TCB91SX Posted May 21, 2023 Report Share Posted May 21, 2023 Hello, Looking to see if someone can check my parameters and see if they notice anything amiss. The car will crank but will not fire. Coils fire when performing ignition test. Injectors fire when performing injector test. Details: - SR20DET Redtop -Wiring Specialties Harness -Link G4X plug in ECU Thank you for looking and any comments. Tom - Base Map.pclx PC Datalog - 2023-05-21 4;49;53 pm.llgx Quote Link to comment Share on other sites More sharing options...
Adamw Posted May 21, 2023 Report Share Posted May 21, 2023 You have no RPM when cranking, so its not happy with the trigger. You can do a trigger scope while cranking to confirm but my first thought would be most likely the ADM/JDM dip switch is set to the incorrect option. Once you have RPM working then you will need to set base timing, try the offset around -100 as a starting point. Quote Link to comment Share on other sites More sharing options...
TCB91SX Posted May 22, 2023 Author Report Share Posted May 22, 2023 How do I know which switch to set it to ? Any harm but swapping it and seeing what happens ? It is currently set to JDM NZ. Triggerscope attached. TriggerScopeLog Tb.llgx Quote Link to comment Share on other sites More sharing options...
Vaughan Posted May 22, 2023 Report Share Posted May 22, 2023 That's not a factory trigger disc, looks like an AEM one or similar, 24 teeth no gap on Trigger 1 and 1 tooth on Trigger 2. You'll need to change trigger setup something like the below and you will have to use a timing light to figure out the correct offsetde to multitooth with Quote Link to comment Share on other sites More sharing options...
TCB91SX Posted May 22, 2023 Author Report Share Posted May 22, 2023 Adam/Vaughn, thank you. Photo of trigger disc attached. Quote Link to comment Share on other sites More sharing options...
TCB91SX Posted May 22, 2023 Author Report Share Posted May 22, 2023 Swapped the dip switches but still no RPM when cranking. Log/Trigger scope attached. TriggerScopeLog - ADM Switch.llgx PC Datalog - 2023-05-21 7;57;20 pm - ADM.llgx Quote Link to comment Share on other sites More sharing options...
Adamw Posted May 22, 2023 Report Share Posted May 22, 2023 Check Vaughan's last post, your dip switches were already ok, it just has an aftermarket trigger wheel. Set your triggers up as per his pictures. Quote Link to comment Share on other sites More sharing options...
TCB91SX Posted May 22, 2023 Author Report Share Posted May 22, 2023 Got it, another crank with the dip switches back to JDM. Still not seeing RPM. Can you point me in the direction of the next item to assess ? PC Datalog - 2023-05-21 8;20;26 pm - JDM Switch.llgx Quote Link to comment Share on other sites More sharing options...
Vaughan Posted May 22, 2023 Report Share Posted May 22, 2023 Did you put the cover back on and plug it back in? that log shows no signals at all Quote Link to comment Share on other sites More sharing options...
TCB91SX Posted May 22, 2023 Author Report Share Posted May 22, 2023 Yes, The last log was an attempt to crank with fuel turned off. Quote Link to comment Share on other sites More sharing options...
Vaughan Posted May 22, 2023 Report Share Posted May 22, 2023 Grab another triggerscope to see what it is doing please Quote Link to comment Share on other sites More sharing options...
TCB91SX Posted May 22, 2023 Author Report Share Posted May 22, 2023 Triggerscope log attached TriggerScopeLog - JDM Switch.llgx Quote Link to comment Share on other sites More sharing options...
Vaughan Posted May 22, 2023 Report Share Posted May 22, 2023 No signal at all, something isn't plugged in right Quote Link to comment Share on other sites More sharing options...
