i would say gorbo

sorry gorbo didnt mean to laugh at your problem

doesnt sound good at all if it were mine i would do a compression check , it sounds like a bad valve ..

interference motors have no clearance between the valve and the top of the piston if the the valve timing is off the valve will hit the piston

I'd drain the oil.. and pull the pan.. i'm no motorcycle specialist but i'd check the rod bearings... see if you got any play.. bikes sitting around and you got the time why not check?!

hhmmm good compression check confuses me here , i would have bet it was a bad valve ..

i just had a thought you may just have a wire on the wrong plug , i have got my spark plug wires mixed up on a car before and it would idle perfect but as soon as i started to rev it it would sound like some one hitting the top of the piston with a hammer because the piston was still coming up when the sparkplug fired

the good compression thing might not be all the way true, it did have good compression about a week ago,

when we bought the bike the motor was out of it, it was out because the guy was attempting to change second gear in it and gave up, so me and my bro put it together and redid second gear but we never could get it to start, (we never touched any of the top end because we didnt think that the head or even the valve cover had ever been off or tampered wit)
SO i took it to a legit bike mechanic that my buddy has used before to see what he thought. Well the motor didnt have the valve buckets or shims in it, so last week the mechainc put the buckets and shims back in it, and I got it back last saturday, and it would start but woudl do all this horseshit in the videos.

But I havent check the compression since I got it back saturday, so Im not sure if since the buckets and shims where put back if the compression is good, but hes got the bike again now and hopefully he can figure it out. whhhewwww sorry about the novel......


and to what u said about the spark plug wires being mixed up, would that be like the two wires going to each of the two coil packs on a carburated bike??? I know that those two wires we never could get the a real clear example of the order theey attached to the coil packs.....if that was it and just that was the problem and just those wires were mixed up i would literally shit my pants with joy........