hi all i am struggling to get my 2014 ec300 to run its always run like a swiss watch in the 4 years i've had it, took it to a track the other week ran fine warming it up then died after half a lap like it ran out of fuel. got it back to the van checked it had fuel all good but had no spark stuck a new plug in and it fired straight up but started pouring fuel out of the overflow so turned it off to sort out the needle valve and its never fired up since. i've tried 4 new plugs, a new ignition coil, checked the stator, cleaned up all the earths and connectors, checked i've got all the feeds to the cdi. am i right in thinking that the cdi isn't fed ac voltage from the stator on e start bikes as it looks like it just uses the trigger on the wiring diagram which would then point to the cdi being dead.
2014 ec300 e start no spark
- Thread starter vwdom
- Start date
Gasser Nate
New member
It doesn?t say in that big chunk of text if you sorted out the flooding carby?
If I remember correctly the 2014 model was battery powered, so you need a good charge in the battery to have spark.
The crank case might be full of fuel too so it may help to drain it after the carby is sorted. (Not the gearbox but the Allen key under the crankshaft.)
If I remember correctly the 2014 model was battery powered, so you need a good charge in the battery to have spark.
The crank case might be full of fuel too so it may help to drain it after the carby is sorted. (Not the gearbox but the Allen key under the crankshaft.)
On keyless e start bikes ,they require a input from the stator to the cdi to excite /turn on cdi.This turns off everything when you turn bike off and it senses crankshaft not turning .This is to save battery etc.This is why your headlight remains on and turns off after a few seconds .
This input goes to pins 5 and 6 on cdi plug ,Red black, Blue wire sharing a 4 pin plug with wires from ignition pick up .
The CDI rarely fails but stator does .Not sure of voltage but there is a resistance measurement (I think about 12 ohms)
It would be like motor turning over with the ignition key off.
This is taken off wiring Diagram from my 2021 Reiju MR 300 which is the same as a 2019 e300 which is prob the same as yours
Good luck
This input goes to pins 5 and 6 on cdi plug ,Red black, Blue wire sharing a 4 pin plug with wires from ignition pick up .
The CDI rarely fails but stator does .Not sure of voltage but there is a resistance measurement (I think about 12 ohms)
It would be like motor turning over with the ignition key off.
This is taken off wiring Diagram from my 2021 Reiju MR 300 which is the same as a 2019 e300 which is prob the same as yours
Good luck
Yes I did sort the flooding. It has a litium battery on it that has been fully charged and tried it with a jump pack still no go. It certainly looks like the cdi is battery powered if the wiring diagram is correct.
I have a 2 pin plug coming out of the stator with blue and red wires that isn't used and looks like it's not used on the diagram, I just have the 2 wires going from the stator to the regulator and the 2 wires from the flywheel pickup to the cdi.
The 2014 owner's manual has a wiring diagram for non-estart and a wiring diagram for estart. The estart diagram clearly shows that the single winding on the stator is not used (red,blue). The non-estart diagram shows it connected to the CDI.
The estart diagram shows that "key on" powers the CDI with DC. The "key off" position grounds the ignition the same as the kill button. The flywheel pickup output is also grounded.
All the wires needed to be traced and checked. A bad kill button or key switch could keep the ignition grounded. A pinched wire would result in the same problem.
As a test you should be able to connect to any of the wires shown as 48, 49, 56, and 57/62 and see continuity to ground when you press the kill button or turn off the key switch. Have the CDI unplugged so any internal circuitry does not create odd results.
I have seen a bad key switch on a 2012 model.
The estart diagram shows that "key on" powers the CDI with DC. The "key off" position grounds the ignition the same as the kill button. The flywheel pickup output is also grounded.
All the wires needed to be traced and checked. A bad kill button or key switch could keep the ignition grounded. A pinched wire would result in the same problem.
As a test you should be able to connect to any of the wires shown as 48, 49, 56, and 57/62 and see continuity to ground when you press the kill button or turn off the key switch. Have the CDI unplugged so any internal circuitry does not create odd results.
I have seen a bad key switch on a 2012 model.
Your off road enduro bike has a key?
i've replaced the plug and terminals on the cdi and stator its still not got a spark so i am thinking it has to be the cdi gone down. where can i get a new one as it looks like the cdi for the 2014 e start bikes is different to other years and i can't find one anywhere, can i use one off of the later bikes or a different make?
Gasser Nate
New member
I agree
I have maybe seen 5 faulty Cdi?s in 20 years of being a mechanic. And thousands of stators. People are always quick to blame the black box because it is hard to test. Get yourself a peak voltage meter and check the output of the stator first.Have you checked all the earths etc?
I agree
Have you checked all the earths etc?
the stator has nothing to do with the spark on the 2014 e start bikes according to the wiring diagram it just goes to the regulator and the trigger goes to the cdi the second winding goes nowhere just an empty plug. the earths and basics was the first thing i checked also being a 20+ year mechanic.
Gasser Nate
New member
Still has a pick up coil.
Gasser Nate
New member
For what it is worth if the cdi is actually dead you should be able to purchase a stator powered one and wire that up instead.
Is there any voltage going to the coil? I assume you have measured the voltage coming out of the cdi?
Is there any voltage going to the coil? I assume you have measured the voltage coming out of the cdi?
I am only getting 3 volts max out of cdi to the coil, I've just had an email from my dealer to say the 2014 cdi isn't available anymore but they can get a 2015 one but have no idea if it'll work.
Do I just need the stator and cdi off of any of the earlier ec300's?
Gasser Nate
New member
I am pretty sure the stators are identical, like you said the source coil is not used and they are battery powered instead. You can check that easily with a peak volt meter. The pick up/crank sensor should be around 5vac and the source/exciter coil should be at least 100 vac.
I am pretty sure the plugs for the cdis are the same so with a little rewiring you should be sweet. Check the pin outs on the diagrams to confirm connections.
It is a massive pity those diagrams that were in the Gasgas technical information website were deleted by the overlords at Ktm.
You may even be able to source an aftermarket cdi.
I am pretty sure the plugs for the cdis are the same so with a little rewiring you should be sweet. Check the pin outs on the diagrams to confirm connections.
It is a massive pity those diagrams that were in the Gasgas technical information website were deleted by the overlords at Ktm.
You may even be able to source an aftermarket cdi.
The toggle (in place of the key) would just supply a 12v input from the battery to the CDI to "awaken" the CDI.It does sound a bit obvious but is there 12v (battery voltage ) on the toggle sw and does it get to the CDI .You will have to look at wiring diagram to check which pin it is .Easy to check with meter
i have 12v from the switch i think i've checked every wire about 1000 times
and i've removed the switch completely and made a bypass plug to rule that out.the wiring diagram shows on the cdi plug inputs from the pickup coil as wire 55 pickup- and 56 pickup/stop, i have 111ohms with the ignition on nothing with the ignition off on 55 and continuity to earth at 56 with igntion on and no continuity with the ignition off which i am assuming is correct.
i am still thinking its the cdi if thats correct.
this bike is very close to getting a can of petrol and a match.
