99' KX125 ""sneezing""/""Hic-up"" noise...

[zildjianxdrumme]

When i tried to get my 99 kx125 going the other day after i fouled a spark plug it wouldnt start... I called my friend over to see what was the matter with it. (hes good with 2-strokes and engine stuff)... he said i probably pushed it to hard and burned up my piston rings... i dont know though... but whenever i try and start it up: #1 it has no compression, (i can push the kick down with 1 finger); #2 after like 3 or 4 kicks with the choke on it hicups, or almost like a sneeze; and #3 it backfires....... I need someone to explain to me the backfiring and "sneezing" noise.. My dad and friends have tried to explain it to me but they all tell me different things... I just need a GOOD explination, and help with this...

[pintlermotocros]

Trust you father! It has never steared me in the wrong direction!

-Pintlar-

[quadfather03]

IF you have no compression id say you need a top end. As for the other noises you would be surprised at what could cause that but i think you will fix most of that by getting the top end fixed. I have found many reasons that a bike hicups or backfires you may have a problem with your timing or firing system since it fouled the spark plug and if the timing is off that will cause a backfire. You should probably check the piston first if it is that easy to turn over. Good luck

[SirFallsALot243]

Theres no way of knowing until you tear it down. Take it apart and check the damage.

[smartini]

My lil 80 expert did the same thing. I actually broke a boyseen dual stage reed. So i bought new ones and a new vertex ring and wala she fired up in one kick. Check your reeds.

[crdude]

my little yamaha currently dose they same thing, what im going to do is replace the rings and if that dosent help ill end up rebuilding the hole top end.

[Mr.Boof]

top end..