No injector pulse

Discuss topics related to the CA18DE and CA18DET series engines.
dstredi
Posts: 7
Joined: Tue Apr 21, 2009 4:27 pm
Car: 67 Datsun roadster

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I installed the Ca engine into a 69 Datsun roadster SPL311. I fired the engine and it seemed to run fine. I continued working on the installation thinking everything was fine. I cleaned up all my wiring and permently mounted all relays. Now car won't start. Thinking I crossed a wire some where, I took all the wires back apart an checked powers and grounds. Still no start. I have no injector pulse. This happened in August. I have studied wiring diagram and I do not see the problem. I have replaced the ECU thinking that I may have shorted something in it. I have replaced dropping resistor and I have replaced cam sensor. I have power to the injectors and I can ground a test lite and make each one fire. I am very stuck and could use some . Thanks, Dan


boost_boy
Posts: 7051
Joined: Thu Nov 14, 2002 7:28 am
Car: B12 sentra w/built CA18DET, B12 sentra w/fully-built CA18DET, S13 coupe w/ CA18DET, S13 hatch w/CA18DET, 2002 maxima SE
Location: Miami, FL.
Contact:

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Because you said you cleaned-up your wiring and permanently wired relays, my advice is for you to go through your wiring again. If you changed ecus and injector resistors and what have you, then your problem is within your clean-up work and only you know how your car is wired.

Dee

dstredi
Posts: 7
Joined: Tue Apr 21, 2009 4:27 pm
Car: 67 Datsun roadster

Post

I have belived all along that the problem is in the wiring, however I have been through it at least twenty times. Out of all the wires coming from ECU there are only a few controling injectors. I believe that pulse starts at cam sensor goes to Ecu then to injectors. Is this the correct path? Thanks, Dan


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