Hey, just put a new engine in my 87 GN and im having lotsa troubles ... when i put it in, it would start, and then the o2 sensor went all funny and then the crank sensor, replaced both, now im gettin spark and gettin feul, but still at a loss, when i set the cam sensor, the voltage is only reading 5.14 volts before i turn it ... whats wrong with this picture???