Motor 86 305 TPI, car wont start this is a new installation so please bare with me. Motor cranks fine, will fire for one second when cold start injector is hooked up. If I unhook the cold start injector the motor just cranks and cranks. I ran a noid test. On the injectors the light is very dim but pulses. On the cold start injector the light is very bright compared to the other injectors. Is this correct or do i have a bad ground or something. I have fuel pressure 47 lbs. It does drop rather quicly once pump stops working. I am witts end. Please help. I started with the basics EST disconected, piston one at TDC, rotor pointing to #1. All new sensors except for MAF. Adjusted TPS sensor, new knock sensor, new o2 sensor, new coil and cap, tested spark its ok at the plugs.

 

so .... after you crank the motor .... the pressure builds up ...........



then drops quickly after you stop cranking ??? fuel regulator ?


just a thought

 

I would verify that all grounds are in excellent condition(do a voltage drop test on them not just a resistance check) and also verify the power wire for the injectors for having a good connection.