Eletrical Problems on the ns125r

[Valentino Mossy]

Hi all.
As some of you might remember, I had an engine seize up on me back last month, And thanks to Ian ( ) I got his old parts for the bike.
Well for the last 3 weeks (While working ) I've rebuilt the engine, but been having problems with the electric's.
For some reason I've been getting no spark at all.
Batterys okay as the lights,horn etc.. all work ( charged the battery just incase).
I thought i buggered up the ht lead and the coil, so i got a second hand one from a honda scrappys and that has'nt done the trick.
Any way I got myself a muliti meter and narrowed the problem to the CDI and the regulater/rectifer unit as they are not given any readings.
One point on the regulater plug looks like its burnt
Has this buggered up the CDI or the other way round ?

Most importantly " Why has this blown just by changing the cyclinder head etc... ?"

Any ideas whats happened ?

Ian more parts please !

Thanks guy's and gals !
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[ilovens125f's]

I've got an ns125f same bike but with no fairing,Any way i got a mulit meter on mine and i had no readings but i have a very very weak spark. I narrowed this down to a capcitor in between the coil and the h.t lead that i had put on to join a new h.t lead with i took it out and cut the head off a screw and put that it and wot do u know it started!!!!


Hope this helps
Kev
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Kev the Ns125F lover!!
!!!Dont ignore me!!!

[Ian (GPX)]

Richard,

Regulator is in the post free from charge in the morning.

You should get it in the next few days.

Yours,

Ian.

PS. If this does not work, then you have a connection problem some place !

[Kickstart]

Hi

Personally I would say to check all the wiring connecting the engine to the wiring loom. Check the connections are clean. Check the engine is earthed, and also check for any missing earth that you disconnected when you rebuilt the engine.

The regulator / rectifier unit just controls the charging of the battery. On its own with the battery charged it should have no effect on the running of the engine.

All the best

Keith
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[Valentino Mossy]

[Valentino Mossy]

[ilovens125f's]

CDI stands for Capictor Discharge Ignition system

Its basicly Capictors discharging creating a spark

It is triggered by a magnetic pick up on the alterantor


Hope this helps

Kev
____________________
Kev the Ns125F lover!!
!!!Dont ignore me!!!

[Ian (GPX)]

Richard,

I've also got the main wiring harness and spare coil, but you have tried that option (coil).

I think myself that you have a bad earth connection some place for no spark on the plug, you can check this with a simple test or two.

1/ Take earth from battery to engine via a new lead (bit of wire).
Place spark plug on block and kick over engine to see if you get a spark.

If you don't get a spark, then you have a wiring problem that is some other place.

Check all wires that go to the coil and to the main junction box.

Check that the kill switch is not faulty and connected properly, cos this will also stop it sparking.

2/ Another simple test, take a wire from earth on batt and wrap it round spark plug, then kick her over to see if it sparks, if it does spark and not when resting on the engine / frame work, then you have a bad earth going the the engine / frame.

If you still get no place, the only option is to take wiring harness off bike and check every wire for a break with a multi-meter.

If you want the Regulator, just say and I'll send it to you for nowt.

Yours,

Ian.

[Kickstart]

[Valentino Mossy]