Im really having major issues with this car it is a 1995 SL2 twin cam at first it was running kind of rough and kept idling up and down on its own so i checked the spark plugs and found that three of the spark plug valleys were the wire boot goes in to the spark plug were full of oil so i replaced the valve cover gasket and still it was running rough so i checked the temp sensor and was cracked and full of green slime so i replaced it know the car wont start it has good spark and there is fuel goin in cause the plugs got fouled with fuel. know im really stumped,

i really dont know were to look also there is lots of carbon coming out tail pipe when car was running so i thought maybe egr valve so i took it out and cleaned it but still nothing could it be the cat is clogged i tried loosening the manifold bolts to the exhaust to see if it would start but nada i really would appreciate any help thank you much. FrankC