suzuki _not sparking????

[grez]

can any body please help,i have had an ongoing problem with my rg 125 f.i have now had 2 brand new and 1 second hand battery as i thought that was the problem.
on all batterys,when taken from the charger,and left to cool for half an hour,then fitted to the bike,starter motor will turn,bike will fire,and c.d.i unit will open power vaves at 8,000 rpm and bike will run like a dream and reach top speed,for however long bike is running for.then when taken home and cut out for any ammount of time,the starter motor will turn,but will not spark and start bike,also the revs limit at 7,000 when moving.this is the same with all 3 batterys,all checked on a meter,all ok.i have had this bike for a while now and this is a new problem to add to the many many problems ive had.please,please help if you own a 125 f or know anything at all that might help

thanks

[ZRX61]

Sounds like the spark reserve is low, Halfords will sell you a bag of bright shiny new ones....

[ZaphodBeeble]

Alternator or regulator/rectifier. Get a multimeter and test the alternator output for AC voltage. Should be about 45V ish. Also test the Reg/Rec output for 14V DC. Both tests are with engine running.
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Current bike: VTR1000F Firestorm. Previous: Firestorm (written off) - XJ600 Divvy - NSR125 - DT125 and a load of offroaders.

[grez]

alternator is fine,as is rectifier,STUMPED???????????????

[Cigaro]

Maybe a bad connection between reg/rec to battery? what state are the wires in?

[grez]

i have two reg/recs,both are good when tested with multi meter,wires look to be fine,
it will still only spark when running,and will only rev to 6.000 wen moving,and 9.000 when in neutral.before this problem bike was fine?????????????????????????????????????????/////