Has this happened to you?

[axellmusic19]

So I just got done ripping around the Soo Pits in northern MN and then headed down the trail. I slowed down to a stop and shut it off for 10 or so minutes. I tried to start it again but the kicker seemed much too easy and i could push it with my hand. I thought the engine had lost compression cause I could still hear the cylinder "pop" when i turned the kicker. I tried bump starting it and it sputtered then died but this time it froze! The kicker is now stuck up as well. I knew i hadn't dropped a valve cause its a 2 stroke and now I have 2 ideas on what the problem could be. I first thought that the connecting rod let go or a wrist pin; therefor not making the cylinder participate at any rpm faster than 1. Also if that is the problem it could explain the jamming when bump starting. I tried bumping it backwards to try and see if my idea was correct but instead it remains jammed :confused: My most recent idea is that a gear in the kicker chipped or broke which didn't allow it to completely start the atv and when bump starting it jammed the teeth in the starting gears? Thus not allowing the cylinder to cycle as the kick start is jammed? Please help! I will be taking it apart soon but i dont want to go to far to realize its somthing as simple as vaporlock. (which it isn't) also the temp was just right. not too hot or cold. :eek:

[storms400ex]

put a wrench on the flywheel bolt and see if you can break it lose going backwards, might have broke the skirt of the piston off and thats making it seize

[tommygunnz]

I bet something happend to ur piston I would pull the intake and head off to take a look if it looks good maybe a little oil in there to help unbind it but if its only a kicker gear u could pop start it still unless the gear really broke and bound something else up doubt it though

[axellmusic19]

Well I thought I would follow up with a shocking finding of what actually happened. You may be glad to know yaul were correct that it was partially the rings falling apart and mostly that metal debris got in the intake after the previous owner rebuilt it. Therefor, after taking for a long ride it finally got baked on the cylinder which then tore up the sleeve and cooling head. OUCH. Oh well, more excuses to get a LA Sleeve, a Wiseco piston and a new high comp. dome :ermm:

[tommygunnz]

if shes not ported yet its a good time to do it too:D

[axellmusic19]

Originally posted by tommygunnz
if shes not ported yet its a good time to do it too:D

Well, is was already ported and so hopefully there is enough sleeve left to bore out the damage and keep the porting and just get a bigger piston but I doubt that I will be lucky enough for that.

[tommygunnz]

well good luck bro if its not done look at head work too

[axellmusic19]

Sorry I misunderstood, there is plenty of head work done to it as well :)