CDI unit playing up?

[stevew]

Working on a friends Hyosung aquilla 125 (GV) that the CDI seems to have gone "tits up" symptoms are:-
Engine Ran ok but the rev counter was erratic jumping around and often reading twice the revs.
Next start up all was well and the engine ran fine............then it cut and would only run on the rear cylinder.
So plugs out and check spark....only the rear cylinder sparking
Swap coils but still the same cylinder out so the coils are OK.
Looks like the CDI unit so, simple, just get a replacement.
Not so simple 'cos there doesn't seem to be that many in the UK and what there are here are close to £200, bloody hell, that's a lot on money!
The defunct CDI is as follows;-
Hyosung CDI unit 32900H (embossed into the plastic by the manufactures Edgetek Co)
GV-125 & G51 (in white paint stencil)
Anything else do the job? Preferably with the same connections.

SteveW
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Maxsym 400i 2013, Sterling 125 2017, Honda Wave110i 2014,
Orpington
The opposite of bravery is not cowardice, but conformity. Robert Anthony

[unitynotsocri...]

you could try using two cdi units designed for singles from pit bikes,
please find wiring suggestion and myfirst peice of erotic art,its called 'suprised nun in a barrel'.
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nearly a normal tax paying tosser.......with ferrileness suzi100,cg125,cb125scb100n,cb175,cd100,cj250t,kh250,c15,125 bantam,super 6,rickman gs750,xt500,250rs,dt175,lifan125,dolomite1850,metro,Morris220ld,morrisfg,leyland princess,range rover,corsa,vw camper .now struggling with legs. MORE ORDER = MORE CHAOS

[bikenut]

:karma: hi dude,

manual on this site is listed.........

have 250 manual at home and will check but does your bike have two seperate cdi units, like two independant ign systems??

if so can they be swapped like coils??

bad connections, fatiqued wires, make and break contact??

or kill swithc problem??

[unitynotsocri...]

looking at a gt wiring diagram it seems the Hysong uses a single trigger coil for both coils,and a single cdi unit for both coils. so it would be best to find a proper cdi and not bodge it.

you could recheck the wires to the affected coil and try a new plug although you seem to have already worked out its the cdi.
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nearly a normal tax paying tosser.......with ferrileness suzi100,cg125,cb125scb100n,cb175,cd100,cj250t,kh250,c15,125 bantam,super 6,rickman gs750,xt500,250rs,dt175,lifan125,dolomite1850,metro,Morris220ld,morrisfg,leyland princess,range rover,corsa,vw camper .now struggling with legs. MORE ORDER = MORE CHAOS

[stevew]

Yes it seems a rather unique CDI unit so i had to buy a new one at £130. Running great now.
But is there any way of getting a bit more performance out of this little V twin. The owner is a mature guy not a hooligan teenager!
Bike runs well and it's smooth but when we go out together , me on my VN1500 (1500cc) and him on the little Aquila (125cc) the performance difference is horrific! I know I should expect that but I was just wondering????
____________________
Maxsym 400i 2013, Sterling 125 2017, Honda Wave110i 2014,
Orpington
The opposite of bravery is not cowardice, but conformity. Robert Anthony

[bikenut]

you could always tow him..........thread on here somewhere about housung v twin 125 tuning.........how are they gettin on......

[stevew]