Hello,

My LT230 started misfiring recently while accellerating.  I also have a problem with the lights being very dim all of the time.

Could this be a bad coil? or a bad Rectifier?  

yea it could be. But I would check simple things first like spark plugs.

man it has been years since I once owned a couple LT 230's.  

Thanks.  I put a new plug and it did not help.  I also cleaned out the carb.  The dim lighting problem started a few seasons ago and I thought it was in need of a battery - I rode it for a few years and replaced the battery just recently and it did not fix the lighting issue.  Then the mis-firing started.  I am going to try a new coil, but was hoping someone has had this problem before and could push the "easy" button for me.  

I have an issue I am in the process of rebuilding my LT230 I am using a LT230 Quadrunner to rebuild a LT230S Quadsport. I shattered the piston due to I didn't replace the rings when I my father in law said it was smoking the last time he rode it. He took it out again and boom. Now I am rebuilding it. I have everything I need. I have one issue I don't know how to split the crankshaft. I know it is suppose to split. I just don't know how to do it. Anyone know???  

you'll have to take it to a professional. the lobes have to be pressed off and back to get to the rod bearings and the lobes have to be timed properly.  

Ok, Thanks for all the help here.  My LT 230 EH is running like a top now.  Although I cleaned the carb once, there was more debris in the line that plugged it right back up.  I cleaned it again and cleaned everything else too.  This fixed the mis-firing.  As far as the lights running dim, it turned out to be a bad starter solenoid.  Apparently the coil was shorting to ground draging the voltage down.