L-Jet Injectors Aren't Getting Ground, L-Jet Injectors Options

[nmkimosabe]

After a thorough investigation, it appears that the injectors are not getting ground to fire properly on my 1974 1.8L. Maybe it's an air flow sensor issue but not sure. All the other wiring seems to be okay. I would appreciate any thoughts from the knowledgeable folks on this forum. Thank you.

[JeffBowlsby]

Check the schematic for these circuits. LJet injectors do not ground directly, they go through the resistor pack (look for broken wires) and then to the double relay.

[nmkimosabe]

Check the schematic for these circuits. LJet injectors do not ground directly, they go through the resistor pack (look for broken wires) and then to the double relay.

@JeffBowlsby
Thanks Jeff for taking the time to send the schematic and your thoughts. I've read many of your articles since I bought this car last Spring. I will print this out and review with my mechanic on Monday and get back to you. We've checked all the wiring, AFM plug and flap, vacuum lines, dual relay, dwell, coil but can't seem to get the injectors to ground and per your article they don't. It has normal fuel pressure and will start briefly at times but won't continue running. I will order a new resistor pack as mine might be the problem. Thanks Jeff.

[nmkimosabe]

Check the schematic for these circuits. LJet injectors do not ground directly, they go through the resistor pack (look for broken wires) and then to the double relay.

@JeffBowlsby
Thanks Jeff for taking the time to send the schematic and your thoughts. I've read many of your articles since I bought this car last Spring. I will print this out and review with my mechanic on Monday and get back to you. We've checked all the wiring, AFM plug and flap, vacuum lines, dual relay, dwell, coil but can't seem to get the injectors to ground and per your article they don't. It has normal fuel pressure and will start briefly at times but won't continue running. I will order a new resistor pack as mine might be the problem. Thanks Jeff.

@JeffBowlsby
Jeff---in case you didn't see the earlier thread, the car ran fine and the next day it coughed and died. It will start a few seconds and then stop, Fuel pressure is okay, dwell is at 50 degrees, AFM appears okay but hard to know if the potentiometer is working correctly, negative coil wire is good, don't see any visible wire breaks in harness, dual relay appears fine but need to further test the resistor pack. So the mechanic's response was there is no ground at the injectors, so they are not activating.