Hi, I am looking for advice on this ignition system.
The bike was running great and then died. I have good compression and air/fuel. I have no spark.
New spark plug.
Checked plug wire and boot - 5000 ohms - good.
Stator has 1 yellow wire coming from it. I get 10 volts AC from the stator when spinning engine with a drill.
The regulator/rectifier outputs 9 to 10 volts DC and the rad fan runs when I spin the engine with the drill.
No spark when I spin with the drill.
I am guessing the above suggests low voltage so maybe a bad stator - should I have 12 volts DC or maybe 14 or more like a car?. Note that there is no battery or charging system on this bike so I am not sure if it is supposed to run at 12 volts.
The yellow AC wire from the stator goes into a pin on the regulator. It does not jump straight to the CDI but instead comes out of the regulator on a neighboring pin to the CDI. The pin beside it has 1 ohm to another pin with the yellow wire to the CDI. That seems like a direct connection with the yellow AC passing through the regulator to the CDI. So I disconnect the stator from the rectifier and connect the yellow AC from the stator direct to the CDI I get spark - Yeah Happy. Seems like the rectifier is pulling the power too low to get spark so maybe a bad rectifier? I can run the drill all day long and get spark with the stator directly connected to the CDI.
With rectifier/regulator disconnected I can start the bike first or second kick. Unfortunately, when I rev it up it bogs down and chugs which seems like bad spark timing. Maybe no spark advance? Maybe a bad pickup?
The CDI has 4 wires - yellow AC, white and green from the pickup, black for the ground and red/white to the kill switch.
The pickup wires have 257 ohms and the white and green output 0.3 volts AC when I spin the engine with the drill.
Does anyone know this system well? Any ideas on what my problem is or what/how to check?
Thanks.
Kevin
The yellow wire powers the cooling fan and lights via the regular, if the stator has gone, the Ducati enigera can be picked up from racing planet cheaper than gas gas a lot cheaper.
Hi on my beta I lost the spark it turned out to be the wood ruff key no sheared but moved out of groove not much but enough to stop spark, Jhon lee sell stators for betas, could be a loose flywheel fingers crossed.
As said both great bikes the gas gas is a lot lighter in feel and physical weight but the Honda a great bike, owning a few gas gas bikes now KTM parts seem to be hard to come by anything older than 2015 I struggle. Monty’s parts seem to be easier to get hold of a good price.
Jhon lee has some nice bikes , mine all come from BVM but since ceasing trading a few year back , the new bvm has half the stock to the old place, the tmx is good, be careful on eBay the bikes may be stolen hard to check a trials bike unless road registered.
Hi just enquiring, there used to be a guy in Solihull West Midlands who supplied trials clothing from his garage and other trial stuff, does anybody know if still around and selling, many thanks?
2004 Gas Gas TXT PRO 300 Dicati Ignition
in Introduce Yourself
Posted
The yellow wire powers the cooling fan and lights via the regular, if the stator has gone, the Ducati enigera can be picked up from racing planet cheaper than gas gas a lot cheaper.