Question about 2003 Yamaha DT 125 R
Hi, Markhowarth8 and the usual suspects are:
1. Fouled spark plugs.
2. Discharged battery, 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.
3. Loose connection at ignition coil or plug between ignition sensor and module.
4. Spark plug cables in bad condition, shorting / leaking, spark plug cable connections loose.
5. Faulty ignition coil or ignition / electronic module
6. Failed CKP, CMP, or BAS sensor.
7. Faulty ignition switch.
8. Security alarm failing to disarm needs reset
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Yamaha DT 125 2000
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Posted on Mar 12, 2016
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Posted on Jan 02, 2017
It sounds as if you have dirt in your fuel line or some bad gas.
I would recommend draining your tank and cleaning it, then replace your fuel filter.
Posted on Dec 03, 2008
Check the kill switches including the side stand switch, with an Ohmmeter. Good battery? Good fuses" All wires clean and with a solid connection? Check the loom. 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? Get new stock spark plugs.
If still no spark, get CDI system and coils checked at the dealers shop.
Please rate this solution. Thanks burbee904!
Posted on Apr 05, 2009
SOURCE: yamaha fazer is miss firing
I have had the same problem. It is not the spark plugs - although it is always a ggod idea to change them to eliminater them as a potential issue.
The Spark plug holder can be a problem - in my case the wires leading from the ignition lead into the holder - had started to work loose- a common problem apparently. Solved by changing the holders.
Posted on Apr 19, 2009
check all your male and female connections on your wires for corrosion and also make sure they are matching with the right colour coated wire
Posted on Apr 25, 2009
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