New member Silvia will not start

General discussion forum about the 240sx, and a great place to introduce yourself to the board!
kel eg
Posts: 2
Joined: Sun Mar 27, 2016 8:38 am
Car: Silvia PS13

Post

Hi guys im new here. I own a sr20de PS13.

Im currently doing a sr20de+t conversion using the original engine. The problem is now it will not start.

The distributor was out a tooth so i corrected it and the car started two days later the car will not start again.

I am getting a good spark but no fuel.

The fuel pump is working as you can hear it prime and if you remove the fuel pipe, plenty of fuel is pumping out.

Trouble is the injectors wont pulse. I have done a noid light test which resulted in the noid light not lighting up which i believes says the injectors are not getting the signal.

I have also done a continuity test from the ecu injector pins to the injectors which seem fine.

Any help appreciated guys.


kel eg
Posts: 2
Joined: Sun Mar 27, 2016 8:38 am
Car: Silvia PS13

Post

The injectors are 440cc nissan jecs

User avatar
Hijacker
Posts: 14373
Joined: Wed Aug 13, 2003 4:57 am
Car: '92 240sx Convertible
'94 F-150
Location: Fredericksburg, VA

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Sounds like you got off to the right start IDing the root cause. I'll help get you a bit further along.

With the ignition off, check to see if you get battery voltage to one of the pins of your injector (should be the right hand pin IIRC). The injectors all share a common power wire. Also, check pin 109 at the ECU (bottom left pin if you're looking into the ECU plug) All of these wires should be solid red.

If you're not getting battery voltage, make sure the 25A fuse labeled Engine Control in your engine bay isn't blown. Then make sure the two connectors next to the battery that the EFI harness connects to are okay. If all of that is fine, then you might be hunting a harness gremlin.

The next step of the FSM after you ensure battery voltage exists is to check continuity from the ECU to the injectors, which you've done.

If you're getting spark, that tells me the CPS didn't come unplugged after you corrected it.

Good luck!


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