My 1995 Subaru Legacy L Wagon (EJ22) was having overheating problems, caused by a headgasket leak (I assumed), so i purchased the gasket kit and my brother and I set to work replacing everything. After everything was back together though, the car would not start. At first we did not even have spark, but then my brother realised he had the cam pulleys on the wrong sides. After fixing that and checking the timing marks on each, the car had spark but still would not start. It would turn over, quickly, but would not so much as cough for us. We double checked everythnig we could think of and thought maybe it flooded. So we let it sit for 2 hours, but when we went to try again, it still would not start, but this time we had what sounded like a small backfire through the intake, enough to make the air filter case bounce and could see a small amount of blue smoke coming from somewhere, could not tell exactly where. Any ideas what we are missing?