it.(which would put the timing out)
Try get all the info on the things they "changed" & let us know exactly what they did!!
get back to us if your still having trouble & we'll see if we can come up with some other suggestions.
Regards Andrew Porrelli
PS when you check it for spark, the spark should be a fat, sharp blue coloured spark and not lazy, intermittent &yellow
Sorry my suggestions are a bit all over the place but without knowing what the dealer "changed" or did its hard to eliminate anything at the moment!!!

Posted on Dec 08, 2009

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