Sometimes that's the way it happens. At 60 lbs it shouldn't have ran the last few times.
Time for a new piston/bore.

 

pulled the 90 apart ! not good!!needs piston,rings and a jug.

 

So is moped world the best place to get the parts i need for the 90?And on my 50 i was told buy a guy to move the needle on the slide up one notch to richen it up some.Going to try that it has spark fuel and compression and idles has to be a tuning issue.

 

Not sure about moped world. Might be fine.
to compare:: click on this::
http://www.ebay.com/itm/2001-2003-POLARIS-SCRAMBLER-90-90CC-CYLINDER-PISTON-KIT-GASKETS-PIN-CLIPS-/150922862764?pt=Motors_ATV_Parts_Accessories&hash=item2323b420ac&vxp=mtr

 

Starting to feel real dumb with all of this!!! but would that kit fit my 90 because i cant find any specfic parts for anything i have .

 

These are scooter based motors and 99% are all the same.
It's the 1% that makes you find out the specs.
I refered to that ebay item for cost a comparisson to mopedworld.
If mopedworld sells you the kit for your sundiro, it should be close to that price. If not, there are loads of places for these parts.

 

Called moped world today got a were closed message i emailed them sunday night nothing back yet!called another place today they basicly blew me off told me to check the website and order it on line.Guess i need to measure the piston see what size it is and go from there.I really hate that i can't look this stuff up with the motor number or vin number so i get what will fit !

 

Found what i needed on ebay stuff was cheap hope it works!! Talked to moped world very helpfull and seemed cool but the prices were way to high for me ! they wanted 275.00 for a top end kit!I got one for 75.00 shipped.

 

New cylinder, piston, rings, clips, pin, pin bearing, and gaskets for $75?

 

Yep 75.00 shipped
not sure of quality? We will see i guess.