1972 1.7 not starting Options

[ctkellett]

I bought a stock running project car with a bad tail shift transmission. I pulled the motor and replaced the transmission with a freshly rebuilt side shift unit from 914 LTD.

After the reinstall I am not able to get the car running again.

Things that I have double checked

-Fuel Pump runs and primes when the ignition gets switched on at the key
-confirmed spark at the coil and at the plug with motor cranks
-can hear the injectors pump once while the fuel pump is priming and when you step on the gas pedal once.
-confirm that the timing is set correctly, that the points are gapped correctly.
- the car will run briefly on starter fluid.

Any thoughts? Maybe and ECU issue? Where do the injectors get the signal to fire?

Thanks!

[Dave_Darling]

I think you've found your problem. The Y should be in the return part of the circuit, not the suction side.

The lines should go:
- Fuel tank to larger center tunnel line
- Larger center tunnel line to fuel filter
- Fuel filter to 'S' port on fuel pump
- 'D' port on fuel pump to passenger's side fuel rail
- Passenger's side fuel rail to driver's side fuel rail
- Driver's side fuel rail to fuel pressure regulator
- Fuel pressure regulator to Y
- Y to 'R' port on fuel pump
- Y to smaller line through center tunnel
- Smaller line through tunnel to tank

It sounds like you have some hoses swapped.

--DD

[ctkellett]

I think you've found your problem. The Y should be in the return part of the circuit, not the suction side.

The lines should go:
- Fuel tank to larger center tunnel line
- Larger center tunnel line to fuel filter
- Fuel filter to 'S' port on fuel pump
- 'D' port on fuel pump to passenger's side fuel rail
- Passenger's side fuel rail to driver's side fuel rail
- Driver's side fuel rail to fuel pressure regulator
- Fuel pressure regulator to Y
- Y to 'R' port on fuel pump
- Y to smaller line through center tunnel
- Smaller line through tunnel to tank

It sounds like you have some hoses swapped.

--DD

Darn, turns out that they were correct and I made a mistake when I looked at pump photo instead of looking at my pump in the car. So, all the hoses were correct. I am still not seeing any pump pressure after the first burst after the key has been turned to the on position. Where does the pump receive the command to run from once the motor starts to crank?