92 Suzuki quadrunner lt160 wont start?

[Mike]

hey i have a 92 Suzuki quadrunner lt160 i got it 3 weeks ago put it together it would start up awsome run very good but 5 days ago now it started giving me trouble starting when cold 3 days ago i was riding on a trail for 2 hours then drove it in the back of my truck and shut it off (it was running great) then yesterday i take it out to ride it and it wont start at all (i even took the bat out of my truck to make it turn over faster) it has spark i tried priming it cleaning the plug i cranked it forever and it only poped occasionally i took the spark plug out and it didnt feel like it had much comp. (but that was just with my finger not a gauge) can some please healp me with this Thanks