redtop: no spark, no start

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foCk
Posts: 176
Joined: Thu Aug 05, 2004 7:43 pm

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Here's where I stand with my S13 SR -> 89 240SX swap:

-I've got no spark (stuck a screwdriver in the coilpack and sat it close to the intake manifold)-The original ignitor was bad so I got a Q45 one to replace it which tested good according to the S14 FSM-The ecu came from a running stockish SR but has a daughterboard in it. Diagnostic LED on this ECU says on all the time no matter what.-My coilpacks are good (tested according to 180fan -My cas is good (I pulled it out, spun it and could hear the fuel injectors clicking)-I've got fuel (wet spark plugs)-I've reset base timing multiple times according to the S14 FSM but for some reason I feel like its 180 degrees out

Please give me some ideas on how to figure out my no spark, no start situation

Also if anyone has the S13 FSM or S13 engine wiring diagram i'd love to get a copy


Blown240sx
Posts: 1963
Joined: Thu Apr 21, 2005 3:20 pm
Car: 1996 240sx

Post

Test to see fi you have volts coming off the ignitor even though you say it tested good. It has to be between the ignitor to the plugs.

foCk
Posts: 176
Joined: Thu Aug 05, 2004 7:43 pm

Post

All these test were done by hooking up my spare CAS and turning it by hand.:Voltage at coilpacks - none (~17mV)Voltage at ignitor - mabye (~17mV spiking to ~150mV)

I tested the wiring between the ignitor and the coilpacks and it is perfect however when I tested between the ecu and ignitor I found that all the wires are connected together and also go to ground. Should these wires go like the FSM shows, 4 individual wires never connecting and never going to ground? I'm going to go and tear apart the harness to see if I can find any issues


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