[motodad623]

my problem is as follows if i take the right plug out and disconnect the spark plug wire it cranks and runs if i put the spark plug in while it is running it will quit.
now here is what happened rode it for approx an hour around the house no problems left the yard went approxx two miles and is shut off like i turned it off wouldnt start had to drag it home
Changed the following
cdi \ coil/plugs= the above problem someone please help me i have never in my life seen this:dunno:

 

[f7hustler]

whats your compression like?? i've never heard of that before but maybe theres a problem with the stator and when you put the plug back in it creates a ground causing it not to run!

 

[motodad623]

ex570

i forgot to mention the plug wire for that cylinder not connected to the plug when it is put in while running it will stall out. i will do a compression check
tonight and post results:dunno:

 

[motodad623]

compression 120