Ok I asked and explained my problem before I bought a 98 contour sport it was a mechanic special but it started and ran to get home but was rough from take off but smoothed out till just about home then it began really running rough and back firing now won't start its getting spark because well starter fluid caught fire but engine didn't start plus used screw driver to metal and saw spark been told seals and fuel pump and something about a crank sensor also my oil smells of gas and the coolant tank does too any help is appreciated