2004 300 EC. Stator, coil and CDI measurements

[Hgoody77]

That's going to be the hard part. Maybe ship this one to a member to test. I dunno. Sure wish there was a value for the coil.

[noobi]

Originally Posted by Hgoody77

That's going to be the hard part. Maybe ship this one to a member to test. I dunno. Sure wish there was a value for the coil.

KTM use the same/similar electric system, so you can try a ktm cdi. Probably easier to find than a gasser one.

[motopsycho87]

My 06 cdi failed. Managed to get one to fit from a rm125. Did mean rewiring though only cost a tenner.

Try taking all coils off, place them in the oven about 50 centigrade and measure again, this may still not be definite but has found a dead coil for me before. If a coil wasn't lacquered properly it may be arcing between coils only when a high voltage is going through, replace in order.

spark plug
ht coil, ht lead and cap
stator coil
cdi

of course only after ensuring all connectors are clean and wires in good condition

[gregorythomas]

I have the same weak spark problem on my 2001 EC250. Unscrewed the plug, grounded it to head and kicked it, can not see the spark jumping the gap in the plug. But I can feel the spark on my hand, not a sharp zap but a mild one. I was thinking ignition coil, so I borrowed the one off my EXC200 and connected it up to the EC250, kicked it and can clearly see a blue/white spark jumping the plug gap. Used the same plug both ways.

From this I am thinking my stator is OK but my coil is bad. I measured it out as follows: Primary coil resistance 0.5 ohms, secondary coil 13,000 ohms. I don't hav the specs to compare this to. Can anyone advise?

I see from the parts finder on Gofasters, the coil changed part numbers in 2004, from ME25634006 to ME250434006. Anyone know what is different?

On ebay there is a 2005 coil but I am worried it will not fit.
Thanks
Greg