TCB91SX Posted May 22, 2023 Author Report Share Posted May 22, 2023 You're correct, I unplugged the CAS when pulling the cover. Plugged back in and captured another trigger scope TriggerScopeLog - New.llgx RPM/Signal showed up. So to take base timing, I will need to start the car hopefully at the -100 offset then adjust from there with timing light ? PC Datalog - 2023-05-21 8;50;21 pm - CAS Plug in.llgx Quote Link to comment Share on other sites More sharing options...
koracing Posted May 22, 2023 Report Share Posted May 22, 2023 Yeah try the offset suggested, and then you can either start the car, or insert a spark plug wire between cylinder 1 coil and the spark plug, attach the inductive clamp from a timing light to it, and then open the trigger calibration window in the software to fix the timing and then crank and see if you can match up the timing there. Be sure to hit enter after changing any values in the trigger calibration window or it won't actually make the changes. Quote Link to comment Share on other sites More sharing options...
TCB91SX Posted May 23, 2023 Author Report Share Posted May 23, 2023 1st time trying to start since the change in settings. Car acted like it wanted to fire then would crank. Log attached. PC Datalog - 2023-05-22 6;31;51 pm.llgx Quote Link to comment Share on other sites More sharing options...
TCB91SX Posted May 23, 2023 Author Report Share Posted May 23, 2023 Hold, line from pump to hanger exploded somehow… Quote Link to comment Share on other sites More sharing options...
TCB91SX Posted May 23, 2023 Author Report Share Posted May 23, 2023 Fixed the fuel and got it to fire. First fired around -85 and so I worked my way down from there and ended up around -40. At -40 it will idle decent but I have to slightly depress the gas pedal this would make me think that I would need to adjust the master fuel setting. Anyone have input on master fuel setting for DW 740cc injectors ? Should I keep working my timing offset down until I can get a timing light on it ? Thanks everyone!!! Quote Link to comment Share on other sites More sharing options...
Vaughan Posted May 23, 2023 Report Share Posted May 23, 2023 1 hour ago, TCB91SX said: 1st time trying to start since the change in settings. Car acted like it wanted to fire then would crank. Log attached. Triggers, spark and fuel working, get a timing light on it and set the offset Quote Link to comment Share on other sites More sharing options...
koracing Posted May 23, 2023 Report Share Posted May 23, 2023 1 hour ago, TCB91SX said: Fixed the fuel and got it to fire. First fired around -85 and so I worked my way down from there and ended up around -40. At -40 it will idle decent but I have to slightly depress the gas pedal this would make me think that I would need to adjust the master fuel setting. Anyone have input on master fuel setting for DW 740cc injectors ? Should I keep working my timing offset down until I can get a timing light on it ? Thanks everyone!!! Are you arbitrarily changing the offset without using a timing light? Tuning it by "ear"? Not using the wideband to correct fuel? What decade is this? Quote Link to comment Share on other sites More sharing options...
TCB91SX Posted May 23, 2023 Author Report Share Posted May 23, 2023 8 hours ago, koracing said: Are you arbitrarily changing the offset without using a timing light? Tuning it by "ear"? Not using the wideband to correct fuel? What decade is this? I did so to get the car running then I can throw my timing light on it. I do also have a wideband set up which will be used to correct fuel... If you have a better recommendation for getting the car started or how to manipulate the offset prior to start I am open to listening. Quote Link to comment Share on other sites More sharing options...
koracing Posted May 23, 2023 Report Share Posted May 23, 2023 Disable injectors - hook up timing light to a spark plug cable between the coil and the plug. Pull all plugs but cylinder 1. Spin motor and see where the timing mark is (this would require a helper or a way to engage the starter from the engine bay). Adjust offset until it syncs up. Reinstall everything and re-enable the injectors. Fire the in the hole - you'll be either right on or need to subtract/add 360 to the offset. Quote Link to comment Share on other sites More sharing options...
TCB91SX Posted May 23, 2023 Author Report Share Posted May 23, 2023 Kris, Thank you for the information, super appreciate it! Quote Link to comment Share on other sites More sharing options...
spliffgates Posted May 29, 2023 Report Share Posted May 29, 2023 I had a very similar chain of events happen to me today. Replacing the fuel pump and line that exploded tomorrow. In the meantime I want to configure a base map to get by with until I can have it tuned. I also have the same 740cc injectors and currently have MAF which I’m hoping to swap to MAP soon. Could you share your tune file so I can have a good starting point or point me in the right direction on settings to apply? Quote Link to comment Share on other sites More sharing options...
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