[adam411]

-last year we purchased a 1993 arctic cat mountain cat 700 with 4000 miles, for $300 and some label material.
-going down the lake the belt blew and took out the coolant line over heating the motor, and seizing it
-during summer we fogged it, and worked on it, until it would turn over again
-weve checked the wiring and all that, now it will start but will only run for like 30 sec before stoping. its new gas,oil,coolent

any ideas why it wont stay running would be great

thanks

 

[saberstang]

Sounds to me like you need to take the hard way out and rebuild, checking bottom end seals, CR bearing lash, rings and piston tops. Hard to swallow. Sorry no other ideas here!

 

[Blackcat]

Your probably going to end up rebuilding it. When a motor heats up to the point of siezing, that means your piston has expanded so far that it is rubbing against the cylinder wall to the point of no movement. So your cylinder walls are probably shot as are your pistons.

You may be able to get away with new pistons, rings, and honing the cylinders...but you will have to take it apart to see.

I say probably, because maybe it's a fuel issue. Clean the carbs out really really good and try it again. If it does the same thing, then you have to decide if you want to rebuild it or find something else (whether it be a different motor or a different sled).