I just finished putting my motor together, installed new crank and bearings, timing chain set, crank sensor and cam sensor, and now the car will not run, it just cranks hard and backfires through the exhaust, i'm not sure what i did wrong? I checked the cam sensor and it appears to be correct, Used caspers tool for setting. Is it poss. I put the timing chain on incorrectly? I thought it was dot to dot? I am somewhat new to these cars so any help would be great. 
