i have a 1.3 in my sami that is giving me the hardest time in the world. cant seem to get my 1.3 to start. i have my cam mark up, crank set at 10 degrees, firing order 1-3-4-2. and it still wont start. im getting fuel and im getting spark, but still nothing. it just back fires. the other day i retard the timing by turning the cap back and it started barely, ran for a short bit and shut off. cant seem to figure it out. please help if you can.