Question about 2000 Yamaha DT 125 R

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Yamaha125dtr got no spark on bike changed spark plug checked coil and fuses ok was sparking fine then stoped

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  • Anonymous Mar 14, 2009

    all this has been checked and bypassed but still no spark suspect stator or cdi any ways of testing these components

  • rrrttt Mar 22, 2009

    EXCUSE ME !

    I WOULD LIKE TO ASK ABOUT CDI.
    MY MOTORCYCLE (125 DT_ YAMAHA)'S CDI IS BURNED, SO I WANT TO BUY NEW CDI, HOW CAN I BUY IT? NOW I AM AT BANGKOK.

    AND PLEASE GIVE ME ADVISE WHAT I CHOOSE .

    WITH REGARDS

  • joe May 11, 2010

    engine kill switch is in the right position, right?

    bike is in neutral, not in gear, right?

    does this model have a kickstand safety switch? if it has one, is it still plugged in? tried to start it with the kickstand up?



    did it ever run? if it did, what was done to it before it got into this condition?





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  • 3,567 Answers

Get a BRAND NEW plug and recheck for spark. Be sure plug is grounded to engine. By the way, FTjoe (above) has some very good questions. The sator is not involved here. The dealer can check the CDI usually for free.

Posted on Mar 14, 2009

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1 Answer

Weak spark


If you have an ohm meter, check the resistance on coil 1 and 4 - across the positive and negative wires and compare that to the coil that feeds 2 and 3. If the resistance is higher on coil 1 and 4 that would cause a week spark and i would suggest changing it. If you don't have a meter, simply connect coil 2 and 3 to the wiring of coil 1 and 4 and turn the bike over and check the spark. if it is a stronger, then your 1 and 4 coil is the problem and will need replacing. Prior to checking all this, make sure that the earth contacts on your coil to bike frame are good and are clean and free of corrosion and the like. Hope this helps

Apr 14, 2014 | 2000 Yamaha YZF-R1

1 Answer

Zxr750l no spark at plugs but have power to coils. kill switch ok, coils ok. have checked side stand switch, fuses good. any help please.


You say you proved power to the coil but there is no spark at the end of the spark plug wire ... have you checked that spark plug wire? Could be very high resistance or open ...

Feb 24, 2013 | Motorcycles

1 Answer

No spark on my 2001 yamaha r1


Hi, Anonymous and the usual suspects are:
1. Fouled spark plugs.
2. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a load test if necessary.
3. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
4. Loose connection at ignition coil or plug between ignition sensor and CDI box.
5. Spark plug cables in bad condition, shorting / leaking, spark plug cable connections loose, check for spark leakage in the dark.
6. Faulty ignition coil, pick up coil, trigger coil or CDI box testing needs to be checked with an ohmmeter at 70 degrees Fahrenheit
7. Faulty safety switches clutch, kickstand, neutral, off/on etc.
8. Faulty ignition switch.
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.
http://www.r1-forum.com/forums/102-00-01-r1-mechanical-help/254361-2001-r1-no-spark.html
How to diagnose no spark situation on motorcycle
2000 2001 Yamaha YZF R1 Service Manual R1 Moto Data Project
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

May 06, 2012 | 2001 Yamaha YZF-R1

2 Answers

Hi i just got a 1988 gsx600f i put new plugs in it tuck it out for a ride and it was running good then i gave her a little gas to kinda see what it would do and it bogged so i idled it home and statred...


it seems odd that your coils would play up, usally the they just stop working. You talk of it bogging down? , i would suggest that to be a carby problem, especialy if the bike has sat around for a while. first try to just drain the carbys, as you can do this without removing them, should be a drain screw or plug on the bottom of the carby. Make sure your air filter is clean too!

May 27, 2010 | 1988 Suzuki GSX 600 F (Katana)

1 Answer

Ok, I put new gas in my bike, changed the oil, new battery, all new plugs,solenoid works, starter is fine,checked wiring to my starter that's fine, fuses are all fine what the heck else could this be? My...


If the bike has been sitting for awhile it may be clogged with old gas that evaporated an turned to varnish.

Check your choke cable and make sure it's properly adjusted.

You may have to clean the carbs. Or your coils are not sending spark to the plugs.

Apr 02, 2010 | 1981 Yamaha XJ 650

1 Answer

No spark at spark plugs so wont fire new battery all connections and grounds seem good was sitting for 3 months and ran at that time someone had turned on key and ran down the bat. so replaced but now have...


Check the coils first, leaving the key on may have burnt out part of your ignition system.
Easiest way to check coils is to pull one lead off, plug a spark plug into it. Run a hot wire from the positive side of the battery to the coil ( Do Not Plug it in!!) . If you flash the wire on and off the power side of the coil it should make a spark jump across the sparkplug ( don't forget to earth the base of the plug.)
If the coils are ok, see if you can borrow a CDI unit to try in your bike ( it is good to have mates with the same brand of bike )
Don't forget to check all fuses first and make sure the "Kill Switch" on the handlebars is on.
Happy fault finding.

Mar 29, 2010 | 1986 Yamaha FJ 1100

2 Answers

No spark at coil, no blown fuses, turns over fine ,but no start.


check module in distributor, check coil in top of cap also ,check the plugs to see if spark is there, if not coil is bad or module in distributor ,hope this helps thanks robert b.

Jul 05, 2009 | 2000 Chevrolet Astro

1 Answer

Galant Special Edition 1994 Motor does not start


this maybe caused by no fuel or faulty fuel pump, ignition coil, wire and plug crank position sensor. first check for spark by removing on spark plug wire and put a spark plug in the spark plug wire boot, donot touch the plug only the boot have someone crank the car over. if you see spark, that part of the ignition is good. if not, check the coil resistance if should 40 to 80 ohm with a volt meter pf not replace. if ok, but no spark check the igniton control madule make sure the coil and module are receiving current. if not check the fuse that feels them. if it is ok, check distributor cap and rotor. if rotor and cap are fine, check for fuel at either the fuel filter, the fuel return line or removing some spark plug and see if they are wet. if there is no fuel check the fuel pump and the fuse and relay that control the pump. if there is fuel with high pressure but there is no spark, check the crank sensor for signal with a volt meter while cranking the vehicle

Jan 02, 2009 | 1993 Mitsubishi Galant

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