08 gt650r stalling when riding
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My 08 carby gt650r has started always stalling after the bike gets warm when approaching a red light I’ve got to pull in the clutch and open the throttle otherwise bike doesn’t idle and stalls as well as the rear cylinder is having an electrical misfire regardless of changing the ignition packs as I have swapped them and it’s still the rear cylinder when running over 3k rpm
Anyone have any answers or solutions -
Hey, when you say changing the ignition packs you mean the spark plug caps as well as the spark plugs?
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Check engine compression at the rear ?
// Meditation doesn't mean you have to sit still....
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I’ve used a timing light to check the plug lead on each cylinder number 2 lights it erratically where as number 1 cylinder blinks the cylinder beautifully
I have yet to do a compression test as I don’t have a tester at hand but seeing how I still have erratic on number 2 I need to look into this more can someone tell me tell me where to start the test process from to decipher where this erratic spark is coming from will write compression values when I get the tester
Dry & wet test values -
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Swap the front and rear ignition packs (HT cap, coil) and use fresh CR8E plugs, tell us if the problem happens on the front and the rear engine sparks better ?
Then you know its the ignition packs
// Meditation doesn't mean you have to sit still....
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Do you have a picture of the CDI unit ? (some 650’s have 1 or 2 black boxes) (If it has 2 black boxes , one is for the general bike and the other one is more for ignition control)
Also, trace the wires from the rear coil => match their wire colours to the black box it ends up
Download the service manual (I uploaded many in this forum) so find one that matches your bike, and use a pocket meter to test the CDI unit
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Japan Unit = They rarely fail , so i would be surprised if it has failed. Have you checked eBay AU for a spare one that’s verified working?
Did you see any other black boxes ?
Remember what i said in the previous reply about checking rear coil wires leading up to the black box
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Just the one cdi I’ve ran the wires back they’re solid the bike has become immobilized from the issue intensifying as soon as it starts it misfires now same cylinder regardless of the ignition lead caps or plugs being changed ive replaced the regulator with a mosfet cbr600rr one as the oem cooked 2 batteries in a couple of weeks is there any other components in the ignition system then the cdi, battery and ignition packs/ leads?
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If the battery was cooked 2x , i would be concerned that it is positive for a voltage overspike in that past that has possibly affected the circuitry of the CDI unit. Meaning you may need another CDI in the worst case.
Stator = New one would be a good idea (the pulse sensor) is what tells the CDI what to do and what to spark, it may be reading OK when its off but may act haywire once it warms up , hence the haywire behavior in the cyclinders. The sparking system starts from that flywheel pulse sensor (which means the replacement of the whole stator unit as a last resort too)
Mosfet is a good reg, keep it there.
If there is no “igniter” box , that runs through the coil-pack wires , then your harness may be a simpler version as some 650 carbies do have an extra box (or mystery object along the frame) that helps with the coil-packs. If not, yours may be all directly controlled by the CDI unit itself (subject to the stator pulser being in order)
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