try spraying some gas or starter fluid in the carb to see if it will fire off... If it does you know it is fuel related.
If not you know you have another issue

 

Wanted to get out to work on it tonight and try a few different things but havn't felt good all day, maybe tomarrow.

 

Kelly: Have you checked to see if your timing has slipped? If you have compression, spark and are getting gas, she should fire unless your timing is way off.

 

I don't believe there is anything to set for timing on this mod? 1998 Polaris Xpress 300, 2 stroke.
Except for lining up the stator correctly.

 

OK..................
I finally stopped buy the garage tnight to check out the atv. I sat up all night thinking about possibilities.

- 1st thing I did was recheck the top end compression ( my 1st assumption). It was low- deffinately the problem.

* I really think either I am putting the rings in wrong or a bore and honing problem.

CAN ANYONE HELP ME OUT WITH THE RINGS???
I thought I had each one set right before sliding the piston into the cylinder. As well as which one on top and which one on bottom as well as having the lettering facing up.

Much appreciated!
Kelly

 

Any comments would be great- has anyone else experienced not seating the rings right?

 

If using Wiseco both rings are the same with "R" marks up. What clearance did you have after having bored and honed or did they tell you? Was cylinder and piston and rings oiled up good when installing. Did you premix the fuel along with bleeding the oil pump for air? STUPID question BUT I have to ask: Is piston installed correctly with ring ends locked securely on groove stops and facing intake side?? Have had some people install piston backwards over the years! OPT

 

Used a Namura .020 Piston Kit. I took the piston and rings to a guy who does good work. So he had the piston and rings when boring and honing the cylinder. Right off hand I can't remember the exact clearance. I think the papers are out in my car. I oiled everything up good when installed. Yes- premixed fuel. Didn't bleed oil pump????

 

Doesnt matter on brand of piston but marks on rings always go up.

 

Marks on rings were deffinately up then.
Yes- premixed fuel. Didn't bleed oil pump????