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My gilera sc 125 just cut out .there is no spark. ive changed the coil . any ideas

Does this mean the cdi unit has hailed . ive checked all wiring and looks ok.

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 7 Answers

SOURCE: no spark

It sounds to me like the repair shop has connected the ignition wire ( the wire going to the + side of the coil ) to the wrong switch terminal. Take a volt ohm meter and connect the ground wire to the negitive ( - ) side of the battery and expose the ignition switch terminals. With the switch in the OFF position check for volatge on all the terminals. Make note of any terminals showing a 12 volt reading. That is probably the feed line from your battery. Turn the switch to the ON or RUN position and check for a terminal other than the one which gave you a reading before. note and mark this terminal. Locate the coil. There are 2 thin ( 18 guage ) wires attached to the coil. One goes to the distributer and the other goes to the ignition switch. Isolate that wire and reattach it to the connection on the ignition switch you marked earlier...
Good luck,
shag79

Posted on Nov 29, 2008

  • 3567 Answers

SOURCE: I have no spark 2000 KTM 125 sx

Before going to the CDI system go ahead and check the kill switches including the side stand switch, with an Ohmmeter. How good is the battery? Check the fuses. Check the wiring harness. Are all wires clean and with a solid connection? Any abraded wires? Check the operation of the ignition switch with a volt ohmmeter. Is the bike in neutral and the neutral light is lit up?

You can download a free PDF factory service manual by going to the website below >
http://www.carlsalter.com/motorcycle-manuals.asp
The manual should tell you in detail how to test the CDI and other electrics.

Please rate this solution. Thanks. > 4 diamonds would be nice!

Posted on Apr 08, 2009

  • 3567 Answers

SOURCE: No spark

Check the side stand kill switch if your bike has one. It kills the engine so that you don’t start out with the side stand down. If broken or out of adjustment, it would kill the spark. Check for a broken wire at the side stand switch and coupler. Try moving the kill switch by hand. If that doesn’t work then wire a jumper around the switch to bypass it. Check the fuses. How good is the battery? Try a jump start from your car battery. Is the handlebar kill switch on? Check the operation of the ignition switch and all kill switches with a volt ohmmeter. Install new spark plug.

If that doesn't do it, check the wiring harness. Did a wire come unplugged? Are all wires clean and with solid connections? Any abraded or pinched wires? Is the bike in neutral and the neutral light is lit up? If no neutral light, check the neutral switch and neutral switch wire on center casing. If still no spark, get CDI system and coils checked at the dealers shop. You can screw up a CDI unit checking it yourself.

Posted on Jun 18, 2009

  • 186 Answers

SOURCE: honda crf450 no spark atall plenty of power out of

maybe get a new spark plug.make sure your grounded(earthed). did you take the plug out and check for spark against the motor while you cranked the bike over?

Posted on Oct 17, 2010

  • 1 Answer

SOURCE: Gilera runner sp50 - engine turns over but does not start

i have a gilera dna 50 it was working perfect yesterday and all of a sudden its turning over it wants to start but wont ?

Posted on Mar 12, 2011

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My Gilera SC 125 seems to be getting too much oil in the gas. Sometimes it's hard to start and we need to change the spark plug? Any idea? Regards Svein


Hi, Svein and the usual suspects are:
1. Fuel mixture too rich or enrichner left out too long.
2. Incorrect spark plugs for your kind of service.
3. Piston rings badly worn or broken.
4. Valve guides are badly worn and/or seals worn, crushed or have come off valve guide and pump oil through it.
5. Spark plug cable weak or ignition coil faulty.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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http://www.apriliaforum.com/forums/showthread.php?226487-The-460cc-Master-engine-oil-fuel-issue
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http://www.carlsalter.com/download.asp?p=1069

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put a new plug in it 1st...see if thats helps....if not check wiring to coil ..it maybe coil or cdi box that as gone..just have to work threw it....but start with new plug 1st

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My Gilera Runner (moped) is losing power and can not get faster than 20 mph


helo,
the first thing you are going to do is clean the spark plug,or its better if you try to replaceit.,of you do that but still the problem is the same,then check and set the "timing" if yourt motorcycle is contact point operated,.
But if it is CDI operated,then you have to replace the said CDI.
If you have done all these things but it is still doesnt work good,try to check your ignition coil if it has loosen contacts or it is already defective.
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Look for "Setting the Circuit" in the PDF.
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One other item of importance is that the bike you are in question about does not emit a bright spark when you are checking for fire. Make sure you are using a brand new plug and ground it on the head. Try to make sure you are in a dark environment when you check the spark.

Dec 13, 2008 | kawasaki KLX 300 Motorcycles

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