...its possible to have a weak spark if the wiring is wrong, but than, which i have done, blew up my CDI...so check your wiring...to be safe only hook up the ebgine to the CDI wires...no white...blk to blk abd blue to blue...check your spark plug gap and if its foiled out replace it...sounds like your getting gas...so get on the wiring...leave the kill switch off for now...do you have a integrated kill switch...small soiderd wires in there can come loose...do that for now...process of illimination...you'll get it...than i'll tell you a few more things...just make sure all the bolts are snug...incase this takes off...ha...go getem...talk at you later...Dennis