i had no spark and changed the pickup coil and fixed that problem. but still wont start. so i have fuel and fire but just wont go. can anyone tell me what i should look at next

 

If you have fuel and spark and still no go it must be timing. You have to make sure that you are at TDC in your timing. If you have that and it still isn't right then you may not have enough compression. Run a compression check on it and see what you have.