ok ive already browsed a few threads and cant really find what i need. heres the prob. 93 dx d15b7.. cars getting fuel and spark. cranks fine but wont kick over. i can hear a kinda popping or rumble coming from the exhaust like it wants to but nothin. thinkin its off timing?? second question. the motor i bought doesnt have the plastic guards to match up the timing marks! how can i match the crank pulley mark up without it?