have you checked all of your earths?
what mods have you done to the bike? _________________ MC21SP - Roth-tax
CBR400 - track
MC21R - sold
MC21SP - sold
Have you checked all the connectors are firmly pushed together, and that there is no corrosion on the pins?
Have you replaced the spark plugs?
Have you access to another NSR so you can swap out the PGM to check it is working?
Are you sure there is no spark and it's not something else causing the problem?
Have you checked the KILL switch is set to RUN?
Let us know more and we'll try to help. _________________ MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball
i checked cables from computer to spark plug coil(colour: Bu/Gr, Bk/Bu, Bk/Y) which is no any damage...
and i changed 2 new plugs (NGK B8ES)
KILL switch is already set to RUN....
one day i was driving, suddenly the engine stop.....
then i can'r start the engine any more..
finality, i discove that the plugs are no spark
Right, but have you checked for voltage at the coils? This will tell us if the coils or the PGM is likely to be faulty. _________________ MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball
Do you have a voltmeter? _________________ MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball
I had a similar problem a few years back with my nsr 250 mc21.
One day I was riding my bike and the next nothing. I replaced the pgm box and I was back running again. Then a month later it happened again. To cut a long story short there was a crack in the coil that was hidden underneath the rubber strap that supports the coil. My guess was the coil was causing a short and feeding back to the PGM. I had a friend that is very clever with electronics, so we tool apart my broken pgm and discovered a burnt out component that help charges the coils. The bad news was that they fill the pgm circuits with this wax plastic stuff that is a nightmare to get out but we managed to replace the burnt out commpoents by soldering the new component to the legs of the faulty one. Plugged it backing and fantastic it worked.
Well its been along time since it happen but i'm sure it was the front side cylinder coil that was damage.. If you allready have your fairing off then pull the HT leed of the spark plug and follow the lead back to the coil. They are very short leeds normally, so it wont be that hard. Once you have found the coil, inspect under the ruber strap that supports the coil onto its frame bracket.
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