Question about 2005 Gilera Runner VX 125

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Repair CDI box Gilera Arizona 125/200, KK, KZ, RV....

Hy, I have no spark on my bike and I was found the CDI box is out of function... is it possible to fix it? replace some transistor? thank you Alen :)

on Select Motorcycle is no options for model RX/KK/KZ/RV... so I choose the Runner VX125...

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I got m

my cdi unit not working how can i repair it pls tel me.

Posted on Feb 12, 2012

  • amarasinghe fonseka
    amarasinghe fonseka Aug 03, 2014

    Yes ,if you know electronics.carefully cut open the box ,without damaging components. clean up the PCB and check components with a will be able to identify the defective part....


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Hi i got a gilera runner sp 125cc just got a new battery 2 day 4 it put on i can only 1 side of my head light 2 work it should bothe side come on wen i put full bem on

Posted on Apr 21, 2011

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Hi rod! i have a problem with 89 honda elite lx scooter will not stay krunk . I can apray starter fluid in breather element and crank until the fluid gone. I took to shop and ripped off i believe. the guy replaced the cdi box and it not the right one bike ran for one day went back to same problem. bike sat a while i cleaned lines carb.suggestions- hint tips

Posted on Aug 10, 2009

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No it has to be replaced it is sealed very well

Posted on Dec 28, 2008

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Check your CDI box, could possibly be faulty, or if it is a newer bike the pick up could be faulty.

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Hello Pam, the controllers on the Kawasaki, KLT 250 Prairie, 1983-1985 are suppose to be the same...i have never swapped a CDI controller on the older KZ 250's, so i can not advise if another unit would work. I did however locate a new replacement for your bike. Here is the link.
I hope this helps & good luck with your bike.

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2008 gilera vx 125, changed the spark plug and

first thing to check is all the wiring for any damage or incase something has just come unplugged before getting the cdi unit checked and is the ignition switch in good condition??

Dec 12, 2009 | 2005 Gilera Runner VX 125

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Gilera runner stolen, changed barrel/immobiliser, no spark

You definitely need to change all with a kit of : ECU, engine main switch, seat lock and you will get in the kit 3 new keys, 2 black and 1 red.The black ones need to be programmed from the red one at a dealer's workshop.Then store the red some place safe.

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No spark

Hi and welcome to FixYa,

To my understanding, the problem is 'no spark' yet the engine cranks. Generally, to consider are:
  • pulser coil (least likely);
  • ignition coil (likely);
  • interlocks (likely);
  • CDI (most likely).

Offhand, the CDI would be the main suspect. Since the CDI is sealed, it is not possible to do component level checks. The only way to check if the CDI is good is to check the external connections; if they are good and yet no spark, then the CDI is bad.

How to check the above:
  • to check the pulser coil, measure the low voltage coming from it using an analog/needle type AC voltmeter. While cranking, it should show a flickering low voltage;
  • to check the ignition coil, use a continuity tester. Primary should measure 3 ~ 5 ohms while primary to the high voltage end would measure 15 ~ 18 kilo ohms;
  • the ignition coil has 1 terminal connected to the IGN +12 while the other terminal is connected to the CDI. This should have a pulsating voltage when cranking.
  • all the interlocks could be checked with a continuity tester. Please note that most interlocks has a diode connected in series with their wires.
The interlocks include:
  • clutch switch;
  • side stand switch;
  • neutral light switch.

Good luck and thank you for using FixYa.

Apr 21, 2009 | 1997 kawasaki ZX-6R Ninja

3 Answers

Gilera runner stolen, changed barrel/immobiliser, no spark

There's a procedure to recode new keys, so the immobilizer let's you use the new key, if (and only if) you have the master key (red). Look at this PDF:

Look for "Setting the Circuit" in the PDF.
Good luck!

Mar 12, 2009 | 2005 Gilera Nexus 500

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