36-1 Duratec MIsfire issues | AEM
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ssao1
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Last seen: 5 months 5 days ago
Joined: 07/13/2017 - 14:27
36-1 Duratec MIsfire issues

Hey guys. Im a little stumpped with converting the Super7 to the EMS-4 and any help I can get would be greatly appreciated. My current set up is below:

 

Duratec 2.0 // 36-1 Crank wheel w/ VR sensor and VR cam sensor// COP// ITB's

 

I assume the firing order is 1-3-4-2. I know my INJ phase and  COIL phase should be 0-18-6-12, but the engine doesn't run with this configuration. 

The engine does run with the INJ 6-12-18-0 & COIL 0-18-12-6. ALL injector lights are flashing with an injector noid and Im seeing spark from all 4 coils.

Currently cylinder 1 and 2 runs, however cylinder 3 and 4 has a misfire. When I deactivate INJ #3 and #4, the engine condition doesn't change. However, when I deactivate COIL #3 and #4, this would cause a stumble in the engine. No condition change when I physically swap out the INJ 2 with INJ 3, and Cylinder 3 still doesnt fire corretly.

Attached is my current califbration: if I change the INJ and the COIL phasing to any other configuration, the engine won't run.

Lotus Super7 Project1.AEM20.01V24.cal

i know everyone is super busy with their own cars/ projects, so I understand I know how much, attending to the forum, can be time consuming. However I greatly appreciate any suggestion or help, 

AEM_NS
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Last seen: 35 min 59 sec ago
Joined: 06/06/2014 - 09:31
The coil phasing has to

The coil phasing has to follow how the coils were wired. Did you wire the coils in cylinder order (1 to 1, 2 to 2, 3 to 3, 4 to 4) or in firing order (1 to 1, 2 to 3, 3 to 4, 4 to 2)? Injector phasing setup is much less critical and the engine will pretty much run the same regardless of injector timing so this is definitely more of an ignition phase problem than injection.

ssao1
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Last seen: 5 months 5 days ago
Joined: 07/13/2017 - 14:27
Thanks NS!

Thanks NS!

After the suggestion, I found the mis wiring of the coil driver. Now, the coils to the ecu is 1to1, 2to2, 3to3, and 4to4. The engine wants to start, but it doesn't, Im not sure why... In the CAL, you will notice I have changed the COIL/ INJ phasing to 0-18-6-12, but still no go.  But I do get flashing lights on my INJ Noid and spark at my coil.

Lotus Super7 Project1.AEM20.01V24.cal

I do have a question though: are the CAM MAG and CRK MAG setting in Adv Pick Up supposed to be Falling Edge? I have changed it around a few times, but no go as well.

AEM_NS
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Last seen: 35 min 59 sec ago
Joined: 06/06/2014 - 09:31
It'd be a good idea to read

It'd be a good idea to read through the PDFs in the EMS-4 DIY/FAQ thread if you haven't already. The raw VR signal must be rising edge but the trigger selection in the software is set to falling. This is because there is a VR translator chip that inverts the signal so a rising VR trigger generates a falling edge signal to the processor. Have you synced your timing? You can't just go back and forth between trigger edges without resyncing your timing.

ssao1
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Last seen: 5 months 5 days ago
Joined: 07/13/2017 - 14:27
After much reading and

After much reading and setting the engine Timing Sync  per AEM pdf, engine runs on all 4's!

BIG thanks shoutout  to Lawrence and NS! 

Olas
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Last seen: 2 years 6 months ago
Joined: 10/25/2017 - 13:35
I also have a duratec and

I also have a duratec and have weird spark issues. My timing light flashes at random during crank. I have the coil driver as well and COP. They are wired 1to1, 2to2, 3to3, 4to4 as well. I am using a 12 tooth even spaced trigger wheel also both VR sensors and a single tooth cam. Im really lost at this point. It seems like the Timing light will give a rapid succession flashes at random. I have replaced my Coils once to make sure they are all good. Also using 0-18-6-12. I have double checked my wiring but i guess a 3rd time wont hurt.