AEM EMS4 Can't get my car started!!!! - Miata Turbo Forum - Boost cars, acquire cats.

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Old 04-06-2013, 03:25 AM   #1
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Default AEM EMS4 Can't get my car started!!!!

Hello I got a 91 miata who I've just finished boosting, got all the wiring in for the ems. I've tried to crank to start but nothing then I was told I must sync timing with ecu first so I was told to unplug injectors/coils/pump ext. so it wouldn't start now I'm stuck on the syncing part all I read or see videos of is people syncing timing, BUT while their car is on! That's my problem my car won't start theirs spark, fuel phasing I've syncd my injectors, everything and anything I could think of is or has been set up in the sensor wizards, but how exactly do you sync timing when car wont start? Please shine some light, these past days have been sooo hectic. /:
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Old 04-09-2013, 04:07 PM   #2
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Can you post your map, or at least a screen shot with the start up parameters.
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Old 04-09-2013, 04:21 PM   #3
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I don't remember syncing timing with the ecu. I remember cranking with the cas unplugged to build oil pressure, plugging the cat back in and starting it. Well more like trying to start it a bunch and fiddling with the the tune until it would stay running.
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Old 04-10-2013, 12:23 AM   #4
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Can you post your map, or at least a screen shot with the start up parameters.
.
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Old 04-10-2013, 12:26 AM   #5
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Can you post your map. OR at least a screen shot with the start up parameters.
Not a screen shot of your fuel map with no reference and the timing table.
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Old 04-10-2013, 12:27 AM   #6
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Another.
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Old 04-10-2013, 12:31 AM   #7
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Can you click on the tab that says startup and screen cap that?
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Old 04-10-2013, 12:35 AM   #8
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Can you click on the tab that says startup and screen cap that?
My bad took two of the fuel instead of the start. Give me a minute.
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Old 04-10-2013, 11:04 AM   #9
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Just post your cal.
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Old 04-10-2013, 09:26 PM   #10
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I just went through the whole install myself. You first need to make sure that when you crank it with no fuel and spark, Stat sync'ed is ON in the advanced pickups tab. That means it's picking up your crank and cam.

Then you need to sync the timing with the ECU. Connect the ignition but not the fuel. Open up the ignition sync wizard and lock the timing at 10 BTDC. You need a friend to crank, or get one of those remote starters like I did and crank it with a timing light. Then you need to get it to 10BTDC on the crankshaft marks (I dont know how the timing marks look on the 1.6). Press retard or advance until the marks all line up good.

You also need to make sure your ignition and injector phasing are set up properly.
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Old 04-10-2013, 10:34 PM   #11
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Here's the start tab.
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Old 04-10-2013, 10:45 PM   #12
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You also need to make sure your ignition and injector phasing are set up properly.
Would you happen to have a shot of your injector and ignition phasing or what it is set at. What motor do you have. To get an idea. Cause I have a set up that aem sent me, but it may be wrong.
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Old 04-10-2013, 11:18 PM   #13
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Would you happen to have a shot of your injector and ignition phasing or what it is set at. What motor do you have. To get an idea. Cause I have a set up that aem sent me, but it may be wrong.
Mine will be unhelpful because I have a 36-1 crank wheel so my phasing is not even close to yours. But you'll probably have 8 total teeth so something like

Coil 1: 0
Coil 1b: 4
Coil 2: 6
Coil 2b: 2

I think...
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Old 04-10-2013, 11:37 PM   #14
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Mine will be unhelpful because I have a 36-1 crank wheel so my phasing is not even close to yours. But you'll probably have 8 total teeth so something like

Coil 1: 0
Coil 1b: 4
Coil 2: 6
Coil 2b: 2

I think...
I actually have a 24-1 wheel that I recieved from aem, if this information is helpful?
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Old 04-12-2013, 01:34 AM   #15
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So I've got my timing syncd and locked at 10 finally, I simply switched my cam and crank cables at ecu harness went retard on timing acouple times and that worked dont know why I didn't try that sooner. But anyways once timing was syncd I went through all the steps again setting up coils with cylinders ext. but when it came to cranking it nothing! I checked for spark at plugs and theirs spark! I checked that the fuel pump is pumping fuel and it's a walbro so trust me it's pumping! Now when I removed spark plugs to see if my injectors were spraying only cylinder 4 spark plug looked like it was being sparked (burnt at tip of spark plug) maybe my injectors are bad or just setup wrong? Any help guys?!!?!
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Old 04-14-2013, 11:26 AM   #16
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So I've got my timing syncd and locked at 10 finally, I simply switched my cam and crank cables at ecu harness went retard on timing acouple times and that worked dont know why I didn't try that sooner. But anyways once timing was syncd I went through all the steps again setting up coils with cylinders ext. but when it came to cranking it nothing! I checked for spark at plugs and theirs spark! I checked that the fuel pump is pumping fuel and it's a walbro so trust me it's pumping! Now when I removed spark plugs to see if my injectors were spraying only cylinder 4 spark plug looked like it was being sparked (burnt at tip of spark plug) maybe my injectors are bad or just setup wrong? Any help guys?!!?!
Attached are screen shots for a 12+1 wheel. I am assuming you can adjust your numbers for the 24+1 using these as a a base, but not positive. Also, note coils here are set up sequential so you will need to turn on 1b and 2b instead of 3 and 4 for wasted spark.
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Old 04-17-2013, 10:12 PM   #17
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Attached are screen shots for a 12+1 wheel. I am assuming you can adjust your numbers for the 24+1 using these as a a base, but not positive. Also, note coils here are set up sequential so you will need to turn on 1b and 2b instead of 3 and 4 for wasted spark.
I plugged in the base map went over everything before cranking this time everything looks and seems right. But still no start car just keeps cranking theirs gas I've tested injectors theirs spark I've tested cables spark plugs are brand new, time is synced at this point I don't know what's going on.
Thanks anyway gthill13
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Old 04-17-2013, 10:13 PM   #18
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Is the fueling reasonable for the size of your injectors?
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Old 04-17-2013, 10:34 PM   #19
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Can you post your cal file?
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Old 04-25-2013, 01:05 AM   #20
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So I changed some settings and plugged these in as is, car started. Was on for a good 4 seconds then turned off/: any idea why or what I may have done wrong? Fuel was adjusted alittle because my wideband was reading lean, at first the car actually didnt wanna start then I played with the fuel like you said had acouple backfires then finally started, but again only for about 4-5seconds. Then shut off? Do I need to play with the MAF settings? It kinda felt like when you don't have your stock intake box connected (car turns on, then turns off after acouple seconds)
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